John Bradfield Gerlach, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

R82717 Issued in AZ

Practice address

1625 N Campbell Ave
Tucson, AZ 85719-4330

Phone

(520) 694-8888

NPI assigned

Mar 20, 2023

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

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

Specialty

Family Practice

Education

University of Michigan Medical School, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Santa Rosa Community Health CentersGroup PAC ID 0345130423, 69 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence Santa Rosa Memorial Hospital Hospital, Santa Rosa, CA, CCN 050174
• Sutter Santa Rosa Regional Hospital Hospital, Santa Rosa, CA, CCN 050291

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: jgerlach794126@direct.hfhs.org
• Direct secure messaging: jgerlach656905@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.

• Santa Rosa Community Health Centers

  • Federally Qualified Health Center (FQHC)
  • Santa Rosa, CA
  • NPI 1578631172
  Medicare reassignment Care Compare group

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

• St. Joseph Health Northern California, LLC

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1134152549
  Care Compare affiliation
• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1740413798
  Care Compare affiliation

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

{
    "created_epoch": "1679270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1043912678",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1625 N CAMPBELL AVE",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857194330",
            "telephone_number": "520-694-8888"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1625 N CAMPBELL AVE",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857194330",
            "telephone_number": "520-694-8888"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3569 Round Barn Cir Ste 200",
            "address_purpose": "LOCATION",
            "city": "Santa Rosa",
            "state": "CA",
            "postal_code": "954035784",
            "country_code": "US",
            "telephone_number": "707-583-8800",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GERLACH",
        "first_name": "JOHN",
        "middle_name": "BRADFIELD",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2023-03-20",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "AZ",
            "license": "R82717",
            "primary": true
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "199099",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lawrence M Gerhart, DDS
• Richard Gerhauser, M.D.
• Gerinet of Arizona PLC
• Gerinet Palliative Care, LLC
• Kourtney Gerken, RBT
• Darryl Gerlak
• Gerlinde S. Tynan, MD PLLC
• Sarah Germain, LPC
• German Dobson CVS LLC
• German Dobson CVS LLC

• Emergency Medicine Physician in Tucson, AZ
• Providers in Tucson, AZ by specialty
• Emergency Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 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.