John B. Holroyd, M.D.
Internal Medicine Physician · Bellingham, WA
John B. Holroyd, M.D. is an internal medicine physician with a practice address in Bellingham, Washington, and NPI 1811996234, issued on Jul 18, 2005. Check the license (Washington MD00035433, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- John B. Holroyd
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00035433 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4545 Cordata Pkwy, Bellingham, WA 98226
- Phone
- (360) 738-2200
- Enumerated
- Jul 18, 2005
- Record last updated
- Sep 30, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (360) 752-5682
- Medicaid ID
- 1811996234 WA
- Medicare enrollment
- Enrolled (PECOS I20080514000813); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 4545 Cordata Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John B. Holroyd in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00035433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
518 Medicare Part D claims for 133 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Metoprolol Succinate36 claims
- Torsemide36 claims
- Eliquis31 claims
- Atorvastatin Calcium26 claims
- Jardiance21 claims
- Cefdinir18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- South Sound Inpatient Physicians PLLCBellingham, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John B. Holroyd among 3,079 internal medicine physician records in Washington
John B. Holroyd, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1995 · median 2006 among the 1,852 with a school on file
- Record last updated2010 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
84 internal medicine physician records list a practice address in Bellingham
They are 84 of the 5,172 NPPES records with a practice address in Bellingham, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Bellingham → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shari Cummins, M.D.Bellingham, WA 982261942290820
- Charles Gargano, M.D.Bellingham, WA 982261689663288
- Michael Geist, M.D.Bellingham, WA 982261306845722
- Martha Gillham, M.D.Bellingham, WA 982261275532699
- Robert Hoffmeister, M.D.Bellingham, WA 982261336145754
- Dawn Hutchison, D.O.Bellingham, WA 982261285623249
- Pamela Laughlin, M.D.Bellingham, WA 982261790781151
- David McKinney, M.D.Bellingham, WA 982261558367532
Common questions
What is John B. Holroyd, M.D.'s NPI number?
John B. Holroyd, M.D.'s National Provider Identifier (NPI) is 1811996234, issued on Jul 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John B. Holroyd, M.D. located?
The NPPES record lists a practice address at 4545 Cordata Pkwy, Bellingham, WA, 98226. Phone: (360) 738-2200. Providers update this record themselves, so call before visiting.
How can I verify John B. Holroyd, M.D.'s license?
NPPES lists Washington license number MD00035433, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John B. Holroyd, M.D. prescribe under Medicare Part D?
In 2024, John B. Holroyd, M.D. had 518 Medicare Part D claims for 133 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.