Gillian S. Tyner, DO
Gastroenterology Physician · Farmington Hills, MI
Gillian S. Tyner, DO is a gastroenterology physician with a practice address in Farmington Hills, Michigan, and NPI 1427797976, issued on Jun 2, 2022. Check the license (Michigan 1427797976, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Gillian S. Tyner
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 1427797976 MI
Self-reported in NPPES; status is on the state search - Practice location
- 28050 Grand River Ave, Farmington Hills, MI 48336
- Phone
- (248) 471-8000
- Enumerated
- Jun 2, 2022
- Record last updated
- Jun 29, 2026
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 550 in Michigan → Look up another NPI →
Also registered at 28050 Grand River Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cheryl Adams, CRNACertified Registered Nurse Anesthetist1730476227
- Gloria AdamsCertified Registered Nurse Anesthetist1326051350
Verify Gillian S. Tyner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 1427797976Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average gastroenterology physician in 2024
284 Medicare Part D claims for 53 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium32 claims
- Amlodipine Besylate29 claims
- Hydrochlorothiazide11 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.
Gillian S. Tyner among 550 gastroenterology physician records in Michigan
Gillian S. Tyner, DO is one of 550 gastroenterology physician records with a practice address in Michigan. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 99% of them.
- NPI issued2022 · 99% of these records are older, under 1% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2026 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Michigan
There are 550 gastroenterology physician records in Michigan.
All 550 in Michigan → Every provider in Farmington Hills → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- James Aldridge, DOFarmington Hills, MI 483361619608916
- Michael Biederman, D.O.Farmington Hills, MI 483361962472423
- Olga Brushaber, DOFarmington Hills, MI 483361306259627
- Jared Grodman, DOFarmington Hills, MI 483361013404540
- Saakshi Joshi, MDFarmington Hills, MI 483361407427222
- Jolian Kathawa, D.O.Farmington, MI 483361083065916
- Steven Klein, D.O.Farmington Hills, MI 483361316917545
- William Raminick, D.O.Farmington Hills, MI 483361346210317
Common questions
What is Gillian S. Tyner, DO's NPI number?
Gillian S. Tyner, DO's National Provider Identifier (NPI) is 1427797976, issued on Jun 2, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Gillian S. Tyner, DO located?
The NPPES record lists a practice address at 28050 Grand River Ave, Farmington Hills, MI, 48336. Phone: (248) 471-8000. Providers update this record themselves, so call before visiting.
How can I verify Gillian S. Tyner, DO's license?
NPPES lists Michigan license number 1427797976, 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 Gillian S. Tyner, DO prescribe under Medicare Part D?
In 2024, Gillian S. Tyner, DO had 284 Medicare Part D claims for 53 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.