James N. Dreyfus, MD
Rheumatology Physician · Munster, IN
James N. Dreyfus, MD is a rheumatology physician with a practice address in Munster, Indiana, and NPI 1083673552, issued on Mar 22, 2006. Check the license (Indiana 01032593, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- James N. Dreyfus
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 01032593 IN
Self-reported in NPPES; status is on the state search - Practice location
- 10110 Don S Powers Dr Ste 101D, Munster, IN 46321
- Phone
- (219) 670-4421
- Enumerated
- Mar 22, 2006
- Record last updated
- Dec 15, 2025
- Medicaid ID
- 200044440A IN
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 127 in Indiana → Look up another NPI →
Verify James N. Dreyfus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01032593Check 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 rheumatology physician in 2024
11 Medicare Part D claims, against an average of 1,978 among the 6,301 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.
James N. Dreyfus among 127 rheumatology physician records in Indiana
James N. Dreyfus, MD is one of 127 rheumatology physician records with a practice address in Indiana. 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 15% of them.
- NPI issued2006 · 15% of these records are older, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2025 · 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 207RR0500X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Indiana
There are 127 rheumatology physician records in Indiana.
All 127 in Indiana → Every provider in Munster → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Malak Awad, D.O.Munster, IN 463211730533985
- John ByunMunster, IN 463211730684671
- Tarek Kudaimi, M.D.Munster, IN 463211689638033
- Anita Zachariah, MDMunster, IN 463211912091968
- Ailia Ali, MDDyer, IN 463111851888317
- Shalini Ravella, MDDyer, IN 463111942444724
- Keith Reich, DODyer, IN 463111902863285
- Azkaa Zaman, DODyer, IN 463111487236204
Common questions
What is James N. Dreyfus, MD's NPI number?
James N. Dreyfus, MD's National Provider Identifier (NPI) is 1083673552, issued on Mar 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James N. Dreyfus, MD located?
The NPPES record lists a practice address at 10110 Don S Powers Dr Ste 101D, Munster, IN, 46321. Phone: (219) 670-4421. Providers update this record themselves, so call before visiting.
How can I verify James N. Dreyfus, MD's license?
NPPES lists Indiana license number 01032593, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James N. Dreyfus, MD prescribe under Medicare Part D?
In 2024, James N. Dreyfus, MD had 11 Medicare Part D claims; the average among rheumatology physician prescribers was 1,978. 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.