DR. MICHAEL ANDREW GISTRAK MD
NPI 1396793972
Specialist in Rahway, NJ
About Dr. Michael Andrew Gistrak Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL ANDREW GISTRAK MD (NPI 1396793972) is an individual specialist in Rahway, New Jersey and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital At Rahway, and is a graduate of Js Weill Medical College, Cornell University (1990).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michael Andrew Gistrak Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
11Medicare enrollment records show Michael Gistrak reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rahway, NJ 07065
- Reassigned Medicare billing, New Jersey enrollment
- 4 clinicians in this Medicare group
Clark, NJ 07066
- Reassigned Medicare billing, New Jersey enrollment
- 5 clinicians in this Medicare group
Roselle Park, NJ 07204
- Reassigned Medicare billing, New Jersey enrollment
- 6 clinicians in this Medicare group
Mountainside, NJ 07092
- Reassigned Medicare billing, New Jersey enrollment
- 3 clinicians in this Medicare group
Millburn, NJ 07041
- Reassigned Medicare billing, New Jersey enrollment
- 3 clinicians in this Medicare group
Summit, NJ 07901
- Reassigned Medicare billing, New Jersey enrollment
- 3 clinicians in this Medicare group
West Orange, NJ 07052
- Reassigned Medicare billing, New Jersey enrollment
- 32 clinicians in this Medicare group
West Orange, NJ 07052
- Reassigned Medicare billing, New Jersey enrollment
- 757 clinicians in this Medicare group
North Bergen, NJ 07047
- Reassigned Medicare billing, New Jersey enrollment
- 6 clinicians in this Medicare group
Prospect Park, NJ 07508
- Reassigned Medicare billing, New Jersey enrollment
- 7 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 14
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Robert Wood Johnson University Hospital At Rahway
Acute Care Hospitals · Rahway, NJMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Michael Gistrak's NPI number?
The NPI number for Michael Gistrak is 1396793972. It was assigned to this individual provider in the NPPES registry on May 5, 2006.
Where is Michael Gistrak located?
Michael Gistrak practices at 865 Stone St, Rahway, NJ 07065. The listed phone number is (732) 499-6139.
What is Michael Gistrak's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Michael Gistrak enrolled in Medicare?
Yes. Michael Gistrak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Gistrak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Gistrak reassigns Medicare benefits to 11 organizations: Rahway Pathology, P.A. (Rahway, NJ), Gastrointestinal Medical Experts, LLC (Clark, NJ), Dr. Ricardo E. Rodriguez, M.D, P.A. (Roselle Park, NJ), Gastrocare LLC (Mountainside, NJ), (Millburn, NJ) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Gistrak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Gistrak affiliated with any hospitals?
According to CMS data, Michael Gistrak is affiliated with Robert Wood Johnson University Hospital At Rahway.
When was this NPI record last updated?
The NPPES record for Michael Gistrak was last updated on November 22, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.
# Dr. Michael Andrew Gistrak, MD · NPI 1396793972
Specialist provider in Rahway, New Jersey. Individual provider, active in the CMS NPPES registry since May 5, 2006.
## Identity
- **NPI:** 1396793972 (Entity type: Individual)
- **Enumerated:** May 5, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Sole proprietor:** No
## Practice location
- **Address:** 865 STONE ST, Rahway, NJ 07065-2742
- **Phone:** (732) 499-6139 · **Fax:** (732) 499-6122
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 11 organizations under Medicare reassignment (form CMS-855R): Rahway Pathology, P.A. (NPI 1467534495, Rahway, NJ); Gastrointestinal Medical Experts, LLC (NPI 1942263777, Clark, NJ); Dr. Ricardo E. Rodriguez, M.D, P.A. (NPI 1477728582, Roselle Park, NJ); Gastrocare LLC (NPI 1497873244, Mountainside, NJ); (NPI 1730150632, Millburn, NJ); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 1990
## Record status
- **NPPES last updated:** November 22, 2017
- **Other identifiers:** Medicaid 6857108 (NJ); Medicare UPIN G24108 (NJ)
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Source: [NPI Profile](https://npiprofile.com/npi/1396793972) · Data from the CMS NPPES public registry.