Clark O Parrish, MD - Medicare Internal Medicine in Bellingham, WA

Clark O Parrish, MD is a medicare enrolled "Internal Medicine" physician in Bellingham, Washington. He went to University Of Oklahoma College Of Medicine and graduated in 1978 and has 46 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Peacehealth and his current practice location is 4545 Cordata Pkwy, Bellingham, Washington. You can reach out to his office (for appointments etc.) via phone at (360) 738-2200.

Clark O Parrish is licensed to practice in Washington (license number MD00024849) 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 1891791232.

Contact Information

Clark O Parrish, MD
4545 Cordata Pkwy,
Bellingham, WA 98226-7123
(360) 738-2200
(360) 715-2486

Map and Direction




Physician's Profile

Full NameClark O Parrish
GenderMale
SpecialityInternal Medicine
Experience46 Years
Location4545 Cordata Pkwy, Bellingham, Washington
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:
  • Clark O Parrish attended and graduated from University Of Oklahoma College Of Medicine in 1978
  NPI Data:
  • NPI Number: 1891791232
  • Provider Enumeration Date: 06/21/2005
  • Last Update Date: 03/29/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 3971672262
  • Enrollment ID: I20080512000767

Medical Identifiers

Medical identifiers for Clark O Parrish such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891791232NPI-NPPES
4587184OtherWAAETNA
1032549MedicaidWA
12304OtherWAREGENCE
0230044OtherWAL&I AND CRIME VICTIMS
1891791232MedicaidWA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD188136 (Oregon)Secondary
207R00000XInternal Medicine MD00024849 (Washington)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Peacehealth Peace Island Medical CenterFriday harbor, WAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Peacehealth9537073960265

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. Clark O Parrish allows following entities to bill medicare on his behalf.
Entity NameSouth Sound Inpatient Physicians Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023285756
PECOS PAC ID: 5991618738
Enrollment ID: O20031107000668
Entity NamePeacehealth
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356309553
PECOS PAC ID: 9537073960
Enrollment ID: O20031118001062
Entity NameCogent Healthcare Of Washington, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861430522
PECOS PAC ID: 2062306350
Enrollment ID: O20040209000839
Entity NamePeacehealth Peace Island Medical Center
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1487917233
PECOS PAC ID: 9335391044
Enrollment ID: O20121204000225
Entity NamePeacehealth Peace Island Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508129842
PECOS PAC ID: 9335391044
Enrollment ID: O20130122000273
Entity NamePeacehealth Medical Group - Sedro Woolley
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407283179
PECOS PAC ID: 1456584036
Enrollment ID: O20140506001293

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. Clark O Parrish 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
Clark O Parrish, MD
Po Box 5096,
Bellingham, WA 98227-5096

Ph: (360) 738-2200
Clark O Parrish, MD
4545 Cordata Pkwy,
Bellingham, WA 98226-7123

Ph: (360) 738-2200

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.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.