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

Dr. Mariel Liane Balboa, DO

Individual provider Family Medicine Physician · NPI 1326676248

Dr. Mariel Liane Balboa, DO is a Family Practice in Mill Creek, Washington. Qualified in 2020, 6 years ago. Practices with Optum Care Washington PLLC, a 685-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
6
Licensed in
WA
In the registry since
2020
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 →

Practice location Address checks out

15418 Main St Ste 200
Mill Creek, WA 98012-9030
Phone: (425) 225-8000
Fax: (142) 522-5802
Show map & directions

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

Additional practice locations (1)

  • 9709 3rd Ave Ne, Seattle, WA 98115-2062 — (206) 525-5777

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence OP61416306 (WA)

Record details

NPI number1326676248
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 27, 2020
Last updated in NPPESMay 8, 2026
Certification dateMay 8, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Optum Care Washington Pllc — 685 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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