William C Chapin, MD - Medicare Endocrinology in Portland, OR

William C Chapin, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Portland, Oregon. He went to Medical College Of Pennsylvania and graduated in 1998 and has 26 years of diverse experience with area of expertise as Endocrinology. He is a member of the group practice Providence Health And Services Oregon and his current practice location is 10101 Se Main St, Suite 1001, Portland, Oregon. You can reach out to his office (for appointments etc.) via phone at (503) 255-3404.

William C Chapin is licensed to practice in Oregon (license number MD22016) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1083653679.

Contact Information

William C Chapin, MD
10101 Se Main St, Suite 1001,
Portland, OR 97216-2455
(503) 255-3404
Not Available

Map and Direction




Physician's Profile

Full NameWilliam C Chapin
GenderMale
SpecialityEndocrinology
Experience26 Years
Location10101 Se Main St, Portland, Oregon
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • William C Chapin attended and graduated from Medical College Of Pennsylvania in 1998
  NPI Data:
  • NPI Number: 1083653679
  • Provider Enumeration Date: 06/06/2006
  • Last Update Date: 12/27/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 6406040682
  • Enrollment ID: I20101102000090

Medical Identifiers

Medical identifiers for William C Chapin such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1083653679NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine MD22016 (Oregon)Secondary
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism MD22016 (Oregon)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Providence St Vincent Medical CenterPortland, ORHospital
Providence Portland Medical CenterPortland, ORHospital
Adventist Health TillamookTillamook, ORHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Providence Health And Services Oregon06481836081344

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. William C Chapin allows following entities to bill medicare on his behalf.
Entity NameProvidence Health & Services Oregon
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023488343
PECOS PAC ID: 0648183608
Enrollment ID: O20031106000652
Entity NameProvidence Health & Services Oregon
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003991845
PECOS PAC ID: 5395656284
Enrollment ID: O20031113000626
Entity NameProvidence Health & Services Oregon
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1114015971
PECOS PAC ID: 9335057447
Enrollment ID: O20031117000153
Entity NamePortland Adventist Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215910302
PECOS PAC ID: 7012827876
Enrollment ID: O20040226000131

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. William C Chapin is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
William C Chapin, MD
Po Box 92900,
Portland, OR 97292-0900

Ph: (503) 255-3404
William C Chapin, MD
10101 Se Main St, Suite 1001,
Portland, OR 97216-2455

Ph: (503) 255-3404

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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