Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Michelle M Happenny, DO

Individual provider Family Medicine Physician · NPI 1366833147

Michelle M Happenny, DO is registered under Family Practice in Seattle, Washington. Graduated from Western University of Health Sciences College of Dental Med in 2017, 9 years ago. Practices with Swedish Health Services, a 384-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
9
Trained at
Western University of Health Sciences College of Dental Med
Licensed in
WA
In the registry since
2015
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

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Practice location Address checks out

1600 E Jefferson St Ste 510
Seattle, WA 98122-5648
Phone: (206) 320-4888
Fax: (206) 320-4203
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence OP60971132 (WA)

Record details

NPI number1366833147
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedFebruary 14, 2015
Last updated in NPPESSeptember 21, 2020
Certification dateSeptember 21, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolWESTERN UNIVERSITY OF HEALTH SCIENCES COLLEGE OF DENTAL MED
Graduated 2017 (9 years in practice)
Group practice Swedish Health Services — 384 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients170
Services billed 1,167 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Swedish Edmonds Hospital Hospital · Edmonds, WA
  • Swedish Medical Center Hospital · Seattle, WA

Colleagues at Swedish Health Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 384 clinicians in the practice; 12 are shown here.

Other providers in Seattle