Los Angeles, CA: Lumbar Anterior Spinal Fusion Surgery Cost Comparison

Lumbar Anterior Spinal Fusion Surgery Cost Report - Los Angeles, CA


$28,500
$46,400
$78,400
Get a Free Price Quote >>

Lumbar Anterior Spinal Fusion Surgery Cost Report in Los Angeles, CA Summary

A Lumbar Anterior Spinal Fusion Surgery costs $46,309 in Los Angeles when you take the median price of the 330 medical providers who perform Lumbar Anterior Spinal Fusion Surgery procedures in the Los Angeles, CA area. As a healthcare consumer you should understand that prices of medical procedures vary and if you shop from the Los Angeles providers below you may be able to save money. Shop around by requesting a free quote from New Choice Health and start saving!

Certified Provider NewChoiceHealth Certified Providers
Partner Logo
Patient Assist - Medical Procedure Assistance
Certified Provider
NewChoiceHealth
Accredited Provider
NewChoiceHealth
2 facilities in Los Angeles. Request a Free Quote!

Price Range:
$17,800 - $55,900

Compare Lumbar Anterior Spinal Fusion Surgery Providers in Los Angeles, CA

Facility Name City Price Range
Arcadia Outpatient Surgery Center Arcadia $17,800 - $55,900
Barranca Surgical Center Irvine $17,800 - $55,900
Santa Monica - Ucla Med Ctr and Orthopaedic Hospital Santa Monica $34,200 - $107,200
Newport Center for Special Surgery Newport Beach $17,800 - $55,900
University of Southern California/Norris Comprehensize Care Los Angeles $34,200 - $107,200
Garfield Medical Center Monterey Park $34,200 - $107,200
Suburban Medical Center Paramount $34,200 - $107,200
Oc Regional Surgical Center Orange $17,800 - $55,900
Almont Ambulatory Surgery Center Beverly Hills $17,800 - $55,900
Sunflower Surgical Institute Costa Mesa $17,800 - $55,900
Orange County Global Medical Center Santa Ana $34,200 - $107,200
Long Beach Surgical Institute Long Beach $17,800 - $55,900
Buena Vista Surgery Center Burbank $17,800 - $55,900
Starpoint Health Irvine $17,800 - $55,900
Roxbury Surgery Center Beverly Hills $17,800 - $55,900
Antelope Valley Surgical Institute Lancaster $17,800 - $55,900
Henry Mayo Newhall Hospital Valencia $34,200 - $107,200
East Los Angeles Doctors Hospital Los Angeles $34,200 - $107,200
Los Angeles Surgical Center Los Angeles $17,800 - $55,900
Providence St. Jude Medical Center Fullerton $34,200 - $107,200
Time Surgical Facility Santa Ana $17,800 - $55,900
West Coast Surgery Center Los Alamitos $17,800 - $55,900
Monterey Park Outpatient Surgery Center Monterey Park $17,800 - $55,900
Memorialcare Long Beach Medical Center Long Beach $34,200 - $107,200
Pacifica Outpatient Surgery Center Huntington Beach $17,800 - $55,900
Newport Plaza Surgery Center Costa Mesa $17,800 - $55,900
Rinaldi Surgery Center Mission Hills $17,800 - $55,900
Memorialcare Surgical Center at Saddleback Laguna Hills $17,800 - $55,900
LA Palma Intercommunity Hospital La Palma $34,200 - $107,200
Newport Beach Surgery Center Newport Beach $17,800 - $55,900
Culver City Surgical Center Culver City $17,800 - $55,900
University of California Irvine Medical Center Orange $34,200 - $107,200
Imagebased Surgicenter Corporation Santa Monica $17,800 - $55,900
Pacifica Hospital of the Valley Sun Valley $34,200 - $107,200
Westwood Surgery Center Los Angeles $17,800 - $55,900
Glendora Surgery Center Glendora $17,800 - $55,900
Providence Little CO of Mary Med Ctr San Pedro San Pedro $34,200 - $107,200
Foothill Surgery Center Arcadia $17,800 - $55,900
Torrance Memorial Medical Center Torrance $34,200 - $107,200
Hallmark Surgical Center of Northridge Northridge $17,800 - $55,900
Encino-tarzana Regional Medical Center - Tarzana Tarzana $34,200 - $107,200
Irvine Multi Specialty Surgical Care Irvine $17,800 - $55,900
Century City Doctors Hospital Los Angeles $34,200 - $107,200
Wardlow Surgery Center Long Beach $17,800 - $55,900
Pacific Alliance Medical Center Los Angeles $34,200 - $107,200
Four Seasons Surgery Centers of Encino Encino $17,800 - $55,900
Greater El Monte Community Hospital South El Monte $34,200 - $107,200
Hoag Memorial Hospital Presbyterian Newport Beach $34,200 - $107,200
Kaiser Foundation Hospital - Woodland Hills Woodland Hills $34,200 - $107,200
Surgical Institute of Garden Grove Garden Grove $17,800 - $55,900
Nova Surgicenter Beverly Hills $17,800 - $55,900
Regency Surgery Center Encino $17,800 - $55,900
Whittier Hospital Medical Center Whittier $34,200 - $107,200
Brand Surgical Institute Glendale $17,800 - $55,900
Orangewood Surgical Center Orange $17,800 - $55,900
Oak Tree ASC Pasadena $17,800 - $55,900
Four Seasons Surgery Centers of Anaheim Anaheim $17,800 - $55,900
Reagan Street Surgery Center Los Alamitos $17,800 - $55,900
Valley Presbyterian Hospital Van Nuys $34,200 - $107,200
Kaiser Foundation Hospital - Baldwin Park Baldwin Park $34,200 - $107,200
Lac/Olive View - Ucla Medical Center Sylmar $34,200 - $107,200
Cedars - Sinai Medical Center Los Angeles $34,200 - $107,200
West Hills Surgical Center West Hills $17,800 - $55,900
20th Street Surgery Center Santa Monica $17,800 - $55,900
California Surgical Institute Brea $17,800 - $55,900
Huntington Beach Hospital Huntington Beach $34,200 - $107,200
Kaiser Foundation Hospital - Panorama City Panorama City $34,200 - $107,200
Los Alamitos Medical Center Los Alamitos $34,200 - $107,200
Alhambra Hospital Medical Center Alhambra $34,200 - $107,200
College Hospital Costa Mesa Costa Mesa $34,200 - $107,200
Whittier Outpatient Surgery Center Whittier $17,800 - $55,900
Birch Outpatient Surgery Center Newport Beach $17,800 - $55,900
Sherman Oaks Surgery Center Sherman Oaks $17,800 - $55,900
Kaiser Foundation Hospital - Orange County - Anaheim Anaheim $34,200 - $107,200
Peninsula Outpatient Surgery Center San Pedro $17,800 - $55,900
West Coast Center for Surgeries San Clemente $17,800 - $55,900
Los Angeles Community Hospital Los Angeles $34,200 - $107,200
Linden Crest Surgery Center Beverly Hills $17,800 - $55,900
Vista Surgical Center Orange $17,800 - $55,900
Directed Interventional Surgery Center Santa Monica $17,800 - $55,900
Sph Irvine Irvine $17,800 - $55,900
Lasky Clinic Surgical Center Beverly Hills $17,800 - $55,900
Memorialcare Orange Coast Medical Center Fountain Valley $34,200 - $107,200
USA Advanced Care Surgical Center Los Angeles $17,800 - $55,900
Pasadena Surgery Center Pasadena $17,800 - $55,900
Foothill Ranch Surgi-center Foothill Ranch $17,800 - $55,900
Oasis Surgery Center Palmdale $17,800 - $55,900
WMG Procedure Center Los Angeles $17,800 - $55,900
Oceanview Ambulatory Surgery Center Laguna Beach $17,800 - $55,900
Third Street Surgery Center Los Angeles $17,800 - $55,900
Laguna Niguel Surgery Center Laguna Niguel $17,800 - $55,900
Community Hospital of Huntington Park Huntington Park $34,200 - $107,200
City of Hope National Medical Center Duarte $34,200 - $107,200
Mesa Surgicenter Fullerton $17,800 - $55,900
West Anaheim Medical Center Anaheim $34,200 - $107,200
Southern California Surgery Center Huntington Park $17,800 - $55,900
Burbank Outpatient Surgery Center Burbank $17,800 - $55,900
City of Angels Medical Center - Downtown Campus Los Angeles $34,200 - $107,200
Procedure Center of Irvine Irvine $17,800 - $55,900
Pih Health Downey Hospital Downey $34,200 - $107,200
Specialty Surgical Center of Irvine Irvine $17,800 - $55,900
Pacific Coast Surgical Center Torrance $17,800 - $55,900
Downey Surgery Center Downey $17,800 - $55,900
Ahmc Anaheim Regional Medical Center Anaheim $34,200 - $107,200
Hoag Outpatient Surgery Center Newport Beach $17,800 - $55,900
South Bay Surgical and Spine Institute Long Beach $17,800 - $55,900
South Gate Ambulatory Surgical Center South Gate $17,800 - $55,900
Temple Community Hospital Los Angeles $34,200 - $107,200
Surgery Center of the Pacific Santa Monica $17,800 - $55,900
Garden Grove Outpatient Surgery Center Garden Grove $17,800 - $55,900
Main Street Specialty Surgery Center Orange $17,800 - $55,900
Ronald Reagan Ucla Medical Center Los Angeles $34,200 - $107,200
M/S Surgery Center Lynwood $17,800 - $55,900
Tarzana Surgery Center Tarzana $17,800 - $55,900
Parkside Surgical Institute Santa Monica $17,800 - $55,900
Pacific Endoscopy and Surgery Center Fountain Valley $17,800 - $55,900
North Anaheim Surgicenter Anaheim $17,800 - $55,900
Los Angeles General Medical Center Los Angeles $34,200 - $107,200
Euclid Outpatient Surgery Center Fountain Valley $17,800 - $55,900
Centinela Hospital Medical Center Inglewood $34,200 - $107,200
The Advanced Surgical Institute Huntington Beach $17,800 - $55,900
Advanced Diagnostic and Surgical Center Alhambra $17,800 - $55,900
Antelope Valley Surgery Center Lancaster $17,800 - $55,900
Fullerton Surgical Center Fullerton $17,800 - $55,900
Msnbz Surgical Center Beverly Hills $17,800 - $55,900
Bolsa Outpatient Surgery Westminster $17,800 - $55,900
Camden Surgery Center Beverly Hills $17,800 - $55,900
Palmdale Lancaster Surgery Center Lancaster $17,800 - $55,900
Sunset Surgical Center West Covina $17,800 - $55,900
Los Alamitos Surgery Center Los Alamitos $17,800 - $55,900
Pasadena Advanced Surgery Institute Pasadena $17,800 - $55,900
La/oc Surgical Center Redondo Beach $17,800 - $55,900
MD Surgical Solutions Sherman Oaks $17,800 - $55,900
Olympia Medical Center Los Angeles $34,200 - $107,200
Specialty Surgical Center of Thousand Oaks Beverly Hills $17,800 - $55,900
Fountain Valley Regional Hospital and Medical Center Fountain Valley $34,200 - $107,200
Placentia Linda Hospital Placentia $34,200 - $107,200
Palmdale Regional Medical Center Lancaster $34,200 - $107,200
Tower Outpatient Surgey Center Los Angeles $17,800 - $55,900
Manchester Surgical Pavillion Orange $17,800 - $55,900
Pacific Hills Surgery Center Laguna Hills $17,800 - $55,900
Brentwood Surgery Center Los Angeles $17,800 - $55,900
Mid-wilshire Surgery Center Los Angeles $17,800 - $55,900
East Valley Hospital Medical Center Glendora $34,200 - $107,200
Spalding Outpatient Surgery Center Beverly Hills $17,800 - $55,900
Memorialcare Saddleback Medical Center Laguna Hills $34,200 - $107,200
Anaheim Global Medical Center Anaheim $34,200 - $107,200
Newport Bluffs Surgery Center Newport Beach $17,800 - $55,900
Surgery Center of Long Beach Long Beach $17,800 - $55,900
Foothill Ranch Surgery and Medical Center Foothill Ranch $17,800 - $55,900
West Coast Outpatient Surgery Center Garden Grove $17,800 - $55,900
Newport Avenue Surgery Institute Tustin $17,800 - $55,900
Keck Hospital of Usc Los Angeles $34,200 - $107,200
Huntington Hospital Pasadena $34,200 - $107,200
Valley Ambulatory Surgery Center Van Nuys $17,800 - $55,900
Pacific Coast Ambulatory Surgicenter San Clemente $17,800 - $55,900
Kaiser Foundation Hospital - Los Angeles Los Angeles $34,200 - $107,200
Garden Grove Hospital and Medical Center Garden Grove $34,200 - $107,200
Valley Surgicenter Northridge $17,800 - $55,900
Valencia Outpatient Surgical Center Santa Clarita $17,800 - $55,900
Broadway Surgical Institute Santa Monica $17,800 - $55,900
Kaiser Foundation Hospital - Downey Bellflower $34,200 - $107,200
Tustin Hospital and Medical Center Tustin $34,200 - $107,200
Anaheim Surgicenter Anaheim $17,800 - $55,900
Serra Community Medical Clinic Surgery Center Sun Valley $17,800 - $55,900
Providence Holy Cross Surgery Center Mission Hills $17,800 - $55,900
Northridge Hospital Medical Center Northridge $34,200 - $107,200
Miracle Mile Medical Center Los Angeles $34,200 - $107,200
San Gabriel Ambulatory Surgery Center San Gabriel $17,800 - $55,900
Santa Monica Surgical Center Santa Monica $17,800 - $55,900
Azusa Surgery Center Azusa $17,800 - $55,900
North Orange County Surgery Center Anaheim $17,800 - $55,900
South Bay Surgery Center Hermosa Beach $17,800 - $55,900
Century Surgery Los Angeles $17,800 - $55,900
Sherman Oaks Hospital Sherman Oaks $34,200 - $107,200
Lakeside Surgery Center Glendale $17,800 - $55,900
Encino Hospital Medical Center Encino $34,200 - $107,200
Providence Saint Joseph Medical Ctr Burbank $34,200 - $107,200
Westside Medical Center Los Angeles $17,800 - $55,900
Beverly Hospital Montebello $34,200 - $107,200
Community Hospital of Long Beach Long Beach $34,200 - $107,200
Sampson Medical Corporation Montebello $17,800 - $55,900
Surgicare of La Veta Orange $17,800 - $55,900
Del Rey Surgery Center Marina Del Rey $17,800 - $55,900
South Coast Medical Center Laguna Beach $34,200 - $107,200
Mission Community Hospital Panorama City $34,200 - $107,200
Daniel Freeman Memorial Hospital Inglewood $34,200 - $107,200
St Mary Medical Center Long Beach $34,200 - $107,200
Providence Mission Hospital Mission Viejo $34,200 - $107,200
Torrance Surgery Center Torrance $17,800 - $55,900
Glendale Outpatient Surgery Center Glendale $17,800 - $55,900
Magnolia Surgery Center Westminster $17,800 - $55,900
Coast Surgery Center Torrance $17,800 - $55,900
Diamond Bar Surgery Center Diamond Bar $17,800 - $55,900
Valencia Surgical Center Valencia $17,800 - $55,900
Newport Centre Outpatient Surgery Facilities Newport Beach $17,800 - $55,900
Top Surgeons West Hills $17,800 - $55,900
California Specialty Surgery Cneter Mission Viejo $17,800 - $55,900
Pacific Ambulatory Surgical Center Encino $17,800 - $55,900
Providence Holy Cross Medical Center Mission Hills $34,200 - $107,200
The Oc Surgery Center Santa Ana $17,800 - $55,900
Pih Health Hospital - Whittier Whittier $34,200 - $107,200
Laguna Hills Surgery Center Laguna Woods $17,800 - $55,900
Venice Beach Surgical Center Los Angeles $17,800 - $55,900
California Surgery Center West Hills $17,800 - $55,900
Plaza Surgical Medical Center Monterey Park $17,800 - $55,900
Community Hospital of Gardena Gardena $34,200 - $107,200
Oakpark Surgery Center Pasadena $17,800 - $55,900
Kaiser Foundation Hospital - South Bay Harbor City $34,200 - $107,200
Huntington Surgery Center Huntington Beach $17,800 - $55,900
Boulevard Surgicenter Encino $17,800 - $55,900
2001 Surgery Center Santa Monica $17,800 - $55,900
Global Care Surgery Center Westminster $17,800 - $55,900
Mile Square Surgery Center Fountain Valley $17,800 - $55,900
Brea Surgical Center Brea $17,800 - $55,900
Sunset Ambulatory Surgical Center Los Angeles $17,800 - $55,900
Newport Coast Surgery Center Newport Beach $17,800 - $55,900
Wilshire Surgicenter Beverly Hills $17,800 - $55,900
Monterey Park Hospital Monterey Park $34,200 - $107,200
West Covina Medical Center West Covina $34,200 - $107,200
Regional Valley Surgery Center Lancaster $17,800 - $55,900
Downtown La Ambulatory Surgical Center Los Angeles $17,800 - $55,900
Pacific Surgery Center of Santa Monica Santa Monica $17,800 - $55,900
Brotman Medical Center Culver City $34,200 - $107,200
Madison 101 Pasadena Surgery Center Pasadena $17,800 - $55,900
Orthopaedic Hospital Los Angeles $34,200 - $107,200
Emanate Health Foothill Presbyterian Hospital Glendora $34,200 - $107,200
Coastal Surgery Center Huntington Beach $17,800 - $55,900
Chevy Chase Ambulatory Center Glendale $17,800 - $55,900
Coast Plaza Doctors Hospital Norwalk $34,200 - $107,200
Ocean Surgicenter Santa Monica $17,800 - $55,900
Pacific Surgery Center Burbank $17,800 - $55,900
Emanate Health Inter - Community Hospital Covina $34,200 - $107,200
Studio City Surgical Center Studio City $17,800 - $55,900
Pacific Hospital of Long Beach Long Beach $34,200 - $107,200
Center for Outpatient Surgery Whittier $17,800 - $55,900
Mission Surgery Center Mission Viejo $17,800 - $55,900
Doctors Surgery Center Fountain Valley $17,800 - $55,900
Ocean Park Surgical Center Venice $17,800 - $55,900
Mazzocco Ambulatory Surgical Center Van Nuys $17,800 - $55,900
Advanced Surgical Partners Costa Mesa $17,800 - $55,900
Antelope Valley Hospital Lancaster $34,200 - $107,200
Newport Crest Surgical Center Newport Beach $17,800 - $55,900
Torrance Outpatient Surgery Center Torrance $17,800 - $55,900
Ocean Park Health Surgery Center Los Angeles $17,800 - $55,900
Memorial Hospital of Gardena Gardena $34,200 - $107,200
Anaheim General Hospital Anaheim $34,200 - $107,200
Encino Surgical Medical Center Encino $17,800 - $55,900
Westminster Surgery Center Westminster $17,800 - $55,900
Cedar - Sinai Marina Del Rey Hospital Marina Del Rey $34,200 - $107,200
Ocean Surgey Center Torrance $17,800 - $55,900
Tri-city Regional Medical Center Hawaiian Gardens $34,200 - $107,200
Eden Surgical Center Calabasas $17,800 - $55,900
Newport Center Surgical Newport Beach $17,800 - $55,900
Comprehensive Ambulatory Surgical Medical Center El Monte $17,800 - $55,900
Kerlan-jobe Surgery Center Los Angeles $17,800 - $55,900
Huntington Outpatient Surgery Center Pasadena $17,800 - $55,900
Lakewood Regional Medical Center Lakewood $34,200 - $107,200
Hollywood Presbyterian Medical Center Los Angeles $34,200 - $107,200
International Surgical Institute Beverly Hills $17,800 - $55,900
Beverly Hills Surgery and Medical Center Lynwood $17,800 - $55,900
Downey Surgical Clinic Downey $17,800 - $55,900
Santa Ana Outpatient Surgery Center Santa Ana $17,800 - $55,900
Beverly Hills Canter for Arthroscopic and Outpatient Surgery Los Angeles $17,800 - $55,900
San Dimas Community Hospital San Dimas $34,200 - $107,200
Southern California Minimal Invasive Endoscopy and Surgery Long Beach $17,800 - $55,900
Motion Picture and Television Hospital Woodland Hills $34,200 - $107,200
Northridge Advanced Surgery Center Northridge $17,800 - $55,900
Usc Verdugo Hills Hospital Glendale $34,200 - $107,200
Glendale Mem Hospital and Hlth Center Glendale $34,200 - $107,200
Sherman Way Surgical Center Reseda $17,800 - $55,900
Pacific Ambulatory Surgery Center Alhambra $17,800 - $55,900
Saint Vincent Medical Center Los Angeles $34,200 - $107,200
2121 Surgery Center Santa Monica $17,800 - $55,900
Mosaics Surgery Center Huntington Beach $17,800 - $55,900
Pasadena Ambulatory Surgery Center Pasadena $17,800 - $55,900
Sharp Surgery Center Torrance $17,800 - $55,900
Valley Multi Specialty Surgery Center Reseda $17,800 - $55,900
Irvine Regional Hospital and Medical Center Irvine $34,200 - $107,200
Foothill Gateway Surgery Center Lake Forest $17,800 - $55,900
Crown Valley Surgery Center Mission Viejo $17,800 - $55,900
Glendale Adventist Medical Center Glendale $34,200 - $107,200
Westside Multispecialty Surgery Center Los Angeles $17,800 - $55,900
Casa Colina Surgery Center Pomona $17,800 - $55,900
Huntington Pointe Surgery Center Huntington Beach $17,800 - $55,900
Surgical Suite of Southern California Long Beach $17,800 - $55,900
Coastal Communities Hospital Santa Ana $34,200 - $107,200
Usc Arcadia Hospital Arcadia $34,200 - $107,200
La Peer Surgery Center Beverly Hills $17,800 - $55,900
Marina Outpatient Surgery Center Marina Del Rey $17,800 - $55,900
Four Seasons Surgery Centers of Huntington Beach Huntington Beach $17,800 - $55,900
Aalpha Surgical Center Culver City $17,800 - $55,900
Lido Surgical Institute Newport Beach $17,800 - $55,900
California Hospital Medical Center LA Los Angeles $34,200 - $107,200
Specialty Surgical Center, Arcadia Arcadia $17,800 - $55,900
Chapman Global Medical Center Orange $34,200 - $107,200
United Surgery Medical Center Montebello $17,800 - $55,900
Congress Medical Surgery Center Pasadena $17,800 - $55,900
Comprehensive Outpatient Surgery Center Beverly Hills $17,800 - $55,900
Hoag Hospital Newport Beach $17,800 - $55,900
Sunset Surgicenter Los Angeles $17,800 - $55,900
LE Surgical Los Angeles $17,800 - $55,900
Providence Little Company of Mary Med Ctr Torrance Torrance $34,200 - $107,200
Pih Health Good Samaritan Hospital Los Angeles $34,200 - $107,200
San Gabriel Valley Surgical Center West Covina $17,800 - $55,900
West Wilshire Medical Surgical Center Los Angeles $17,800 - $55,900
Saint Francis Medical Center Lynwood $34,200 - $107,200
Lac/Harbor - Ucla Med Center Torrance $34,200 - $107,200
Citrus Valley Medical Center - Queen of the Valley West Covina $34,200 - $107,200
Summit Surgical Center Beverly Hills $17,800 - $55,900
Avanguard Surgery Center Tarzana $17,800 - $55,900
Robertson Surgical Center Beverly Hills $17,800 - $55,900
San Gabriel Valley Medical Center San Gabriel $34,200 - $107,200
Pasadena Surgery Center Pasadena $17,800 - $55,900
Providence St. Joseph Hospital Orange $34,200 - $107,200
Southern California Hospital at Hollywood Hollywood $34,200 - $107,200
Newport Bay Surgery Center Newport Beach $17,800 - $55,900
Saddleback Memorial Medical Center - San Clemente San Clemente $34,200 - $107,200
Kaiser Foundation Hospital - West LA Los Angeles $34,200 - $107,200
The Beverly Hills Center for Special Surgery Los Angeles $17,800 - $55,900
Beach District Surgery Center Redondo Beach $17,800 - $55,900
The Center for Ambulatory Surgical Treatment Los Angeles $17,800 - $55,900
Saint John's Health Center Santa Monica $34,200 - $107,200
Charleville Surgicenter, A Medical Corp. Beverly Hills $17,800 - $55,900
Encino Place Surgery Center Encino $17,800 - $55,900
West Hills Hospital and Medical Center West Hills $34,200 - $107,200
State of the Art Surgery Center Los Angeles $17,800 - $55,900
Surgery Center of South Bay Torrance $17,800 - $55,900
Orange Coast Surgical Center Newport Beach $17,800 - $55,900
Pomona Valley Hospital Medical Center Pomona $34,200 - $107,200
Map

In the news

CNN Health The Seattle Times NPR