Benjamin Mairs, MD
Internal Medicine Physician · Grand Blanc, MI
Benjamin Mairs, MD is an internal medicine physician with a practice address in Grand Blanc, Michigan, and NPI 1922737634, issued on Jun 8, 2022. Check the license (Michigan 4351049342, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Benjamin Mairs
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4351049342 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1 Genesys Pkwy, Grand Blanc, MI 48439
- Phone
- (810) 606-5986
- Enumerated
- Jun 8, 2022
- Record last updated
- Jun 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20260218001761); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1 Genesys Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sana Ahmed, MDFamily Medicine Physician1871974592
Verify Benjamin Mairs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4351049342Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
101 Medicare Part D claims for 20 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril12 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.
Bills Medicare through 2 group practices
- Bryan Hospital KearneyKearney, NE
- North Platte Nebraska Hospital CorporationNorth Platte, NE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Mairs among 5,735 internal medicine physician records in Michigan
Benjamin Mairs, 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 2022, is newer than 87% of them.
- NPI issued2022 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2022 · median 2006 among the 3,564 with a school on file
- Record last updated2022 · 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).
100 internal medicine physician records list a practice address in Grand Blanc
They are 100 of the 1,735 NPPES records with a practice address in Grand Blanc, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Grand Blanc → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Badar Ahmed, M.D.Grand Blanc, MI 484391699768796
- Indira Alluru, MDGrand Blanc, MI 484391003918095
- Ann Burton, MDGrand Blanc, MI 484391528253689
- Osama Galal, M.D.Grand Blanc, MI 484391891735148
- Dianne Gregory, M.D.Grand Blanc, MI 484391497795462
- Jane Johnson, M.D.Grand Blanc, MI 484391427132877
- El Sheikh Eltayeb Kineish, M.D.Grand Blanc, MI 484391861405797
- Prasad Kommareddi, M.D.Grand Blanc, MI 484391669564498
Common questions
What is Benjamin Mairs, MD's NPI number?
Benjamin Mairs, MD's National Provider Identifier (NPI) is 1922737634, issued on Jun 8, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Mairs, MD located?
The NPPES record lists a practice address at 1 Genesys Pkwy, Grand Blanc, MI, 48439. Phone: (810) 606-5986. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Mairs, MD's license?
NPPES lists Michigan license number 4351049342, 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 Benjamin Mairs, MD prescribe under Medicare Part D?
In 2024, Benjamin Mairs, MD had 101 Medicare Part D claims for 20 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.