PENNAPA S CHAN MD
NPI 1457405128
Internal Medicine - Endocrinology, Diabetes & Metabolism in Madison, WI
About Pennapa S Chan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PENNAPA S CHAN MD (NPI 1457405128) is an individual endocrinology, diabetes & metabolism provider in Madison, Wisconsin, licensed in Wisconsin (41501-020) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Meriter, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 2
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
Pennapa S Chan 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
2Medicare enrollment records show Pennapa Chan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 clinicians in this Medicare group
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Unitypoint Health - Meriter
Acute Care Hospitals · Madison, WIUniversity Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53717 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.
MADISON, WI 53717
MADISON, WI 53717
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 Pennapa Chan's NPI number?
The NPI number for Pennapa Chan is 1457405128. It was assigned to this individual provider in the NPPES registry on January 22, 2007.
Where is Pennapa Chan located?
Pennapa Chan practices at 451 Junction Rd, Madison, WI 53717. The listed phone number is (608) 263-5010.
What is Pennapa Chan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Pennapa Chan enrolled in Medicare?
Yes. Pennapa Chan 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 Pennapa Chan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Pennapa Chan reassigns Medicare benefits to 2 organizations: University Of Wisconsin Medical Foundation, Inc (Middleton, WI) and Aurora Medical Group, Inc. (West Allis, WI). 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 Pennapa Chan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Pennapa Chan accept?
Health plans from Group Health Cooperative-SCW and Providence Health Plan list Pennapa Chan 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 Pennapa Chan affiliated with any hospitals?
According to CMS data, Pennapa Chan is affiliated with Unitypoint Health - Meriter and University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Pennapa Chan was last updated on December 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.
# Pennapa S Chan, MD · NPI 1457405128
Endocrinology, Diabetes & Metabolism physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since January 22, 2007.
## Identity
- **NPI:** 1457405128 (Entity type: Individual)
- **Enumerated:** January 22, 2007
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** 41501-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 451 JUNCTION RD, Madison, WI 53717-2656
- **Phone:** (608) 263-5010 · **Fax:** (608) 265-7519
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI); Aurora Medical Group, Inc. (NPI 1457592735, West Allis, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Southern Illinois University School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** December 16, 2024
- **Other identifiers:** Medicaid 34390100 (WI); Other 60653 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1457405128) · Data from the CMS NPPES public registry.