Monica L. Mayhill, MD
Family Medicine Physician · Seattle, WA
Monica L. Mayhill, MD is a family medicine physician with a practice address in Seattle, Washington, and NPI 1902858061, issued on May 17, 2006. Check the license (Washington MD00045345, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Monica L. Mayhill
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD00045345 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1600 E Jefferson St, Seattle, WA 98122
- Phone
- (206) 320-4888
- Enumerated
- May 17, 2006
- Record last updated
- Oct 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (206) 320-4203
- Medicare enrollment
- Enrolled (PECOS I20250219000642); 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 1600 E Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Monica L. Mayhill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00045345Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average family medicine physician in 2024
1,774 Medicare Part D claims for 172 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 26 claims were for opioids.
Most prescribed
- Amlodipine Besylate74 claims
- Levothyroxine Sodium64 claims
- Losartan Potassium61 claims
- Atorvastatin Calcium59 claims
- Sertraline Hcl59 claims
- Albuterol Sulfate Hfa50 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.
Industry payments in 2024: $34.13
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospitals and group practices
- Grays Harbor Community HospitalAberdeen, WA · Acute Care Hospitals3 of 5 stars
- Peacehealth Networks ON Demand LLCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Monica L. Mayhill among 5,534 family medicine physician records in Washington
Monica L. Mayhill, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2003 · median 2009 among the 3,294 with a school on file
- Record last updated2020 · 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
- William Alto, MD, MPHSeattle, WA 981221962478073
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- Anne Hirsch, ARNPSeattle, WA 981221710972666
- Jane King, M.D.Seattle, WA 981221518956226
- Sarah Lesko, M.D.Seattle, WA 981221447220439
- Robert McIntyre, M.D.Seattle, WA 981221689770216
- Tyler Munson, DOSeattle, WA 981221154383396
Common questions
What is Monica L. Mayhill, MD's NPI number?
Monica L. Mayhill, MD's National Provider Identifier (NPI) is 1902858061, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Monica L. Mayhill, MD located?
The NPPES record lists a practice address at 1600 E Jefferson St, Seattle, WA, 98122. Phone: (206) 320-4888. Providers update this record themselves, so call before visiting.
How can I verify Monica L. Mayhill, MD's license?
NPPES lists Washington license number MD00045345, 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 Monica L. Mayhill, MD prescribe under Medicare Part D?
In 2024, Monica L. Mayhill, MD had 1,774 Medicare Part D claims for 172 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.