William Earl Maes, MD
Family Medicine Physician · Seattle, WA
William Earl Maes, MD is a family medicine physician with a practice address in Seattle, Washington, and NPI 1114488525, issued on Mar 28, 2019. Check the license (Washington MD61476823, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- William Earl Maes
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD61476823 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9245 Rainier Ave S, Seattle, WA 98118
- Phone
- (206) 722-8444
- Enumerated
- Mar 28, 2019
- Record last updated
- Mar 17, 2026
- Fax
- (206) 721-6310
- Medicare enrollment
- Enrolled (PECOS I20231218003486); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 9245 Rainier Ave S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Chelsea Bajet, PAPhysician Assistant1750005815
- Brandi Basket, D.O.Family Medicine Physician1437478070
- Jacquelyn Baumann, CNM, ARNPAdvanced Practice Midwife1942813761
- Athena Bautista, D.D.S.Dentist1518350560
Verify William Earl Maes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61476823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average family medicine physician in 2024
876 Medicare Part D claims for 152 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium81 claims
- Losartan Potassium42 claims
- Lisinopril38 claims
- Amlodipine Besylate35 claims
- Gabapentin32 claims
- Tamsulosin Hcl25 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
- Neighborcare HealthSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Earl Maes among 5,534 family medicine physician records in Washington
William Earl Maes, MD is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2019 · median 2009 among the 3,294 with a school on file
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
871 family medicine physician records list a practice address in Seattle
They are 871 of the 41,956 NPPES records with a practice address in Seattle, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Seattle → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Quynh Bui, M.D.Seattle, WA 981181639286388
- Dennis Haack, M.D.Seattle, WA 981181417052648
- Kimberley Herner, MDSeattle, WA 981181740202514
- Kristen Kelly, MDSeattle, WA 981181417057407
- Jinna Kim, MDSeattle, WA 981181487764866
- Ling Lee, M.D.Seattle, WA 981181669489928
- Jeffrey Lee, MDSeattle, WA 981181558471987
- James Park, MDSeattle, WA 981181285647925
Common questions
What is William Earl Maes, MD's NPI number?
William Earl Maes, MD's National Provider Identifier (NPI) is 1114488525, issued on Mar 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is William Earl Maes, MD located?
The NPPES record lists a practice address at 9245 Rainier Ave S, Seattle, WA, 98118. Phone: (206) 722-8444. Providers update this record themselves, so call before visiting.
How can I verify William Earl Maes, MD's license?
NPPES lists Washington license number MD61476823, 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 William Earl Maes, MD prescribe under Medicare Part D?
In 2024, William Earl Maes, MD had 876 Medicare Part D claims for 152 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.