Michael A Katz, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A77114 Issued in CA

Practice address

101 E Valencia Mesa Dr
Fullerton, CA 92835-3809

Phone

(714) 992-3969

Fax

(714) 992-3169

NPI assigned

Jul 25, 2006

Last updated

May 6, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

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

Critical Care (Intensivists)Also: Pulmonary Disease

Education

University of Arizona College of Medicine, 2000

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence St. Jude Medical Center Hospital, Fullerton, CA, CCN 050168

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Providence Medical Foundation

  • Family Medicine Physician
  • Brea, CA
  • NPI 1871607762
  Medicare reassignment Care Compare group
• Providence Medical Foundation

  • General Practice Physician
  • Diamond Bar, CA
  • NPI 1285890624
  NPD
• Providence Medical Foundation

  • Family Medicine Physician
  • Anaheim, CA
  • NPI 1609925957
  NPD
• Antelope Valley Emergency Medical Associates Inc

  • Emergency Medicine Physician
  • Lancaster, CA
  • NPI 1225054257
  NPD (past)
• St Jude Hospital Inc

  dba Providence St. Jude Medical Center

  • General Acute Care Hospital
  • Fullerton, CA
  • NPI 1194926279
  NPD (past)

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

• St Jude Hospital Inc

  dba Providence St. Jude Medical Center

  • General Acute Care Hospital
  • Fullerton, CA
  • NPI 1194926279
  Care Compare affiliation
• St Jude Hospital Inc

  dba Providence St. Jude Medical Center

  • General Acute Care Hospital
  • Brea, CA
  • NPI 1891904942
  Care Compare affiliation

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

{
    "created_epoch": "1153785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778025600000",
    "number": "1841213899",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "101 E VALENCIA MESA DR",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928353809",
            "telephone_number": "714-992-3969",
            "fax_number": "714-992-3169"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 E VALENCIA MESA DR",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928353809",
            "telephone_number": "714-992-3969",
            "fax_number": "714-992-3169"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "725 W La Veta Ave Ste 260",
            "address_purpose": "LOCATION",
            "city": "Orange",
            "state": "CA",
            "postal_code": "928684439",
            "country_code": "US",
            "telephone_number": "714-771-8006",
            "fax_number": "714-744-8630",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KATZ",
        "first_name": "MICHAEL",
        "middle_name": "A",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-25",
        "last_updated": "2026-05-06",
        "certification_date": "2026-05-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A77114",
            "primary": false
        },
        {
            "code": "207RH0002X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hospice and Palliative Medicine",
            "state": "CA",
            "license": "A77114",
            "primary": false
        },
        {
            "code": "2084A2900X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurocritical Care",
            "state": "CA",
            "license": "A77114",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "A77114",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A77114",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A771140",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Daisy Kates
• Joseph Katigbak
• Amir Kativ, PHARM.D.
• Christina C Kato, OTR/L
• Jeffery S. Katz, PHD
• Robinjot Kaur
• Henry Rivera Kaw Jr., M.D.
• Tricia S. Kawaguchi, O.D.
• Mikaela Kawahara
• Sharon Kay Kawai, M.D.

• Internal Medicine Physician in Fullerton, CA
• Providers in Fullerton, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 6, 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.