JOHN E BILLI MD
NPI 1396834255
Internal Medicine in Ann Arbor, MI
About John E Billi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN E BILLI MD (NPI 1396834255) is an individual internal medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301041756) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John E Billi Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Billi 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.
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 John Billi's NPI number?
The NPI number for John Billi is 1396834255. It was assigned to this individual provider in the NPPES registry on October 11, 2006.
Where is John Billi located?
John Billi practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is John Billi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Billi enrolled in Medicare?
Yes. John Billi is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Billi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Billi 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 John Billi'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 John Billi was last updated on September 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# John E Billi, MD · NPI 1396834255
Internal Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since October 11, 2006.
## Identity
- **NPI:** 1396834255 (Entity type: Individual)
- **Enumerated:** October 11, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 4301041756 (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:** September 22, 2020
- **Other identifiers:** Medicaid 1359303 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1396834255) · Data from the CMS NPPES public registry.