Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Marc Gonchar, MD

Individual provider Internal Medicine Physician · NPI 1437126869

Marc Gonchar, MD practises Internal Medicine in Seattle, Washington. Graduated from Icahn School of Medicine at Mount Sinai in 1998, 28 years ago. Practices with The Polyclinic PLLC, a 366-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
28
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

904 7th Ave
Seattle, WA 98104-1132 Not confirmed with CMS for 14 years — call before visiting
Phone: (206) 329-1760
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD00039437 (WA)

Record details

NPI number1437126869
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 3, 2006
Last updated in NPPESMay 16, 2012

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1998 (28 years in practice)
Group practice The Polyclinic Pllc — 366 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients91
Services billed 167 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at The Polyclinic PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 366 clinicians in the practice; 12 are shown here.

Other providers in Seattle