Dean J Williams, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

48666 Issued in CO

Practice address

PO Box 252
Erie, CO 80516-0252

Phone

(720) 505-1753

NPI assigned

Jul 13, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 8

Addresses

Medicare fee-for-service enrollment

Enrolled in CO, NE, PA, MD, TX, ND, IA7 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 7

Specialty

Emergency Medicine

Education

University of Calgary, Faculty of Medicine, 1994

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Geisinger ClinicGroup PAC ID 5395657001, 3,432 clinicians

North Platte Nebraska Hospital CorporationGroup PAC ID 6507856697, 237 clinicians

Woodbury Emergency Group, PCGroup PAC ID 2961737317, 16 clinicians

Trinity Regional Medical CenterGroup PAC ID 7315858529, 170 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Geisinger Wyoming Valley Medical Center Hospital, Wilkes Barre, PA, CCN 390270
• St Lukes Regional Medical Center Hospital, Sioux City, IA, CCN 160146
• Trinity Regional Medical Center Hospital, Fort Dodge, IA, CCN 160016
• Great Plains Health Hospital, North Platte, NE, CCN 280065
• Mercyone Dyersville Medical Center Hospital, Dyersville, IA, CCN 161378

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dean.williams.p1@direct.wcchc.nextgenshare.com
• Direct secure messaging: dwilliams885902@direct.unitypoint.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.

• Geisinger Clinic

  • Family Medicine Physician
  • Danville, PA
  • NPI 1366493868
  Medicare reassignment Care Compare group NPD
• North Platte Nebraska Hospital Corporation

  • General Acute Care Hospital
  • North Platte, NE
  • NPI 1700855533
  Medicare reassignment Care Compare group NPD
• Trinity Regional Medical Center

  • Emergency Medicine Physician
  • Fort Dodge, IA
  • NPI 1073594156
  Medicare reassignment Care Compare group NPD
• Woodbury Emergency Group, PC

  • Emergency Medicine Physician
  • Sioux City, IA
  • NPI 1447813316
  Medicare reassignment Care Compare group NPD
• Brighton Community Emergency Physicians Lpa

  • Emergency Medicine Physician
  • Brighton, CO
  • NPI 1639454242
  Medicare reassignment NPD
• Usacs Community Emergency Services of Colorado, Inc.

  • Emergency Medicine Physician
  • Arvada, CO
  • NPI 1053824979
  Medicare reassignment NPD
• Dubois Regional Medical Center

  • Emergency Medicine Physician
  • Du Bois, PA
  • NPI 1992802391
  Medicare reassignment NPD
• Elk Regional Health Center

  • Emergency Medicine Physician
  • Saint Marys, PA
  • NPI 1114460391
  Medicare reassignment NPD
• J C Blair Memorial Hospital

  • General Acute Care Hospital
  • Huntingdon, PA
  • NPI 1790996445
  Medicare reassignment NPD
• McKenzie County Healthcare Systems Inc

  • Urgent Care Clinic/Center
  • Williston, ND
  • NPI 1396516506
  Medicare reassignment NPD
• Northwest Iowa Hospital Corporation

  • Emergency Medical Services (Emergency Medicine) Physician
  • Sioux City, IA
  • NPI 1215962550
  Medicare reassignment NPD
• St Joseph'S Hospital and Health Center

  • Clinic/Center
  • Dickinson, ND
  • NPI 1730464108
  Medicare reassignment NPD

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

• Geisinger Wyoming Valley

  • Clinic/Center
  • Scranton, PA
  • NPI 1164274247

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley

  • Internal Medicine Physician
  • Wilkes Barre, PA
  • NPI 1780253336

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley

  • Clinic/Center
  • Forty Fort, PA
  • NPI 1912332511

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley

  • Clinic/Center
  • Wilkes Barre, PA
  • NPI 1922860360

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • Clinic/Center
  • Plains, PA
  • NPI 1093001653

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • Diagnostic Radiology Physician
  • Pittston, PA
  • NPI 1104292960

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • Clinic/Center
  • Dickson City, PA
  • NPI 1104624246

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • General Acute Care Hospital
  • Wilkes Barre, PA
  • NPI 1174822068
  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • Clinic/Center
  • Wilkes Barre, PA
  • NPI 1205197894

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • Clinic/Center
  • Mount Pocono, PA
  • NPI 1235424672

  Hospital

  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • General Acute Care Hospital
  • Wilkes Barre, PA
  • NPI 1275620585
  Care Compare affiliation
• Geisinger Wyoming Valley Medical Center

  • General Acute Care Hospital
  • Pittston, PA
  • NPI 1316692585
  Care Compare affiliation

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

{
    "created_epoch": "1152748800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780358400000",
    "number": "1104841501",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 252",
            "city": "ERIE",
            "state": "CO",
            "postal_code": "805160252",
            "telephone_number": "720-505-1753"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "PO BOX 252",
            "city": "ERIE",
            "state": "CO",
            "postal_code": "805160252",
            "telephone_number": "720-505-1753"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "DEAN",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-13",
        "last_updated": "2026-06-02",
        "certification_date": "2026-06-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IA",
            "license": "MD-48063",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WI",
            "license": "61394-20",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NE",
            "license": "26916",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "PA",
            "license": "MD418570",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CO",
            "license": "48666",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "HI",
            "license": "MD17020",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "C205088",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "ND",
            "license": "15305",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Emergency Medicine Physician in Erie, CO
• Providers in Erie, CO by specialty
• Emergency Medicine Physician in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 2, 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.