United Medical Doctors

What United Medical Doctors does

United Medical Doctors (UMD) is a privately held, physician-owned multi-specialty medical and surgical group headquartered in Murrieta, California, operating across four Southern California counties (Riverside, Orange, San Diego, and Los Angeles). The practice fields 250+ healthcare providers across 80+ clinical locations and 52 medical and surgical specialties, supplemented by 10 outpatient ambulatory surgery centers operated through its wholly owned United Surgery Centers (USC) division. Core service delivery is fee-for-service care billed to PPO, Medicare, Tricare, and select HMO payers, with insurance verification required before scheduling; revenue is generated through office visits, procedures, surgeries, diagnostic imaging, infusion, and laboratory services. Patient acquisition is primarily sales-led via physician-to-physician referrals, with supplemental digital channels including the practice website, Zocdoc-integrated online scheduling, Google Business listings, Yelp, email newsletters, and social media.

UMD's operating platform is organized around wholly owned subsidiaries and sub-brands that extend beyond direct patient care: United Surgery Centers (ASCs across nine SoCal cities), United Clinical Research (pharma-sponsored trials in gastroenterology, hepatology, and ENT, including the Roche SIBERITE-1 Crohn's Disease study), United Nursing College (pre-licensure ADN and RN-to-BSN programs in Murrieta), Trinity Health Academy (CNA and allied health courses), United Medical Fitness (physical therapy, weight loss, and metabolic services), and a network of specialty-branded clinical divisions (United GI, United Cardiology, United Orthopaedic Surgery, United Pain Center, United Imaging Centers, United Infusion Centers, United Lab, United Mental Wellness, and others). Technology consists of standard practice management tools: a HIPAA-compliant patient portal, telemedicine video visits, online scheduling through Zocdoc for eligible PPO/Medicare/Tricare patients, and Google Analytics for web traffic analysis.

Strategic positioning rests on three academic affiliations — UCSD Clinical Innovation Network and UCI Health — that provide university medical center access for research collaboration and training. In March 2026, UMD disclosed a data security event with unauthorized network access occurring between December 12, 2025 and March 31, 2026, a material operational and reputational exposure. The practice is privately held with no disclosed funding rounds, no institutional or PE ownership, and no M&A activity identified; ownership appears distributed among physician partners.

Name

United Medical Doctors

Legal name

United Medical Doctors

Website

https://unitedmd.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

101–250 employees

Short description

United Medical Doctors is a physician-owned, multi-specialty medical and surgical group in Southern California operating 250+ providers across 80+ locations and 10 ambulatory surgery centers, delivering 52 specialties plus clinical research, nursing education, and ancillary services.

Ownership category

akta.pro rank

Product category

Multi-specialty medical practice

NAICS

Offices of Physicians (62111), Ambulatory Health Care Services (621), Diagnostic Imaging Centers (621512)

SIC

Services-Offices & Clinics Of Doctors Of Medicine (8011), Services-Specialty Outpatient Facilities, Nec (8093), Services-Medical Laboratories (8071)

akta.pro primary industry

Ambulatory Specialty Clinics (Multi-Specialty & Single-Specialty) (HLAFABAA)

Keywords

• Multi-specialty medical group
• Ambulatory surgery center
• Clinical research trials
• Specialty healthcare services
• Nursing education programs

Headquarters

HQ city

Murrieta

HQ country

United States

HQ region

North America

Offices11 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Patient Care Services: Fee-for-service healthcare delivery billed to insurance carriers. The practice accepts most major PPOs, Medicare, Tricare, and select HMO insurance plans. Revenue is generated through office visits, procedures, surgeries, and diagnostic services across 50+ medical and surgical specialties.
2. Clinical Research: Clinical trial participation generating revenue through sponsor contracts. United Clinical Research conducts trials for gastroenterology conditions including Crohn's Disease, Ulcerative Colitis, Eosinophilic Esophagitis, NASH, and other indications. Sponsors include pharmaceutical companies such as Roche.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels6 records

Core offering

United Medical Doctors is an independent multi-specialty medical and surgical group delivering outpatient specialty care across 50+ medical and surgical disciplines at 80+ clinical locations staffed by 250 providers in Riverside, Orange, San Diego, and Los Angeles counties. The practice operates ambulatory surgery centers, an urgent care division, an in-house clinical research program, and a nursing education college. Care is delivered through in-person visits, telemedicine, and online scheduling and is billed primarily through major PPO, Medicare, Tricare, and select HMO insurance plans.

Product overview

United Medical Doctors (UMD) is a multi-specialty medical and surgical group structured as a platform with multiple divisions and sub-brands. The core offering is the medical group with 250+ providers across 80+ locations offering 50+ specialties, supplemented by specialized divisions including United Surgery Centers (outpatient surgical facilities), United Clinical Research (clinical trials), United Nursing College (nursing education), and United Medical Fitness (wellness services). The organization also provides digital patient engagement through online scheduling via Zocdoc, telemedicine visits, and a patient portal. The medical specialties portfolio includes primary care through subspecialty surgical services, with major focus areas in gastroenterology, cardiology, orthopaedics, and general surgery.

Differentiator

Problem solved

Functional benefit

Brands

• United Surgery Centers (USC): Outpatient surgical care at ambulatory surgery centers with locations in Temecula, Murrieta, Riverside, Newport Beach, Orange, Irvine, Mission Viejo, Carlsbad and Encinitas.
• United Clinical Research
• United Nursing College
• United Medical Fitness
• United Anesthesia
• United ENT
• United GI
• United Cardiology
• United General Surgery
• United Orthopaedic Surgery
• United Pain Center
• United Breast Center
• United Spine Medicine
• United Urology
• United Oncology
• United Pathology
• United Rheumatologists
• United Imaging Centers
• United Infusion Centers
• United Lab
• United Urgent Care
• United Mental Wellness
• United Holistic Primary Care
• United Sleep Center
• United Occupational Health
• United Foot and Ankle Specialists
• United Weight Loss
• United Wound Care
• United Gynecology
• United Hepatology
• United Breast Endocrine Surgery
• United Dermatology
• United Pediatric Gastroenterologists
• United Plastic Surgery
• United Family Medicine
• United Allergy

Products and services

• United Medical Doctors Multi-Specialty Medical and Surgical Group Core multi-specialty medical and surgical care delivered by 250 providers across 50+ specialties and 80+ clinical locations in Riverside, Orange, San Diego, and Los Angeles counties, billed through major PPO, Medicare, Tricare, and select HMO insurance plans.
• United Surgery Centers (USC) Ambulatory outpatient surgical care provided through 10 United Surgery Centers locations in Temecula, Murrieta, Riverside, Newport Beach, Orange, Irvine, Mission Viejo, Carlsbad, and Encinitas.
• United Clinical Research Clinical trial services in gastroenterology and hepatology indications (Crohn's Disease, Ulcerative Colitis, Eosinophilic Esophagitis, NASH, and others) at research sites in Riverside, San Diego, and Orange Counties, conducted on behalf of pharmaceutical sponsors such as Roche under study contracts.
• United Nursing College Pre-licensure Associate Degree in Nursing (ADN) and RN to BSN nursing degree programs located in Murrieta, CA, designed to train healthcare providers.
• Trinity Health Academy Allied health training programs including the Certified Nursing Assistant program and other allied health courses offered at the Temecula location.
• United Medical Fitness Medical fitness facility services at Temecula and Encinitas locations, including physical therapy, medical weight loss, dietitian services, personal training, metabolic testing, and group exercise classes.

Quantifiable outcome

• One of the largest integrated private practices in California

Named customers1 record

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature3 records

Partnerships

Three partnerships are on record, tiered core.

• UCSD Clinical Innovation NetworkcoreStrategic or Co-development PartnerAffiliation with UCSD Clinical Innovation Network provides academic medicine connection, enabling access to university medical center resources, research collaboration opportunities, and academic training affiliations for the practice.
• UCI HealthcoreStrategic or Co-development PartnerAffiliation with UCI Health provides academic medicine partnership enabling research collaboration, training opportunities, and access to university medical center expertise and resources.
• RochecoreStrategic or Co-development PartnerPharmaceutical sponsor partnership for clinical trials. United Clinical Research is conducting the Roche SIBERITE-1 Crohn's Disease study, generating revenue through clinical research contracts.

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Regional players

• Sutter Health / Palo Alto Medical Foundation: Large integrated multi-specialty delivery system in Northern California offering primary, specialty, ASC, and ancillary services across dozens of locations — comparable integrated multi-specialty structure to UMD but serving a different California geography.

Broad incumbents

• Privia Health Group: Public, national multi-specialty physician enablement platform that partners with independent medical groups across multiple states, providing practice management, payer contracting, and technology infrastructure — comparable to UMD's multi-specialty independent practice model but at national scale and with public-market capital.
• Optum (UnitedHealth Group): Largest U.S. owner of multi-specialty physician groups (including the former DaVita Medical Group and Healthcare Partners), with deep SoCal presence — represents the dominant incumbent acquiring independent practices like UMD and competing for both patients and physician partners.
• Cedars-Sinai Medical Network: Los Angeles-based academic multi-specialty network affiliated with Cedars-Sinai Medical Center, offering extensive primary and specialty care across the region — comparable breadth of specialty services to UMD but anchored to a major hospital brand.
• UCLA Health (UCLA Medical Group): Large academic multi-specialty physician group operating across Los Angeles County with hundreds of specialty and primary care physicians — overlapping significantly with UMD's SoCal specialty coverage and competing for the same patient base and physician talent.

Emerging players

• ChenMed: Multi-specialty primary care group focused on Medicare Advantage seniors with owned clinics, specialists, and integrated pharmacy — operates a similar vertically integrated, capitated multi-specialty model in select U.S. markets and represents a structural competitor for value-based care contracts.
• One Medical (Amazon): Tech-enabled membership-based primary care platform acquired by Amazon, offering in-office and virtual care across multiple U.S. markets including Los Angeles — competes with UMD for the same insured, digitally-engaged patient base in SoCal.

Direct peers

• Hoag Medical Group: Orange County-based multi-specialty physician group affiliated with Hoag Memorial Hospital Presbyterian, offering primary and specialty care across multiple locations — closely comparable to UMD's county-level multi-specialty coverage and integrated delivery model.
• St. Jude Heritage Medical Group (Providence): Southern California multi-specialty medical group affiliated with Providence health system, operating across Orange County with primary and specialty care — directly comparable to UMD's multi-specialty SoCal footprint and integrated delivery structure.
• MemorialCare Medical Group: Large Southern California-based multi-specialty medical group affiliated with a non-profit health system, operating across Orange and Los Angeles counties with primary care, specialty, and ancillary services — directly comparable to UMD's integrated multi-specialty SoCal model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/UnitedMDUrology
• Facebookfacebook.com/SoCalUnitedMD
• LinkedInlinkedin.com/company/unitedmedicaldoctors

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles19 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about United Medical Doctors