Joan Barbara Gerbasi, M.D.

Primary specialty

Forensic Psychiatry PhysicianTaxonomy code 2084F0202X

License

A64664 Issued in CA

Practice address

423 E St
Davis, CA 95616-4132

Phone

(530) 753-4636

Fax

(530) 753-4655

NPI assigned

May 30, 2007

Sex

Female

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 PA, NY2 enrollments

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 2

Specialty

Psychiatry

Education

University of California, San Francisco School of Medicine, 1996

Medicare assignment

May accept Medicare assignment

Group practices

Montefiore Medical CenterGroup PAC ID 3779496021, 2,809 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Montefiore Medical Center Hospital, Bronx, NY, CCN 330059

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H9678

Interoperability endpoints

• Direct secure messaging: jgerbasi@montefioredirect.com

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.

• Montefiore Medical Center

  • Anesthesiology Physician
  • Bronx, NY
  • NPI 1063525152

  Psychiatry

  Medicare reassignment Care Compare group NPD
• Geisinger Clinic

  • Family Medicine Physician
  • Danville, PA
  • NPI 1366493868
  Medicare reassignment NPD
• Geisinger Clinic

  • Diagnostic Radiology Physician
  • Danville, PA
  • NPI 1558313023
  NPD
• Geisinger Clinic

  • Addiction (Substance Use Disorder) Psychologist
  • Scranton, PA
  • NPI 1639600075
  NPD
• Montefiore Medical Center

  dba Montefiore Community Pharmacy @ CHAM

  • Community/Retail Pharmacy
  • Bronx, NY
  • NPI 1194183715
  NPD

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

• Montefiore Medical Center

  • General Acute Care Hospital
  • Bronx, NY
  • NPI 1952476988
  Care Compare affiliation

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

{
    "created_epoch": "1180483200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1912108473",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "423 E ST",
            "city": "DAVIS",
            "state": "CA",
            "postal_code": "956164132",
            "telephone_number": "530-753-4636",
            "fax_number": "530-753-4655"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "423 E ST",
            "city": "DAVIS",
            "state": "CA",
            "postal_code": "956164132",
            "telephone_number": "530-753-4636",
            "fax_number": "530-753-4655"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GERBASI",
        "first_name": "JOAN",
        "middle_name": "BARBARA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-30",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084F0202X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Forensic Psychiatry",
            "state": "CA",
            "license": "A64664",
            "primary": true
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "A64664",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lissa Joy Geiken, PH.D.
• Generational Wellness and Nursing Services Inc
• Michelle K Geng
• Elyza Genilo, DO
• Nancy K Georges, LMFT
• Shirley German, IBCLC
• Gerner Chiropractic Inc
• Linda M.C. Gerner, D.C.
• Margret Gerriets, LCSW
• Merrill E Gershwin

• Forensic Psychiatry Physician in Davis, CA
• Providers in Davis, CA by specialty
• Forensic Psychiatry Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.