Stephen A. Williams, MD
Internal Medicine Physician · Troy, MI
Stephen A. Williams, MD is an internal medicine physician with a practice address in Troy, Michigan, and NPI 1962464982, issued on Apr 5, 2006. Check the license (Michigan 4301073784, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Stephen A. Williams
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301073784 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1639 E Big Beaver RD Ste 202, Troy, MI 48083
- Phone
- (248) 606-4190
- Enumerated
- Apr 5, 2006
- Record last updated
- Oct 22, 2025
- Fax
- (248) 598-5088
- Medicaid ID
- 418866710 MI
- Medicare enrollment
- Enrolled (PECOS I20100806000086); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1639 E Big Beaver RD Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Calado, DOInternal Medicine Physician1972567113
Verify Stephen A. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301073784Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,862 Medicare Part D claims for 260 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 62 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium261 claims
- Amlodipine Besylate107 claims
- Ezetimibe103 claims
- Atorvastatin Calcium90 claims
- Losartan Potassium87 claims
- Metoprolol Succinate74 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,077.12
57 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mandy Care, LLCWest Bloomfield, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen A. Williams among 5,735 internal medicine physician records in Michigan
Stephen A. Williams, MD is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1995 · median 2006 among the 3,564 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
117 internal medicine physician records list a practice address in Troy
They are 117 of the 3,809 NPPES records with a practice address in Troy, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Troy → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mohammad Al-Sharabi, M. D.Troy, MI 480831114005576
- Thomas Barriger, MDTroy, MI 480831962464172
- Deborah Borowski, D.O. P.C.Troy, MI 480831962415398
- John Calado, DOTroy, MI 480831972567113
- Michael Davis, M.D.Troy, MI 480831811990518
- Shehla Jaffery-Khalil, M.D.Troy, MI 480831265591507
- Teresa Jaszczak, M.D.Troy, MI 480831508805490
- John Joseph, M.D.Troy, MI 480831043288053
Common questions
What is Stephen A. Williams, MD's NPI number?
Stephen A. Williams, MD's National Provider Identifier (NPI) is 1962464982, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen A. Williams, MD located?
The NPPES record lists a practice address at 1639 E Big Beaver RD Ste 202, Troy, MI, 48083. Phone: (248) 606-4190. Providers update this record themselves, so call before visiting.
How can I verify Stephen A. Williams, MD's license?
NPPES lists Michigan license number 4301073784, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen A. Williams, MD prescribe under Medicare Part D?
In 2024, Stephen A. Williams, MD had 2,862 Medicare Part D claims for 260 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.