Thomas R. Warren II, M.D.

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

J8824 Issued in TX

Practice address

8901 Wisconsin Ave
Apo, AA 20889

Phone

(301) 295-4000

NPI assigned

Dec 19, 2005

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 8

Medicare fee-for-service enrollment

Enrolled in TX, WI, WV3 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 3

Specialty

General Surgery

Education

Texas a & M University System, HSC, College of Medicine, 1994

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.Group PAC ID 9335059856, 566 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Joseph'S Hospital of Buckhannon, Inc Hospital, Buckhannon, WV, CCN 511321

Merit-based Incentive Payment System (MIPS)

Final score

85.04 of 100Reported as group

Quality

76.6

Promoting interoperability

100

Improvement activities

40

Cost

73.53

Merit-based Incentive Payment System (MIPS)

Final score

78.51 of 100Reported as group

Quality

63.02

Promoting interoperability

100

Improvement activities

40

Cost

65.34

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: thomas.warren.1@13464.direct.athenahealth.com
• Direct secure messaging: thomas.warren@direct.myteamcare.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.

• Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc.

  • Clinic/Center
  • Stevens Point, WI
  • NPI 1144991340
  Medicare reassignment Care Compare group NPD
• Aspirus Stevens Point Hospital & Clinics, Inc.

  • General Acute Care Hospital
  • Stevens Point, WI
  • NPI 1538112230
  Medicare reassignment NPD
• DHHS PHS Naihs Chinle Comprehensive Health Care Facility

  • General Acute Care Hospital
  • Chinle, AZ
  • NPI 1508800129

  TX

  Medicare reassignment NPD
• Divine Savior Healthcare, Inc.

  • General Acute Care Hospital
  • Portage, WI
  • NPI 1124083894
  Medicare reassignment NPD
• Hendrick Provider Network

  • Internal Medicine Physician
  • Abilene, TX
  • NPI 1396961322

  Surgery

  Medicare reassignment NPD
• Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc.

  • General Practice Physician
  • Rhinelander, WI
  • NPI 1548628100
  NPD
• Aspirus Stevens Point Hospital & Clinics, Inc.

  • Clinic/Center
  • Stevens Point, WI
  • NPI 1679706022
  NPD
• DHHS PHS Naihs Chinle Comprehensive

  • Ambulatory Surgical Clinic/Center
  • Chinle, AZ
  • NPI 1922253129
  NPD
• DHHS PHS Naihs Chinle Comprehensive Health Care Facility

  • General Acute Care Hospital
  • Rock Point, AZ
  • NPI 1154344133
  NPD
• Divine Savior Healthcare, Inc.

  • Rural Health Clinic/Center
  • Portage, WI
  • NPI 1386154417
  NPD
• Hendrick Provider Network

  • Rural Health Clinic/Center
  • San Saba, TX
  • NPI 1346044401
  NPD
• St Josephs Hospital of Buckhannon Inc

  • Critical Access Hospital
  • Buckhannon, WV
  • NPI 1124005061
  NPD

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

• St Josephs Hospital of Buckhannon Inc

  • Critical Access Hospital
  • Buckhannon, WV
  • NPI 1124005061
  Care Compare affiliation

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

{
    "created_epoch": "1134950400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777248000000",
    "number": "1669458030",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "MIL",
            "address_1": "8901 WISCONSIN AVE",
            "city": "APO",
            "state": "AA",
            "postal_code": "20889"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "MIL",
            "address_1": "8901 WISCONSIN AVE",
            "city": "APO",
            "state": "AA",
            "postal_code": "20889",
            "telephone_number": "301-295-4000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARREN",
        "first_name": "THOMAS",
        "middle_name": "R.",
        "name_prefix": "Dr.",
        "name_suffix": "II",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-19",
        "last_updated": "2026-04-27",
        "certification_date": "2026-04-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "TX",
            "license": "J8824",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "TX",
            "license": "J8824",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "FIRSTCARE COMMERCIAL",
            "identifier": "126446101",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HMO BLUE",
            "identifier": "87792Z",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200038640A",
            "state": "OK"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PRESBYTERIAN SALUD & HMO",
            "identifier": "201047880",
            "state": "NM"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BC/BS",
            "identifier": "8P2631",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "126446102",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "54338026",
            "state": "NM"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRIWEST",
            "identifier": "A035",
            "state": "NM"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 27, 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.