MELISSA H OLKEN MD, PHD
NPI 1265540611
Internal Medicine in Ann Arbor, MI
About Melissa H Olken Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MELISSA H OLKEN MD, PHD (NPI 1265540611) is an individual internal medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301054011) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Melissa H Olken Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Melissa Olken reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kalamazoo, MI 49048
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Ascension Borgess Hospital
- 247 clinicians in this Medicare group
Kalamazoo, MI 49008
- Reassigned Medicare billing, Michigan enrollment
- 151 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 48105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 Melissa Olken's NPI number?
The NPI number for Melissa Olken is 1265540611. It was assigned to this individual provider in the NPPES registry on August 27, 2006.
Where is Melissa Olken located?
Melissa Olken practices at 2215 Fuller Rd, Ann Arbor, MI 48105. The listed phone number is (734) 769-7100.
What is Melissa Olken's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Melissa Olken enrolled in Medicare?
Yes. Melissa Olken is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Melissa Olken's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Olken reassigns Medicare benefits to 2 organizations: Beacon Kalamazoo Inc (Kalamazoo, MI) and Western Michigan University School Of Medicine (Kalamazoo, 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 Melissa Olken'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 Melissa Olken was last updated on March 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Melissa H Olken, MD, PHD · NPI 1265540611
Internal Medicine physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since August 27, 2006.
## Identity
- **NPI:** 1265540611 (Entity type: Individual)
- **Enumerated:** August 27, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 4301054011 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 2215 FULLER RD, Ann Arbor, MI 48105-2303
- **Phone:** (734) 769-7100
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Beacon Kalamazoo Inc (NPI 1093749848, Kalamazoo, MI); Western Michigan University School Of Medicine (NPI 1316212343, Kalamazoo, MI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 16, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1265540611) · Data from the CMS NPPES public registry.