William H Fritz, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

102131 Issued in MO

Practice address

851 E 5TH St
Suite 304
Washington, MO 63090-3135

Phone

(636) 390-2350

NPI assigned

Feb 14, 2006

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

Medicare fee-for-service enrollment

Enrolled in MO

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

Internal Medicine

Education

University of Texas Medical School at Houston, 1987

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mercy Clinic East CommunitiesGroup PAC ID 7214827922, 573 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Hospital Washington Hospital, Washington, MO, CCN 260052

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wfritz1250@directc.mercy.net

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.

• Mercy Clinic East Communities

  • Family Medicine Physician
  • Saint Louis, MO
  • NPI 1043574940

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Mercy Clinic Adult Hospitalists - Washington, LLC

  • Hospitalist Physician
  • Washington, MO
  • NPI 1891943429
  Medicare reassignment NPD
• Mercy Clinic East Communities

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1851335228
  NPD
• Ozarks Medical Center

  dba Ozarks Healthcare

  • General Acute Care Hospital
  • West Plains, MO
  • NPI 1831115641
  NPD (past)

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

• Mercy Hospitals East Communities

  dba Mercy Hospital Washington

  • General Acute Care Hospital
  • Washington, MO
  • NPI 1285664177
  Care Compare affiliation

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

{
    "created_epoch": "1139875200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1407820913",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "851 E 5TH ST",
            "address_2": "SUITE 304",
            "city": "WASHINGTON",
            "state": "MO",
            "postal_code": "630903135",
            "telephone_number": "636-390-2350"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "851 E 5TH ST",
            "address_2": "SUITE 304",
            "city": "WASHINGTON",
            "state": "MO",
            "postal_code": "630903135",
            "telephone_number": "636-390-2350"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FRITZ",
        "first_name": "WILLIAM",
        "middle_name": "H",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-14",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "102131",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Frederick J Peet DPM PC
• Nicholas W Frederickson, M.D.
• Ashley Freund, OTA
• Julie Frick
• Katie Marie Frillman, CRNA
• Lena Gaddy
• Alissa Nadia Galas, MD
• Christopher Galvin, DNP, CRNA
• Cristina M Garcilaso
• Mitchell Gardner, PHARMD

• Internal Medicine Physician in Washington, MO
• Providers in Washington, MO by specialty
• Internal Medicine Physician in Missouri

• 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.
• 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.