William Lewis Marr IV, PA-C

Primary specialty

Medical Physician AssistantTaxonomy code 363AM0700X

License

PA.0008209 Issued in CO

Practice address

810 E 3Rd St Unit 201
Durango, CO 81301-5759

Phone

(970) 764-1790

Fax

(970) 375-7927

NPI assigned

Sep 15, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in CO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Regional Medical Center Hospital, Durango, CO, CCN 060013

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Interoperability endpoints

• Direct secure messaging: william.marr@conviva.eclinicaldirectplus.com

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.

• Citizens Medical Center County of Victoria

  • General Acute Care Hospital
  • Victoria, TX
  • NPI 1124052162
  NPD (past)

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

• Catholic Health Initiatives Colorado

  • General Acute Care Hospital
  • Durango, CO
  • NPI 1083611644
  Care Compare affiliation
• Catholic Health Initiatives Colorado

  • General Acute Care Hospital
  • Durango, CO
  • NPI 1588204010
  Care Compare affiliation
• Catholic Health Initiatives Colorado

  • General Acute Care Hospital
  • Durango, CO
  • NPI 1679113104
  Care Compare affiliation
• Catholic Health Initiatives Colorado

  • General Acute Care Hospital
  • Aztec, NM
  • NPI 1770123382
  Care Compare affiliation

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

{
    "created_epoch": "1158278400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741046400000",
    "number": "1992801179",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 802793",
            "city": "KANSAS CITY",
            "state": "MO",
            "postal_code": "641802793",
            "telephone_number": "800-953-0104"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "810 E 3RD ST UNIT 201",
            "city": "DURANGO",
            "state": "CO",
            "postal_code": "813015759",
            "telephone_number": "970-764-1790",
            "fax_number": "970-375-7927"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1209 Highway 35 N",
            "address_purpose": "LOCATION",
            "city": "Rockport",
            "state": "TX",
            "postal_code": "783824808",
            "country_code": "US",
            "telephone_number": "361-729-9811",
            "fax_number": "361-729-9819",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MARR",
        "first_name": "WILLIAM",
        "middle_name": "LEWIS",
        "name_prefix": "Mr.",
        "name_suffix": "IV",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-15",
        "last_updated": "2025-03-04",
        "certification_date": "2025-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "TX",
            "license": "PA01678",
            "primary": false
        },
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "CO",
            "license": "PA.0008209",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PA STATE LICENSE",
            "identifier": "PA01678",
            "state": "TX"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "william.marr@conviva.eclinicaldirectplus.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1209 Highway 35 N",
            "city": "Rockport",
            "state": "TX",
            "country_code": "US",
            "postal_code": "783824808",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Mark Turpen MD
• Selina Markiewicz, LPCC
• Robert Marks, ATC
• Diane M Markva, AU D
• Alyssa Meghan Marquez, PA-C
• Margaret Marsden, LMT
• Jessica Marsh, MD
• Peter Duncan Marshall, M.D.
• Alanda Sea Martin
• Gregory Albert Martin, MA

• Medical Physician Assistant in Durango, CO
• Providers in Durango, CO by specialty
• Medical Physician Assistant in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 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.