Steven Mark Sornsin, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

G59897 Issued in CA

Practice address

350 Hawthorne Avenue
Oakland, CA 94609-3108

Phone

(510) 655-4000

NPI assigned

May 3, 2006

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

Other identifiers 1

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

Specialty

Emergency Medicine

Education

Ohio State University College of Medicine, 1983

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Lifelong Medical CareGroup PAC ID 2062304538, 75 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Alta Bates Summit Medical Center - Alta Bates Camp Hospital, Berkeley, CA, CCN 050305

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Quality

96.63

Improvement activities

40

Cost

81.81

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ssornsin55246@hisp.ehr.sutterhealth.org

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.

• Lifelong Medical Care

  • Geriatric Medicine (Family Medicine) Physician
  • Berkeley, CA
  • NPI 1689670002
  Medicare reassignment Care Compare group NPD
• Lifelong Medical Care

  • Family Medicine Physician
  • Rodeo, CA
  • NPI 1003289463
  NPD
• Berkeley Emergency Medical Group, Inc.

  • Emergency Medicine Physician
  • Oakland, CA
  • NPI 1508874454
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Berkeley, CA
  • NPI 1639523004
  Care Compare affiliation

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

{
    "created_epoch": "1146614400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768867200000",
    "number": "1821056185",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 12469",
            "city": "WESTMINSTER",
            "state": "CA",
            "postal_code": "926852469",
            "telephone_number": "866-809-3551",
            "fax_number": "562-468-0347"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "350 HAWTHORNE AVENUE",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946093108",
            "telephone_number": "510-655-4000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SORNSIN",
        "first_name": "STEVEN",
        "middle_name": "MARK",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-03",
        "last_updated": "2026-01-20",
        "certification_date": "2026-01-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "G59897",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G598970",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Jennifer Juliana Soriano
• Alan J Sorkey, MD
• Anna Sorkin, DPM
• Joanette Sorkin, M.D.
• Miguel Sornia, MHRS
• Candida Johanna Sorto Amaya
• Christina Sosa, MS
• Cristina L Sosa
• Eillen Carolina Sosa, SLD
• Erin Eneida Sosa

• Emergency Medicine Physician in Oakland, CA
• Providers in Oakland, CA by specialty
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 20, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.