Thomas G Zimmerman, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

G34117 Issued in CA

Practice address

155 Glasson Way
Grass Valley, CA 95945-5723

Phone

(530) 274-6001

NPI assigned

Jul 21, 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

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: thomas.zimmerman@wsmc1.eclinicaldirectplus.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.

• Swope Medical Group Inc

  • Emergency Medicine Physician
  • Grass Valley, CA
  • NPI 1972500593
  Medicare reassignment NPD

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

{
    "created_epoch": "1121904000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1295734127",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "103 PROVIDENCE MINE RD",
            "address_2": "SUITE 202",
            "city": "NEVADA CITY",
            "state": "CA",
            "postal_code": "959592941",
            "telephone_number": "530-470-8377",
            "fax_number": "530-470-8906"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "155 GLASSON WAY",
            "city": "GRASS VALLEY",
            "state": "CA",
            "postal_code": "959455723",
            "telephone_number": "530-274-6001"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZIMMERMAN",
        "first_name": "THOMAS",
        "middle_name": "G",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-21",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "G34117",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G341170",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Matthew Zealear, M.D.
• Zeischegg Chiropractic Kare
• Nancy Lynn Zeisler
• Laura A. Zieman, R.N.
• Bryon Paul Zimmerman
• Ingo Zirpins, M.S.P.T.
• Stacy Zolldan, PHARMD

• Emergency Medicine Physician in Grass Valley, CA
• Providers in Grass Valley, 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 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.