William F. Umhau, M.D.

Primary specialty

Emergency Medical Services (Emergency Medicine) PhysicianTaxonomy code 207PE0004X

License

D0033623 Issued in MD

Practice address

100 Hospital Rd
Prince Frederick, MD 20678-4017

Phone

(301) 855-1012

NPI assigned

May 25, 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 MD, DC2 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

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 and National Provider Directory roles.

• American Current Care PA

  • Urgent Care Clinic/Center
  • Addison, TX
  • NPI 1003090879

  DC

  Medicare reassignment NPD
• American Current Care PA

  • Urgent Care Clinic/Center
  • Addison, TX
  • NPI 1235313156

  MD

  Medicare reassignment
• American Current Care PA

  • Urgent Care Clinic/Center
  • Gaithersburg, MD
  • NPI 1164971461
  NPD
• Hospital Physician Services, LLLP

  • General Acute Care Hospital
  • Westminster, MD
  • NPI 1457302713
  NPD (past)
• Joseph S. Fastow, M.D., P.a.

  • Critical Access Hospital
  • Prince Frederick, MD
  • NPI 1861443103
  NPD (past)
• Mep Health, LLC

  • Emergency Medicine Physician
  • Rockville, MD
  • NPI 1164483558
  NPD (past)

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

{
    "created_epoch": "1148515200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1790731420",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 507",
            "city": "OWINGS",
            "state": "MD",
            "postal_code": "207360507",
            "telephone_number": "301-855-3587"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 HOSPITAL RD",
            "city": "PRINCE FREDERICK",
            "state": "MD",
            "postal_code": "206784017",
            "telephone_number": "301-855-1012"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "UMHAU",
        "first_name": "WILLIAM",
        "middle_name": "F.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207PE0004X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Emergency Medical Services",
            "state": "MD",
            "license": "D0033623",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rebecca Trott, LCSW-C
• Barbara R Truscott, PA-C
• Gene Guy Tudor, MD
• Ann L. Ueno, L.C.P.C.
• Nancy Isabel Ulanowicz, M.D.
• Trisha Nicole Ungar, LCSW
• University of Maryland Specialty Care Network LLC
• University of Maryland Specialty Care Network LLC
• Utopia Health Center
• Dianna L Varner

• Emergency Medical Services (Emergency Medicine) Physician in Prince Frederick, MD
• Providers in Prince Frederick, MD by specialty
• Emergency Medical Services (Emergency Medicine) Physician in Maryland

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

Verify at the official NPI Registry.