MARK ANDREW NELSON MD
NPI 1396972279
Internal Medicine in Ann Arbor, MI
About Mark Andrew Nelson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK ANDREW NELSON MD (NPI 1396972279) is an individual internal medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301516444) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS and maintains a secondary practice location in Denver.
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 (PECOS)
Mark Andrew Nelson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Nelson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 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.
Physician 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.
Referred Medical Equipment & Supplies CMS DME claims 12
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Nelson's NPI number?
The NPI number for Mark Nelson is 1396972279. It was assigned to this individual provider in the NPPES registry on June 17, 2009.
Where is Mark Nelson located?
Mark Nelson practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is Mark Nelson's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Nelson enrolled in Medicare?
Yes. Mark Nelson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Nelson reassigns Medicare benefits to Regents Of The University Of Michigan (Ann Arbor, 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 Mark Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Nelson accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Mark Nelson 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 Mark Nelson was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Mark Andrew Nelson, MD · NPI 1396972279
Internal Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since June 17, 2009.
## Identity
- **NPI:** 1396972279 (Entity type: Individual)
- **Enumerated:** June 17, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 4301516444 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of Michigan (NPI 1003848144, Ann Arbor, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 1, 2026
- **Other identifiers:** Medicaid 84523573 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1396972279) · Data from the CMS NPPES public registry.