MARY ANN KOSIR MD
NPI 1508803594
Surgery in Detroit, MI

Q: What is Mary Kosir's NPI number?

The NPI number for Mary Kosir is 1508803594. It was assigned to this individual provider in the NPPES registry on May 31, 2006.

Q: What is Mary Kosir's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Mary Kosir was last updated on August 3, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since May 31, 2006PECOS Enrolled

4100 JOHN R, DETROIT, MI 48201(800) 527-6266(313) 576-8699 Get Directions Write a Review

NPPES record last updated: August 3, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Mary Ann Kosir Md NPPES

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

MARY ANN KOSIR MD (NPI 1508803594) is an individual surgery provider in Detroit, Michigan, licensed in Michigan (4301057608) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1508803594

Entity TypeIndividualFemale

Primary Taxonomy208600000X

Provider Legal NameMARY ANN KOSIRCredential: MD

Location Address4100 JOHN RDetroit, MI 48201-2013

Mailing Address1560 E Maple Rd, Suite 400 - CredentialingTroy, MI 48083-1138 · (248) 581-5974 · Fax (248) 581-5640

Phone(800) 527-6266

Fax(313) 576-8699

Sole ProprietorNo

Enumeration DateMay 31, 2006

Last NPPES UpdateAugust 3, 2016

✔ NPI 1508803594 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in MI · 4301057608

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

4100 JOHN R, Detroit, MI 48201

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Other Identifiers 1

Medicare PIN0P30630168MI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Ann Kosir 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.

Medicare Billing Reassignment

Medicare enrollment records show Mary Kosir reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Physician Group

0.4 mi

Internal Medicine

400 MACK AVE STE 2
Detroit, MI 48201

Reassigned Medicare billing, Michigan enrollment
731 clinicians in this Medicare group

NPI 1447299797 (313) 448-9006

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 48201 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

$90.76 typical visit price

range $58.04 – $177.36

Typical copayment $22.69 (range $14.51 – $44.34)

Most-billed visit code 99203

Established Patient

$72.38 typical visit price

range $18.32 – $143.49

Typical copayment $18.09 (range $4.58 – $35.87)

Most-billed visit code 99213

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 18

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

DR. MICHAEL MATTHEW DOMINELLO DO

Radiology (Radiation Oncology)

4100 JOHN R
DETROIT, MI 48201

Wayne County (800) 527-6266

DR. AMMAR SUKARI M.D.

Internal Medicine (Medical Oncology)

4100 JOHN R, KARMANOS CANCER CENTER
DETROIT, MI 48201

Wayne County (800) 527-6266

GOLBON STERBIS NP-C

Nurse Practitioner

4100 JOHN R
DETROIT, MI 48201

Wayne County (800) 527-6266

COURTNEY FRENCH PA

Physician Assistant

4100 JOHN R, KARMANOS CANCER CENTER MIDLEVELS
DETROIT, MI 48201

Wayne County (800) 527-6266

ANDREA OLIVAREZ SEVANTHINATHAN CNP

Nurse Practitioner

4100 JOHN R, KARMANOS CANCER CENTER
DETROIT, MI 48201

Wayne County (800) 527-6266

ERIC G MAYER MD

Radiology (Radiation Oncology)

4100 JOHN R, GERSHENSON RADIATION ONCOLOGY CTR
DETROIT, MI 48201

Wayne County (800) 527-6266

GAIL E NEWTH CNP

Nurse Practitioner

4100 JOHN R, KARMANOS CANCER CENTER MIDLEVELS
DETROIT, MI 48201

Wayne County (800) 527-6266

AMY M WEISE D.O.

Internal Medicine (Medical Oncology)

4100 JOHN R, KARMANOS CANCER CENTER
DETROIT, MI 48201

Wayne County (800) 527-6266

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 Mary Kosir's NPI number?

The NPI number for Mary Kosir is 1508803594. It was assigned to this individual provider in the NPPES registry on May 31, 2006.

Where is Mary Kosir located?

Mary Kosir practices at 4100 John R, Detroit, MI 48201. The listed phone number is (800) 527-6266.

What is Mary Kosir's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Mary Kosir enrolled in Medicare?

Yes. Mary Kosir is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Kosir's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Kosir reassigns Medicare benefits to University Physician Group (Detroit, MI). The 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 Mary Kosir's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Kosir was last updated on August 3, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.