Dr. Michael Gregory Williams, MD
- Medicare services, 2024
- 171
- Medicare patients, 2024
- 54
- Part D claims, 2024
- 1,915
- Hospital affiliations
- 1
- Industry payments
- $246
- Practice address
- 44201 Dequindre Road, Troy, MI 48085
- Practice phone
- Call (248) 964-8800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Michael Gregory Williams is a general practice physician in Troy, Michigan
Dr. Williams practices at Corewell Health Beaumont Troy Hospital in Troy, Michigan, part of Corewell Health.
Dr. Williams' NPI, 1578561304, was assigned on July 14, 2005. Dr. Williams graduated from University of Michigan Medical School in 1984. Dr. Williams holds Michigan license 4301049187.
- NPI
- 1578561304NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274429303
- NPI enumeration date
- July 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (248) 964-8800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Gregory Williams practices at Corewell Health Beaumont Troy Hospital in Troy, Michigan
Dr. Williams' primary practice is Corewell Health Beaumont Troy Hospital, at 44201 Dequindre Road, Troy, MI 48085 in Oakland County. The practice phone is (248) 964-8800.
- Corewell Health Beaumont Troy Hospital44201 Dequindre Road, Troy, MI 48085 · Oakland CountyPhone(248) 964-8800
Source: Dmand AI Affiliation Data
Dr. Michael Gregory Williams is affiliated with 4 sites of care and 3 medical groups
Dr. Williams' primary practice is Corewell Health Beaumont Troy Hospital in Troy, Michigan, part of Corewell Health. The medical group on file is Theoria Medical. Dmand AI also links Dr. Williams to 2 more medical groups, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility, 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. Michael Gregory Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Beaumont Troy Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Gregory Williams is one of 227 general practice physicians in Michigan
General practice is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Williams is licensed in Michigan.
Specialties and state licenses
- General practice, MichiganPrimary
General practice physicians near Dr. Williams
Counts of general practice physicians 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. Michael Gregory Williams billed Medicare for 171 services in 2024
CMS data shows 171 Medicare services from Dr. Williams across 2 procedure codes in 2024, all of them office visits, for 54 Medicare patients. Medicare paid $11,919 for them. Every service was in an office.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4792024: 17164%
Dr. Williams compared with the Michigan median for general practice physicians, 2024
- Dr. Williams
- Michigan median
- Medicare services
- 171vs 21320% below
- Medicare patients
- 54vs 8335% below
- Part D claims
- 1,748vs 1789.8 times
Medians across 212 general practice physicians 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Gregory Williams treated 54 Medicare patients in 2024, average age 63
CMS counts 54 Medicare patients who saw Dr. Williams in 2024. The largest group is under 65, with 26 patients. 75% of them have high blood pressure, and 63% have arthritis. 78% are also on Medicaid. Their average risk score is 1.83, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 73, with 46% 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
- Women2444%
- Men3056%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure75%
- Arthritis63%
- High cholesterol63%
- Tobacco use59%
- COPD44%
- Ischemic heart disease35%
- Diabetes33%
- Mood disorders31%
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 73
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Gregory Williams wrote 1,915 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 1,915 Medicare Part D claims for 152 patients. 97% of them were for generic drugs. CMS names the drug for 1,748 of them, across 25 drugs with 11 or more claims each, at $50,318 in total drug cost. In 2023, CMS named 2,753 claims across 26 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic1,850 claims97%
- Brand-name and other65 claims3%
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
- Opioids40%757 of 1,915 claims
- Antibiotics1%12 of 1,915 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: 2,7532024: 1,74837%
Drugs named by CMS: 25 in 2024, 26 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
How Dr. Michael Gregory Williams takes part in Medicare
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael Gregory Williams received $246 in industry payments from 2016 to 2023
CMS Open Payments shows 12 general payments to Dr. Williams from 5 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $134.
General payments to Dr. Williams by program year, 2016 to 2023
Companies that paid Dr. Williams the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Gregory Williams graduated from University of Michigan Medical School
Dr. Williams graduated from University of Michigan Medical School in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Gregory 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. Michael Gregory 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. Michael Gregory Williams' NPI number?
Dr. Michael Gregory Williams' NPI number is 1578561304. It was assigned on July 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Gregory Williams?
Dr. Michael Gregory Williams is a general practice physician in Troy, Michigan. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Michael Gregory Williams practice?
Dr. Williams practices at 44201 Dequindre Road, Troy, MI 48085. Dr. Williams' primary practice is Corewell Health Beaumont Troy Hospital in Troy, Michigan, part of Corewell Health. Dmand AI also links Dr. Williams to 2 medical groups, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility.
What is Dr. Michael Gregory Williams' office phone number?
The practice phone on file for Dr. Williams is (248) 964-8800.
What is Dr. Michael Gregory Williams' medical license number?
Dr. Williams holds Michigan license 4301049187.
Which hospitals is Dr. Michael Gregory Williams affiliated with?
Dr. Williams practices at Corewell Health Beaumont Troy Hospital in Troy, Michigan.
What medical group is Dr. Michael Gregory Williams part of?
Dr. Williams is linked to Theoria Medical. Dmand AI links Dr. Williams to 2 more medical groups.
Does Dr. Michael Gregory Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 171 services in 2024, and Dr. Williams accepts Medicare assignment.
How many Medicare patients does Dr. Michael Gregory Williams see?
CMS counts 54 Medicare patients who saw Dr. Williams in 2024, with an average age of 63.
What services does Dr. Michael Gregory Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99213).
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Where did Dr. Michael Gregory Williams go to medical school?
Dr. Williams graduated from University of Michigan Medical School in 1984.
What drugs does Dr. Michael Gregory Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Oxycodone HCl, Oxycodone-Acetaminophen and Cyclobenzaprine HCl.
Has Dr. Michael Gregory Williams received payments from drug or device companies?
CMS Open Payments shows $246 in general payments to Dr. Williams from 5 companies from 2016 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Michael Gregory Williams been practicing?
Dr. Williams graduated from medical school in 1984, 42 years ago.
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