Michelle M. Happenny, DO
Family Medicine Physician · Seattle, WA
Michelle M. Happenny, DO is a family medicine physician with a practice address in Seattle, Washington, and NPI 1366833147, issued on Feb 14, 2015. Check the license (Washington OP60971132, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Michelle M. Happenny
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OP60971132 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1600 E Jefferson St Ste 510, Seattle, WA 98122
- Phone
- (206) 320-4888
- Enumerated
- Feb 14, 2015
- Record last updated
- Sep 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (206) 320-4203
- Medicaid ID
- 1366833147 WA
- Medicare enrollment
- Enrolled (PECOS I20200827003425); accepts Medicare assignment
- Medical or professional school
- Western University Of Health Sciences College Of Dental Med, 2017
- Telehealth
- Offers telehealth (CMS)
- 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 Ste 510
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michelle M. Happenny in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP60971132Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average family medicine physician in 2024
1,594 Medicare Part D claims for 273 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 53 claims were for opioids.
Most prescribed
- Atorvastatin Calcium100 claims
- Amlodipine Besylate87 claims
- Gabapentin68 claims
- Levothyroxine Sodium60 claims
- Rosuvastatin Calcium58 claims
- Lisinopril46 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 3 group practices
- Select Outpatient Services IncGlenview, IL
- Select Rehabilitation, LLCGlenview, IL
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michelle M. Happenny among 5,534 family medicine physician records in Washington
Michelle M. Happenny, DO 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 2015, is newer than 73% of them.
- NPI issued2015 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2017 · 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
- Philip Capp, MDSeattle, WA 981221427161744
- Sharon Grayson, MDSeattle, WA 981221700806734
- Anne Hirsch, ARNPSeattle, WA 981221710972666
- Jane King, M.D.Seattle, WA 981221518956226
- Sarah Lesko, M.D.Seattle, WA 981221447220439
- Monica Mayhill, MDSeattle, WA 981221902858061
- Robert McIntyre, M.D.Seattle, WA 981221689770216
Common questions
What is Michelle M. Happenny, DO's NPI number?
Michelle M. Happenny, DO's National Provider Identifier (NPI) is 1366833147, issued on Feb 14, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Michelle M. Happenny, DO located?
The NPPES record lists a practice address at 1600 E Jefferson St Ste 510, Seattle, WA, 98122. Phone: (206) 320-4888. Providers update this record themselves, so call before visiting.
How can I verify Michelle M. Happenny, DO's license?
NPPES lists Washington license number OP60971132, 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 Michelle M. Happenny, DO prescribe under Medicare Part D?
In 2024, Michelle M. Happenny, DO had 1,594 Medicare Part D claims for 273 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.