Gregory James Thomas, DDS, MS
Oral & Maxillofacial Surgery (D.M.D.) · Warren, MI
Gregory James Thomas, DDS, MS is an oral & maxillofacial surgery (d.m.d.) with a practice address in Warren, Michigan, and NPI 1912947227, issued on Jun 7, 2006. Check the license (Michigan 2901013883, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory James Thomas
- Credential
- DDS, MS
- Primary taxonomy
- Oral & Maxillofacial Surgery (D.M.D.) 204E00000X
- License number
- 2901013883 MI
Self-reported in NPPES; status is on the state search - Practice location
- 29427 Ryan RD, Warren, MI 48092
- Phone
- (586) 755-9340
- Enumerated
- Jun 7, 2006
- Record last updated
- Aug 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (586) 755-1081
- Entity
- Type 1 · individual
8 nearest oral & maxillofacial surgery (d.m.d.) records → All 51 in Michigan → Look up another NPI →
Also registered at 29427 Ryan RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shyam Prasad Aravindaksha, BDS, MDSOral & Maxillofacial Surgery (D.M.D.)1902065014
- David Coviak, D.D.S., M.D.Oral and Maxillofacial Surgery (Dentist)1164829438
- Nicolette Essian, DMDOral and Maxillofacial Pathology Dentistry1184240640
- John Hackenberger, DDSOral and Maxillofacial Surgery (Dentist)1790730406
- Michael Kraemer, DMD, MDOral & Maxillofacial Surgery (D.M.D.)1366480238
- Arshi Lehal, MDOral & Maxillofacial Surgery (D.M.D.)1720341886
Verify Gregory James Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 2901013883Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average oral & maxillofacial surgery (d.m.d.) in 2024
120 Medicare Part D claims for 39 beneficiaries, against an average of 366 among the 1,051 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 23 claims were for opioids.
Most prescribed
- Chlorhexidine Gluconate40 claims
- Amoxicillin26 claims
- Tramadol Hcl22 claims
- Ibuprofen17 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.
Gregory James Thomas among 51 oral & maxillofacial surgery (d.m.d.) records in Michigan
Gregory James Thomas, DDS, MS is one of 51 oral & maxillofacial surgery (d.m.d.) records with a practice address in Michigan. 75% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2015 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 204E00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Oral & Maxillofacial Surgery (D.M.D.) providers in Michigan
There are 51 oral & maxillofacial surgery (d.m.d.) records in Michigan.
All 51 in Michigan → Every provider in Warren → Oral & Maxillofacial Surgery (D.M.D.) nationwide →
The 8 oral & maxillofacial surgery (d.m.d.) records with the nearest ZIP codes
- Shyam Prasad Aravindaksha, BDS, MDSWarren, MI 480921902065014
- Michael Kraemer, DMD, MDWarren, MI 480921366480238
- Arshi Lehal, MDWarren, MI 480921720341886
- William Bloom, DDSWarren, MI 480931215950100
- Carlos Ramirez-Neyra, MD, DDSWarren, MI 480931023230927
- Joshua Deuel, D.D.S.Ann Arbor, MI 481031831551472
- Norbert Fernandez, DDSAnn Arbor, MI 481031255442042
- Nick Leone, DDSSt Clair Shores, MI 480811922115633
Common questions
What is Gregory James Thomas, DDS, MS's NPI number?
Gregory James Thomas, DDS, MS's National Provider Identifier (NPI) is 1912947227, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory James Thomas, DDS, MS located?
The NPPES record lists a practice address at 29427 Ryan RD, Warren, MI, 48092. Phone: (586) 755-9340. Providers update this record themselves, so call before visiting.
How can I verify Gregory James Thomas, DDS, MS's license?
NPPES lists Michigan license number 2901013883, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory James Thomas, DDS, MS prescribe under Medicare Part D?
In 2024, Gregory James Thomas, DDS, MS had 120 Medicare Part D claims for 39 beneficiaries; the average among oral & maxillofacial surgery (d.m.d.) prescribers was 366. 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.