WILLIAM C. CHAPIN MD
NPI 1083653679
Internal Medicine - Endocrinology, Diabetes & Metabolism in Portland, OR
About William C. Chapin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM C. CHAPIN MD (NPI 1083653679) is an individual endocrinology, diabetes & metabolism provider in Portland, Oregon, licensed in Oregon (MD22016) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Providence St Vincent Medical Center, and maintains a secondary practice location in Portland.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William C. Chapin 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.
Areas of Expertise CMS Part B claims 6
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence St Vincent Medical Center
Acute Care Hospitals · Portland, OROhsu Hospital And Clinics
Acute Care Hospitals · Portland, ORProvidence Newberg Medical Center
Acute Care Hospitals · Newberg, ORProvidence Willamette Falls Medical Center
Acute Care Hospitals · Oregon City, ORProvidence Portland Medical Center
Acute Care Hospitals · Portland, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97213 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.
Referred Medical Equipment & Supplies CMS DME claims 7
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 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORTLAND, OR 97213
PORTLAND, OR 97213
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 William Chapin's NPI number?
The NPI number for William Chapin is 1083653679. It was assigned to this individual provider in the NPPES registry on June 6, 2006.
Where is William Chapin located?
William Chapin practices at 4805 NE Glisan St Ste 6n40, Portland, OR 97213. The listed phone number is (503) 215-6601.
What is William Chapin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is William Chapin enrolled in Medicare?
Yes. William Chapin 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.
What insurance does William Chapin accept?
Health plans from Providence Health Plan list William Chapin 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 William Chapin affiliated with any hospitals?
According to CMS data, William Chapin is affiliated with Providence St Vincent Medical Center, Ohsu Hospital And Clinics, Providence Newberg Medical Center, Providence Willamette Falls Medical Center and Providence Portland Medical Center.
When was this NPI record last updated?
The NPPES record for William Chapin was last updated on May 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
