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JAMES N DREYFUS MD
NPI 1083673552
Internal Medicine - Rheumatology in Munster, IN

Active since March 22, 2006PECOS Enrolled
10110 DON S POWERS DR STE 101D, MUNSTER, IN 46321(219) 670-4421 Get Directions Write a Review

NPPES record last updated: December 15, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 15, 2025, Jul 6, 2021 (2 updates tracked since 2021).

About James N Dreyfus Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JAMES N DREYFUS MD (NPI 1083673552) is an individual rheumatology provider in Munster, Indiana, licensed in Indiana (01032593) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083673552
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameJAMES N DREYFUSCredential: MD
Location Address10110 DON S POWERS DR STE 101DMunster, IN 46321-4070
Mailing Address1600 Green Bay Rd Apt 304Highland Park, IL 60035-5716 · (219) 670-4421
Phone(219) 670-4421
Sole ProprietorYes
Enumeration DateMarch 22, 2006
Last NPPES UpdateDecember 15, 20252 updates tracked since enumeration
NPPES CertifiedDecember 15, 2025
✔ NPI 1083673552 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in IN · 01032593
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
10110 DON S POWERS DR STE 101D, Munster, IN 46321
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Other Identifiers 1

Medicaid200044440AIN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James N Dreyfus Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46321 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Dreyfus's NPI number?

The NPI number for James Dreyfus is 1083673552. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Where is James Dreyfus located?

James Dreyfus practices at 10110 Don S Powers Dr Ste 101D, Munster, IN 46321. The listed phone number is (219) 670-4421.

What is James Dreyfus's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is James Dreyfus enrolled in Medicare?

Yes. James Dreyfus is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for James Dreyfus was last updated on December 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.