Michael Barnes
Internal Medicine Physician · Royal Oak, MI
Michael Barnes is an internal medicine physician with a practice address in Royal Oak, Michigan, and NPI 1588633176, issued on Mar 16, 2006. Check the license (Michigan 4301070211, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Michael Barnes
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301070211 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3535 W 13 Mile RD, Royal Oak, MI 48073
- Phone
- (248) 551-3000
- Enumerated
- Mar 16, 2006
- Record last updated
- May 21, 2025
- Medicaid ID
- 4266997 MI
- Medicare enrollment
- Enrolled (PECOS I20100506000622); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 3535 W 13 Mile RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Barnes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301070211Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% more Medicare Part D claims than the average internal medicine physician in 2024
4,290 Medicare Part D claims for 305 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 164 claims were for opioids.
Most prescribed
- Atorvastatin Calcium261 claims
- Rosuvastatin Calcium253 claims
- Losartan Potassium248 claims
- Amlodipine Besylate237 claims
- Omeprazole149 claims
- Alprazolam137 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
- Iha Health Services CorporationPontiac, MI
- Iha Ooma Primary LLCLake Orion, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Barnes among 5,735 internal medicine physician records in Michigan
Michael Barnes 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1997 · median 2006 among the 3,564 with a school on file
- Record last updated2025 · 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).
218 internal medicine physician records list a practice address in Royal Oak
They are 218 of the 3,887 NPPES records with a practice address in Royal Oak, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Royal Oak → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shanu Agarwal, MDRoyal Oak, MI 480731992759302
- Robin Ehrmann, MDRoyal Oak, MI 480731992788541
- Ali Farhat, MDRoyal Oak, MI 480731467411363
- Brent FullerRoyal Oak, MI 480731871552646
- Joseph James, MDRoyal Oak, MI 480731154398196
- Frederick Karoub, MDRoyal Oak, MI 480731679554562
- Carl Karoub, MDRoyal Oak, MI 480731063494706
- Lynda MisraRoyal Oak, MI 480731942225206
Common questions
What is Michael Barnes's NPI number?
Michael Barnes's National Provider Identifier (NPI) is 1588633176, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Barnes located?
The NPPES record lists a practice address at 3535 W 13 Mile RD, Royal Oak, MI, 48073. Phone: (248) 551-3000. Providers update this record themselves, so call before visiting.
How can I verify Michael Barnes's license?
NPPES lists Michigan license number 4301070211, 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 Michael Barnes prescribe under Medicare Part D?
In 2024, Michael Barnes had 4,290 Medicare Part D claims for 305 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.