Thomas R Gravelyn, M.D.

Primary specialty

Sleep Medicine (Internal Medicine) PhysicianTaxonomy code 207RS0012X

License

4301044869 Issued in MI

Practice address

5333 McAuley Dr
Suite 3111
Ypsilanti, MI 48197-1014

Phone

(734) 712-7688

Fax

(734) 712-7056

NPI assigned

Mar 24, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in MI

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

Sleep MedicineAlso: Internal Medicine

Education

University of Michigan Medical School, 1981

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Iha Health Services CorporationGroup PAC ID 2466351440, 1,149 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Trinity Health Ann Arbor Hospital Hospital, Ann Arbor, MI, CCN 230156
• Trinity Health Livingston Hospital Hospital, Howell, MI, CCN 230069
• Chelsea Hospital Hospital, Chelsea, MI, CCN 230259
• St Joe Mercy Hospital System Livonia Hospital, Livonia, MI, CCN 230002

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: tgravelyn40676@direct.trinity-health.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.

• Iha Health Services Corporation

  • Obstetrics & Gynecology Physician
  • Canton, MI
  • NPI 1457408965
  Medicare reassignment Care Compare group NPD
• Iha Health Service Corporation

  • Obstetrics & Gynecology Physician
  • Ypsilanti, MI
  • NPI 1831053701
  NPD
• Iha Health Services Corporation

  • Pulmonary Disease Physician
  • Ypsilanti, MI
  • NPI 1528309002
  NPD
• Advanced Pulmonary & Sleep Associates PC

  • Pulmonary Disease Physician
  • Dearborn, MI
  • NPI 1487816419
  NPD (past)
• American Sleep Centers LLC

  • Sleep Disorder Diagnostic Clinic/Center
  • Westland, MI
  • NPI 1396857298
  NPD (past)
• Iha Health Services Corporation

  • Family Medicine Physician
  • Milan, MI
  • NPI 1467509067
  NPD (past)
• Michigan Multispecialty Physicians, P.C.

  • Critical Care Medicine (Internal Medicine) Physician
  • Ypsilanti, MI
  • NPI 1912941337
  NPD (past)

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

• Saint Joseph Mercy Livingston Hospital

  • General Acute Care Hospital
  • Brighton, MI
  • NPI 1093748642
  Care Compare affiliation
• St Joseph Mercy Chelsea Inc

  • General Acute Care Hospital
  • Chelsea, MI
  • NPI 1992761985
  Care Compare affiliation
• St Joseph Mercy Hospital

  • General Acute Care Hospital
  • Ypsilanti, MI
  • NPI 1780658443
  Care Compare affiliation
• St Mary Mercy Hospital

  • General Acute Care Hospital
  • Livonia, MI
  • NPI 1790706901
  Care Compare affiliation

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

{
    "created_epoch": "1143158400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773100800000",
    "number": "1760442636",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "24 FRANK LLOYD WRIGHT DR",
            "address_2": "PO BOX 0446 LOBBY J",
            "city": "ANN ARBOR",
            "state": "MI",
            "postal_code": "481059484",
            "telephone_number": "734-747-6766",
            "fax_number": "734-222-3100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5333 MCAULEY DR",
            "address_2": "SUITE 3111",
            "city": "YPSILANTI",
            "state": "MI",
            "postal_code": "481971014",
            "telephone_number": "734-712-7688",
            "fax_number": "734-712-7056"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRAVELYN",
        "first_name": "THOMAS",
        "middle_name": "R",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-24",
        "last_updated": "2026-03-10",
        "certification_date": "2026-03-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "MI",
            "license": "TG044869",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "MI",
            "license": "TG044869",
            "primary": false
        },
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "MI",
            "license": "4301044869",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "423968610",
            "state": "MI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Mandilyn Renice Graham, LCPC
• Sandra Tollinger Graham, PT
• Derek Wayne Gramza
• Adam Douglas Grant, CPRC, CPSS, CHW
• Sherry Lynne Grant
• Colleen Graves, PA
• Ciara Gravlin
• Brooklyn Gray
• Lakeya Gray
• Great Lakes Prosthetics & Orthotics, Inc

• Sleep Medicine (Internal Medicine) Physician in Ypsilanti, MI
• Providers in Ypsilanti, MI by specialty
• Sleep Medicine (Internal Medicine) Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 10, 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.