NPIMap

Individual provider Active NPI

Stephen A Williams, MD

  • Internal Medicine Physician
  • Troy, MI
National Provider Identifier
1962464982
Registry record updated Oct 22, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
4301073784 Issued in MI
Practice address
1639 E Big Beaver Rd Ste 202
Troy, MI 48083-2054
Phone
(248) 606-4190
Fax
(248) 598-5088
NPI assigned
Apr 5, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 22, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 4301073784 MI Primary

Addresses

Primary practice location

1639 E Big Beaver Rd Ste 202
Troy, MI 48083-2054

Mailing address

1639 E Big Beaver Rd Ste 202
Troy, MI 48083-2054
Phone (248) 606-4190

Other identifiers 2

IdentifierTypeStateIssuer
418866710MedicaidMI
1962464982OtherRAILROAD MEDICARE

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address drstephenwilliams@mdvip.com Direct

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
I20100806000086 MI Practitioner - Internal Medicine 6608909932 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Wayne State University School of Medicine, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Mandy Care, LLCGroup PAC ID 6507044948, 7 clinicians

Practice addresses (Care Compare)

1800 W Big Beaver Rd
Troy, MI 48084-3535
Phone (248) 688-0917

7125 Orchard Lake Rd
Suite 210
West Bloomfield, MI 48322-3618
Phone (248) 757-2410

Hospital & facility affiliations

  • Parc Home Care Home health agency, Farmington Hills, MI, CCN 239272
  • Beaumont Hospital Royal Oak Hospital, Royal Oak, MI, CCN 230130
  • Beaumont Hospital, Troy Hospital, Troy, MI, CCN 230269
  • Beaumont Hospital - Grosse Pointe Hospital, Grosse Pointe, MI, CCN 230089
  • Beaumont Hospital - Farmington Hills Hospital, Farmington Hills, MI, CCN 230151

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
4301073784MIMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
M&Y Care, LLC CurrentSince Jul 1, 2025 Accepting new patients
Stephen Williams Internal Medicine MD PC Internal Medicine CurrentSince Jun 30, 2023 Accepting new patients
Matthew D Andrews DPM PC CurrentSince May 9, 2025 Accepting new patients
Baco Care Services LLC Internal Medicine CurrentSince Nov 1, 2023 Accepting new patients
M&Y Care, LLC CurrentSince Jul 1, 2025 Accepting new patients

Locations

1221 S Ortonville Rd
Bldg B
Ortonville, MI 48462
Phone (248) 627-5700

1221 S Ortonville Rd
Ortonville, MI 48462
Phone (248) 627-4978

26911 Northwestern Hwy
Ste 530
Southfield, MI 48033
Phone (313) 530-5494

1639 E Big Beaver Rd
Ste 202
Troy, MI 48083
Phone (248) 606-4190

1800 W Big Beaver Rd
Ste 150
Troy, MI 48084
Phone (248) 649-2323

Interoperability endpoints

  • Direct secure messaging: stephen.williams.1@29039.direct.athenahealth.com

Organizations & group practices 5

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 13

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

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1144195200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761091200000",
    "number": "1962464982",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1639 E BIG BEAVER RD STE 202",
            "city": "TROY",
            "state": "MI",
            "postal_code": "480832054",
            "telephone_number": "248-606-4190",
            "fax_number": "248-598-5088"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1639 E BIG BEAVER RD STE 202",
            "city": "TROY",
            "state": "MI",
            "postal_code": "480832054",
            "telephone_number": "248-606-4190",
            "fax_number": "248-598-5088"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "STEPHEN",
        "middle_name": "A",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-05",
        "last_updated": "2025-10-22",
        "certification_date": "2025-10-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "4301073784",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "418866710",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "1962464982",
            "state": null
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "drstephenwilliams@mdvip.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "email",
            "address_1": "1639 E Big Beaver Rd Ste 202",
            "city": "Troy",
            "state": "MI",
            "country_code": "US",
            "postal_code": "480832054",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Troy, MI

Sources for this page

Verify at the official NPI Registry.