1. Home
  2. Directory
  3. Indiana
  4. Polis
  5. Pathology
  6. NPI Profile

MEHDI NASSIRI M.D.
NPI 1538335377
Pathology - Anatomic Pathology & Clinical Pathology in Indianapolis, IN

Active since May 01, 2008PECOS EnrolledAccepts Medicare Assignment
635 BARNHILL DR # A128, INDIANAPOLIS, IN 46202(317) 274-4806 Get Directions Write a Review

NPPES record last updated: February 11, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mehdi Nassiri M.d. NPPES

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

MEHDI NASSIRI M.D. (NPI 1538335377) is an individual anatomic pathology & clinical pathology provider in Indianapolis, Indiana, licensed in Indiana (01053974A) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1991).

NPPES Registry Identity

NPI1538335377
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameMEHDI NASSIRICredential: M.D.
Location Address635 BARNHILL DR # A128Indianapolis, IN 46202-5126
Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959
Phone(317) 274-4806
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateMay 1, 2008
Last NPPES UpdateFebruary 11, 2021
NPPES CertifiedFebruary 11, 2021
✔ NPI 1538335377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in IN · 01053974A
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
635 BARNHILL DR # A128, Indianapolis, IN 46202
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska, WellSense Health Plan.Insurance ›

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

Mehdi Nassiri M.d. 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.

PECOS PAC ID9638241920
PECOS Enrollment IDI20251226000558
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Mehdi Nassiri reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Family Physicians, Inc.
1.1 mi
Family Medicine
1701 N SENATE BLVD
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 737 clinicians in this Medicare group
NPI 1043275787 (317) 962-2000
Optum Care Washington PLLC
1,866 mi
Ambulatory Surgical
4011 172ND ST NE
Arlington, WA 98223
  • Reassigned Medicare billing, Washington enrollment
  • 1,285 clinicians in this Medicare group
NPI 1366154304 (360) 454-1900
The Polyclinic PLLC
1,871 mi
Audiologist
1145 BROADWAY
Seattle, WA 98122
  • Reassigned Medicare billing, Washington enrollment
  • 911 clinicians in this Medicare group
NPI 1174594634 (206) 329-1760

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46202 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.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DARIN L WOLFE M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
635 BARNHILL DR # A128
INDIANAPOLIS, IN 46202
Marion County (317) 274-4806
MUHAMMAD TALHA IDREES M.D
Pathology (Anatomic Pathology & Clinical Pathology)
635 BARNHILL DR # A128
INDIANAPOLIS, IN 46202
Marion County (317) 274-4806
INDIANA PEDIATRIC PATHOLOGY INSTITUTE INC
Pathology (Pediatric Pathology)
635 BARNHILL DR # A128
INDIANAPOLIS, IN 46202
Marion County (317) 274-4806
DEAN ALAN HAWLEY M.D
Pathology (Clinical Pathology/Laboratory Medicine)
635 BARNHILL DR # A128
INDIANAPOLIS, IN 46202
Marion County (317) 274-4806
ANDREW T NORD PA
Physician Assistant
635 BARNHILL DR # A128
INDIANAPOLIS, IN 46202
Marion County (317) 274-4806
MEREDITH HULL M.D.
Pathology (Clinical Pathology/Laboratory Medicine)
635 BARNHILL DR # A128
INDIANAPOLIS, IN 46202
Marion County (317) 274-4806

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 Mehdi Nassiri's NPI number?

The NPI number for Mehdi Nassiri is 1538335377. It was assigned to this individual provider in the NPPES registry on May 1, 2008.

Where is Mehdi Nassiri located?

Mehdi Nassiri practices at 635 Barnhill Dr # A128, Indianapolis, IN 46202. The listed phone number is (317) 274-4806.

What is Mehdi Nassiri's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Mehdi Nassiri enrolled in Medicare?

Yes. Mehdi Nassiri 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 Mehdi Nassiri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mehdi Nassiri reassigns Medicare benefits to 3 organizations: University Family Physicians, Inc. (Indianapolis, IN), Optum Care Washington PLLC (Arlington, WA) and The Polyclinic PLLC (Seattle, WA). 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 Mehdi Nassiri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mehdi Nassiri accept?

Health plans from Premera Blue Cross Blue Shield of Alaska and WellSense Health Plan list Mehdi Nassiri as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mehdi Nassiri was last updated on February 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.