NPIMap

Individual provider Active NPI

Ria Thomas

  • Physician Assistant
  • Okemos, MI
National Provider Identifier
1982425203
Registry record updated Feb 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
Practice address
4111 Okemos Rd Ste 103
Okemos, MI 48864-3235
Phone
(517) 993-6366
Fax
(517) 483-2350
NPI assigned
Oct 19, 2024
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 24, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X Primary

Addresses

Primary practice location

4111 Okemos Rd Ste 103
Okemos, MI 48864-3235

Mailing address

4111 Okemos Rd Ste 103
Okemos, MI 48864-3235
Phone (517) 993-6366

Other practice location 1

39242 Dequindre Rd Ste 103
Sterling Heights, MI 48310-1764
Phone (248) 852-2277

Other practice location 2

135 Barclay Cir Ste 100
Rochester Hills, MI 48307-4599
Phone (248) 852-2277

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20251104004291 MI Practitioner - Physician Assistant 2365932746 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2025
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

2255 Glades Rd
Suite 228W
Boca Raton, FL 33431-8535

Hospital & facility affiliations

  • Beaumont Hospital, Troy Hospital, Troy, MI, CCN 230269
  • Trinity Health Oakland Hospital Hospital, Pontiac, MI, CCN 230029
  • Edward W Sparrow Hospital Hospital, Lansing, MI, CCN 230230
  • Beaumont Hospital Royal Oak Hospital, Royal Oak, MI, CCN 230130

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
American Arthritis & Rheumatology Associates -Mi PLLC CurrentSince Nov 1, 2025 Accepting new patients
Arthritis and Rheumatology Center of Mi PC CurrentSince Oct 1, 2025 Accepting new patients
Ghazala Zafar MD PC Current Accepting new patients
University of Detroit Mercy PastSince Oct 20, 2024 Accepting new patients

Locations

2255 Glades Rd
Ste 228W
Boca Raton, FL 33431
Phone (561) 699-7101

4111 Okemos Rd
Ste 103
Okemos, MI 48864
Phone (517) 349-4268

135 Barclay Cir
Ste 100
Rochester Hills, MI 48307
Phone (248) 852-2277

39242 Dequindre Rd
Ste 103
Sterling Hts, MI 48310
Phone (248) 852-2277

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
  • Direct secure messaging: ria.thomas.p16@direct.aara1.nextgenshare.com

Organizations & group practices 4

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.

Hospital & facility affiliations 6

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

NPI Registry JSON

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

{
    "created_epoch": "1729296000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771891200000",
    "number": "1982425203",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4111 OKEMOS RD STE 103",
            "city": "OKEMOS",
            "state": "MI",
            "postal_code": "488643235",
            "telephone_number": "517-993-6366",
            "fax_number": "517-483-2350"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4111 OKEMOS RD STE 103",
            "city": "OKEMOS",
            "state": "MI",
            "postal_code": "488643235",
            "telephone_number": "517-993-6366",
            "fax_number": "517-483-2350"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "39242 Dequindre Rd Ste 103",
            "address_purpose": "LOCATION",
            "city": "Sterling Heights",
            "state": "MI",
            "postal_code": "483101764",
            "country_code": "US",
            "telephone_number": "248-852-2277",
            "fax_number": "248-852-2552",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "135 Barclay Cir Ste 100",
            "address_purpose": "LOCATION",
            "city": "Rochester Hills",
            "state": "MI",
            "postal_code": "483074599",
            "country_code": "US",
            "telephone_number": "248-852-2277",
            "fax_number": "248-852-2552",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "THOMAS",
        "first_name": "RIA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-10-19",
        "last_updated": "2026-02-24",
        "certification_date": "2026-02-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Okemos, MI

Sources for this page

Verify at the official NPI Registry.