Individual provider Active NPI

Thomas Wayne Bertsch, MD

  • Critical Care Medicine (Internal Medicine) Physician
  • Sacramento, CA
National Provider Identifier
1235180944
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
G86836 Issued in CA
Practice address
4600 Broadway
Ste 1300
Sacramento, CA 95820
Phone
(916) 874-9823
Fax
(916) 874-2689
NPI assigned
May 15, 2006
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 192363 NY
Critical Care Medicine (Internal Medicine) Physician 207RC0200X G86836 CA Primary
Pulmonary Disease Physician 207RP1001X G86836 CA

Addresses

Primary practice location

4600 Broadway
Ste 1300
Sacramento, CA 95820

Mailing address

PO Box 388
Roseville, CA 95678-0388
Phone (916) 771-6764

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
192363NYMDInternal Medicine Physician
G86836CAMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
County of Sacramento Past Accepting new patients
County of Sacramento Past Accepting new patients

Organizations & group practices 3

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

NPI Registry JSON

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

{
    "created_epoch": "1147651200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1235180944",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 388",
            "city": "ROSEVILLE",
            "state": "CA",
            "postal_code": "956780388",
            "telephone_number": "916-771-6764"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4600 BROADWAY",
            "address_2": "STE 1300",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "95820",
            "telephone_number": "916-874-9823",
            "fax_number": "916-874-2689"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BERTSCH",
        "first_name": "THOMAS",
        "middle_name": "WAYNE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "192363",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "G86836",
            "primary": true
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "G86836",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Sacramento, CA

Sources for this page

  • 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.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.