MARK CHRISTOPHER CHAMES MD
NPI 1750474961
Obstetrics & Gynecology - Maternal & Fetal Medicine in Ann Arbor, MI
About Mark Christopher Chames Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK CHRISTOPHER CHAMES MD (NPI 1750474961) is an individual maternal & fetal medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301068594) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and maintains a secondary practice location in Traverse City.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Accepted 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
Mark Christopher Chames 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
3Medicare enrollment records show Mark Chames reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 128 clinicians in this Medicare group
Traverse City, MI 49684
- Reassigned Medicare billing, Michigan enrollment
- 492 clinicians in this Medicare group
Escanaba, MI 49829
- Reassigned Medicare billing, Michigan enrollment
- 440 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 Mark Chames's NPI number?
The NPI number for Mark Chames is 1750474961. It was assigned to this individual provider in the NPPES registry on October 2, 2006.
Where is Mark Chames located?
Mark Chames practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is Mark Chames's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Mark Chames enrolled in Medicare?
Yes. Mark Chames 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 Mark Chames's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Chames reassigns Medicare benefits to 3 organizations: Regents Of The University Of Michigan (Ann Arbor, MI), Munson Medical Center (Traverse City, MI) and Dlp Marquette Physician Practices Inc (Escanaba, MI). 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 Mark Chames's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Chames accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Mark Chames 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.
Is Mark Chames affiliated with any hospitals?
According to CMS data, Mark Chames is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Mark Chames was last updated on November 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mark Christopher Chames, MD · NPI 1750474961
Maternal & Fetal Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since October 2, 2006.
## Identity
- **NPI:** 1750474961 (Entity type: Individual)
- **Enumerated:** October 2, 2006
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** 4301068594 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of Michigan (NPI 1639104854, Ann Arbor, MI); Munson Medical Center (NPI 1013222587, Traverse City, MI); Dlp Marquette Physician Practices Inc (NPI 1538415021, Escanaba, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** November 25, 2022
- **Other identifiers:** Medicaid 4526183 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1750474961) · Data from the CMS NPPES public registry.