Anesthesia Service Medical Group

What Anesthesia Service Medical Group does

Anesthesia Service Medical Group (ASMG) is a physician-owned medical group founded in 1946 and headquartered in San Diego, California, providing comprehensive anesthesia services exclusively within San Diego County. The group employs 270+ board-certified or board-eligible anesthesiologists, many holding subspecialty certifications in internal medicine, critical care, and pediatrics, and holds contracted coverage positions at 10 hospitals (predominantly the Scripps and Sharp health systems) and 17 ambulatory surgery centers. ASMG also staffs the critical care department at Rady Children's Hospital. The group supports approximately 200,000 surgical cases annually, including 20,000+ deliveries, 6,000+ cardiovascular surgeries, and 35,000+ orthopedic surgeries.

ASMG's service portfolio spans general anesthesia, regional anesthesia (spinal, epidural, peripheral nerve blocks), obstetric anesthesia, cardiac anesthesia, transplant anesthesia, orthopedic anesthesia, local anesthesia, and preoperative assessment. There is no proprietary technology platform; the group's digital footprint consists of a basic informational website (asmgmd.com), a third-party PersonaPay bill payment portal, SurveyMonkey-based patient evaluation surveys, and a UserWay accessibility widget. Billing is conducted through standard healthcare billing processes including insurance claims and patient responsibility portions.

Revenue is generated through professional medical billing for anesthesia procedures performed under contracts with healthcare facilities. Operations are managed through Anesthesia Management Professionals (AMP), a wholly-owned subsidiary handling contracts, billing, compliance, accounting, payroll, and investments. The group is governed by an all-physician Board of Directors, with no disclosed external private-equity, venture-capital, or strategic ownership. Leadership transitioned in 2025 with Dr. Yolanda Marzan assuming the presidency succeeding Dr. Andrew Zimmerman.

Name

Anesthesia Service Medical Group

Legal name

Anesthesia Service Medical Group, Inc.

Website

https://asmgmd.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

101–250 employees

Short description

Anesthesia Service Medical Group (ASMG) is a physician-owned medical group founded in 1946 in San Diego, California, employing 270+ board-certified anesthesiologists providing contracted anesthesia coverage at 10 hospitals and 17 surgery centers across San Diego County.

Ownership category

akta.pro rank

Product category

Anesthesia Medical Services

NAICS

Offices of Physicians (62111), Freestanding Ambulatory Surgical and Emergency Centers (621493)

SIC

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

akta.pro primary industry

Perioperative Anesthesia Services & Management (HLAFAIAM)

akta.pro secondary industries

Multi-Specialty Ambulatory Surgery Centers (ASCs) (HLAFAIAA), Pain Management & Interventional Procedure Centers (HLAFAIAH), Orthopedic & Spine Surgery Centers (HLAFAIAG), Single-Specialty ASCs (HLAFAIAB)

Keywords

• Anesthesia medical services
• Hospital physician staffing
• Surgery center anesthesia
• Perioperative care services
• Obstetric anesthesia coverage

Headquarters

HQ city

San Diego

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Others

Revenue model

1. Anesthesia Medical Services: ASMG provides anesthesia services at contracted hospitals and surgery centers. Revenue is generated through medical billing for anesthesia procedures performed during surgeries, labor and delivery, and other medical procedures requiring anesthesia care. Billing is handled through standard healthcare billing processes including insurance claims and patient payments.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

Anesthesia Service Medical Group (ASMG) is a San Diego-based physician group practice that provides comprehensive anesthesia services across 10 hospitals and 17 surgery centers using its 270+ board-certified anesthesiologists. Services span general, regional, obstetric, cardiac, transplant, and orthopedic anesthesia, plus critical care department staffing at Rady Children's Hospital. The group supports over 200,000 surgical cases annually, including 20,000+ deliveries, 6,000+ cardiovascular surgeries, and 35,000+ orthopedic surgeries.

Product overview

Anesthesia Service Medical Group (ASMG) operates as a single unified medical services practice rather than a technology platform. The company provides comprehensive anesthesia services through a network of 270+ board-certified or board-eligible anesthesiologists across 10 hospitals and 16 surgery centers in San Diego. Core services include General Anesthesia, Regional Anesthesia (spinal, epidural, peripheral nerve blocks), Obstetric Anesthesia for labor and delivery, Local Anesthesia, Cardiac Anesthesia, Transplant Anesthesia, and Orthopedic Anesthesia. ASMG also staffs the critical care department at Rady Children's Hospital. The group supports approximately 200,000 surgical cases annually, including 20,000+ deliveries, 6,000 cardiovascular surgeries, and 35,000 orthopedic surgeries. Patient-facing digital services include an online bill payment portal (PersonaPay) and patient evaluation surveys (SurveyMonkey).

Differentiator

Problem solved

Functional benefit

Products and services

• Hospital Anesthesia Staffing Services
• Ambulatory Surgery Center Anesthesia Services
• Pediatric Critical Care Department Staffing
• Preoperative Assessment Services
• Online Bill Payment Portal

Quantifiable outcome

• 200,000+ surgical cases per year
• +3 more outcomes

Named customers10 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• U.S. Anesthesia Partners: One of the largest physician-owned anesthesia practices in the U.S., staffing hospitals and ASCs across multiple states. Directly comparable as a hospital- and ASC-focused anesthesia group practice, but at much greater national scale than ASMG.
• Somnia Anesthesia: National anesthesia management company providing hospital-based and ASC anesthesia staffing. Closely comparable service offering and customer base (acute care hospitals and surgery centers), though Somnia operates across many states versus ASMG's single market.
• North American Partners in Anesthesia (NAPA): National anesthesia and perioperative services group serving hospitals and ambulatory surgery centers. Directly comparable business model (physician group staffing anesthesia at contracted facilities), with broader geographic reach.

Broad incumbents

• TeamHealth: Major physician services organization with anesthesia, emergency medicine, and hospital medicine lines. Comparable in providing outsourced anesthesia coverage to hospitals and ASCs, though anesthesia is one of several service lines.
• Envision Healthcare: Large multi-specialty physician services company with a significant anesthesia division. Comparable anesthesia services but as part of a broader clinical portfolio (emergency medicine, hospitalist, surgical services) and at much larger scale.

Regional players

• Greater Houston Anesthesiology (GHA): Large regional anesthesia group serving Houston-area hospitals and ASCs. Similar physician-owned, multi-site anesthesia practice model with comparable case volumes and hospital-centric customer base, though concentrated in Texas.
• Anesthesia Associates of Ann Arbor: Regional physician-owned anesthesia group serving hospitals and surgery centers in Michigan. Comparable in being a private, single-market anesthesia practice with deep hospital relationships, but operating in a different geography.
• Pacific Anesthesia Medical Group: West Coast anesthesia practice providing hospital and ASC coverage. Comparable physician-only anesthesia group model serving surgical facilities, though smaller in scale and with different geographic footprint than ASMG.

Emerging players

• Anesthesia Management Solutions (AMS): Anesthesia management and staffing company focused on hospital and ASC partnerships. Comparable as a provider of outsourced anesthesia services with similar contractual structure, though typically operating as a management company rather than a physician-owned group.

Others

• EmCare (now part of Envision): National physician staffing organization with historical anesthesia practice management offerings. Adjacent rather than direct peer; competes indirectly for outsourced clinical services contracts at hospitals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/asmgmd

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries1 record

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 Anesthesia Service Medical Group