Allen Douglas Obrinsky, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

G61060 Issued in CA

Practice address

200 Porter Dr
Suite 300
San Ramon, CA 94583-1587

Phone

(925) 838-6500

Fax

(925) 838-6542

NPI assigned

Nov 4, 2005

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: aobrinsky16792@ehr.johnmuirhealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• John Muir Physician Network

  • General Practice Physician
  • Walnut Creek, CA
  • NPI 1841407665
  Medicare reassignment NPD
• John Muir Health

  • Rehabilitation Hospital Unit
  • Walnut Creek, CA
  • NPI 1447269303
  NPD (past)
• San Ramon Primary Care Medical Group Inc

  • Internal Medicine Physician
  • San Ramon, CA
  • NPI 1245211382

  Pediatrics

  NPD (past)
• San Ramon Regional Medical Center, LLC

  • General Acute Care Hospital
  • San Ramon, CA
  • NPI 1932131489
  NPD (past)
• University of California San Francisco

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • San Francisco, CA
  • NPI 1992818256
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1131062400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1831180132",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 PORTER DR",
            "address_2": "SUITE 300",
            "city": "SAN RAMON",
            "state": "CA",
            "postal_code": "945831587",
            "telephone_number": "925-838-6511",
            "fax_number": "925-838-6544"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 PORTER DR",
            "address_2": "SUITE 300",
            "city": "SAN RAMON",
            "state": "CA",
            "postal_code": "945831587",
            "telephone_number": "925-838-6500",
            "fax_number": "925-838-6542"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OBRINSKY",
        "first_name": "ALLEN",
        "middle_name": "DOUGLAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-04",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "G61060",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Niekachi Nwogu, LCSW
• Noah O'Nan
• Oasis Physical Therapy and Wellness P.C.
• Spencer Oberman
• Ethan Oblea
• Occupational Health Centers of California, a Medical Corporation
• Alana Ochoa
• Sean Augustine Odwyer, CA PARAMEDIC
• Eng Tiong Oei, DDS
• Zachary Oliver Oelerich, LMFT

• Pediatrics Physician in San Ramon, CA
• Providers in San Ramon, CA by specialty
• Pediatrics Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.