Dr. Stephen A. Williams, MD
- Medicare services, 2024
- 359
- Medicare patients, 2024
- 80
- Part D claims, 2024
- 2,862
- Hospital affiliations
- 4
- Industry payments
- $2,466
- Practice address
- 3601 W Thirteen Mile Rd, Royal Oak, MI 48073
- Practice phone
- Call (248) 898-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Williams' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stephen A. Williams is an internist in Royal Oak, Michigan
Dr. Williams practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health.
Dr. Williams' NPI, 1962464982, was assigned on April 5, 2006. Dr. Williams graduated from Wayne State University School of Medicine in 1995. Dr. Williams holds Michigan license 4301073784.
- NPI
- 1962464982NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608909932
- NPI enumeration date
- April 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (248) 898-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen A. Williams practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan
Dr. Williams' primary practice is Corewell Health William Beaumont University Hospital, at 3601 W Thirteen Mile Rd, Royal Oak, MI 48073 in Oakland County. The practice phone is (248) 898-5400.
- Corewell Health William Beaumont University Hospital3601 W Thirteen Mile Rd, Royal Oak, MI 48073 · Oakland CountyPhone(248) 898-5400
Source: Dmand AI Affiliation Data
Dr. Stephen A. Williams is affiliated with 9 sites of care and 4 medical groups
Dr. Williams' primary practice is Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health. Dr. Williams is also affiliated with Corewell Health Beaumont Troy Hospital. The medical group on file is Atlas Medical Group. Dmand AI also links Dr. Williams to 2 more hospitals, 3 medical groups, 2 group practices and clinics, 2 home health agencies and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen A. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health William Beaumont University Hospital | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Corewell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Stephen A. Williams is one of 4,804 internists in Michigan
Internal medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Williams is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Williams
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen A. Williams billed Medicare for 359 services in 2024
CMS data shows 359 Medicare services from Dr. Williams across 6 procedure codes in 2024, for 80 Medicare patients. Medicare paid $36,267 for them. Every service was in an office.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5032024: 28044%
- Other services
- 2023: 762024: 3751%
- Tests and treatments
- 2023: 362024: 2142%
- Surgery
- 2023: 1332024: 2184%
Dr. Williams compared with the Michigan median for internists, 2024
- Dr. Williams
- Michigan median
- Medicare services
- 359vs 42315% below
- Medicare patients
- 80vs 15950% below
- Part D claims
- 2,310vs 3147.4 times
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Williams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen A. Williams treated 80 Medicare patients in 2024, average age 77
CMS counts 80 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 31 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 72, with 43% women.
Dr. Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Williams' Medicare patients by sex, 2024
- Women4354%
- Men3746%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Ischemic heart disease48%
- Arthritis46%
- Chronic kidney disease30%
- Cancer26%
- Anxiety25%
- Diabetes21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen A. Williams wrote 2,862 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 2,862 Medicare Part D claims for 260 patients. 89% of them were for generic drugs. CMS names the drug for 2,310 of them, across 68 drugs with 11 or more claims each, at $155,970 in total drug cost. In 2023, CMS named 8,845 claims across 134 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic2,546 claims89%
- Brand-name282 claims10%
- Other34 claims1%
Dr. Williams' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Williams' Part D claims, 2024
- Opioids2%62 of 2,862 claims
- Antibiotics4%121 of 2,862 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8,8452024: 2,31074%
Drugs named by CMS: 68 in 2024, 134 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Stephen A. Williams offers telehealth to Medicare patients
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williams as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Stephen A. Williams received $2,466 in industry payments from 2023 to 2025
CMS Open Payments shows 126 general payments to Dr. Williams from 23 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $370.
General payments to Dr. Williams by program year, 2023 to 2025
Companies that paid Dr. Williams the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen A. Williams graduated from Wayne State University School of Medicine
Dr. Williams graduated from Wayne State University School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen A. Williams's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stephen A. Williams
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stephen A. Williams' NPI number?
Dr. Stephen A. Williams' NPI number is 1962464982. It was assigned on April 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen A. Williams?
Dr. Stephen A. Williams is an internist in Royal Oak, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stephen A. Williams practice?
Dr. Williams practices at 3601 W Thirteen Mile Rd, Royal Oak, MI 48073. Dr. Williams' primary practice is Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health. Dmand AI also links Dr. Williams to 2 hospitals, 3 medical groups, 2 group practices and clinics, 2 home health agencies and 1 physician office.
What is Dr. Stephen A. Williams' office phone number?
The practice phone on file for Dr. Williams is (248) 898-5400.
What is Dr. Stephen A. Williams' medical license number?
Dr. Williams holds Michigan license 4301073784.
Which hospitals is Dr. Stephen A. Williams affiliated with?
Dr. Williams practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan. Dr. Williams is also affiliated with Corewell Health Beaumont Troy Hospital. Dmand AI links Dr. Williams to 2 more hospitals.
What medical group is Dr. Stephen A. Williams part of?
Dr. Williams is linked to Atlas Medical Group. Dmand AI links Dr. Williams to 3 more medical groups.
Does Dr. Stephen A. Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 359 services in 2024, and Dr. Williams accepts Medicare assignment.
Does Dr. Stephen A. Williams offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Williams as offering telehealth services.
How many Medicare patients does Dr. Stephen A. Williams see?
CMS counts 80 Medicare patients who saw Dr. Williams in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Stephen A. Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Stephen A. Williams go to medical school?
Dr. Williams graduated from Wayne State University School of Medicine in 1995.
What drugs does Dr. Stephen A. Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Rosuvastatin Calcium, Amlodipine Besylate and Ezetimibe.
Has Dr. Stephen A. Williams received payments from drug or device companies?
CMS Open Payments shows $2,466 in general payments to Dr. Williams from 23 companies from 2023 to 2025. The largest total came from Amgen Inc.
How long has Dr. Stephen A. Williams been practicing?
Dr. Williams graduated from medical school in 1995, 31 years ago.
Selling to internal medicine practices?
See internists in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card