John J. Karazim, MD
Internal Medicine Physician · Bloomfield Hills, MI
John J. Karazim, MD is an internal medicine physician with a practice address in Bloomfield Hills, Michigan, and NPI 1164469102, issued on May 31, 2006. Check the license (Michigan 4301040146, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John J. Karazim
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301040146 MI
Self-reported in NPPES; status is on the state search - Practice location
- 290 Chesterfield RD, Bloomfield Hills, MI 48304
- Phone
- (248) 649-2323
- Enumerated
- May 31, 2006
- Record last updated
- Jun 4, 2024
- Fax
- (248) 649-5998
- Medicaid ID
- 104707311 MI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Verify John J. Karazim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301040146Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
24 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
John J. Karazim among 5,735 internal medicine physician records in Michigan
John J. Karazim, 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 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 fileNo · 62% of these records are
- Record last updated2024 · 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).
27 internal medicine physician records list a practice address in Bloomfield Hills
They are 27 of the 1,141 NPPES records with a practice address in Bloomfield Hills, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Bloomfield Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Eulogio Caoili, MDBloomfield Hills, MI 483041336196229
- Mark Florek, M.D.Bloomfield Hills, MI 483041932163276
- Nishath Hakim, MDBloomfield Hills, MI 483041083694830
- Timothy Lamb, M.D.Bloomfield Hills, MI 483041942279260
- Imad Mansoor, MDBloomfield Hills, MI 483041699883082
- Anna Trostinskaia, MDBloomfield Hills, MI 483041912104944
- Richard Schiappacasse, M.D.Clinton Twp, MI 483051942229877
- Noor Alshami, MDBloomfield Hills, MI 483021770111098
Common questions
What is John J. Karazim, MD's NPI number?
John J. Karazim, MD's National Provider Identifier (NPI) is 1164469102, issued on May 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John J. Karazim, MD located?
The NPPES record lists a practice address at 290 Chesterfield RD, Bloomfield Hills, MI, 48304. Phone: (248) 649-2323. Providers update this record themselves, so call before visiting.
How can I verify John J. Karazim, MD's license?
NPPES lists Michigan license number 4301040146, 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 John J. Karazim, MD prescribe under Medicare Part D?
In 2024, John J. Karazim, MD had 24 Medicare Part D claims; 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.