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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GWEN MARCUS MD
NPI 1760424816
Pediatrics - Neonatal-Perinatal Medicine in Seattle, WA

Active since June 12, 2006
9635 17TH AVE SW, SEATTLE, WA 98106(206) 763-5057(206) 763-5241 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Gwen Marcus Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GWEN MARCUS MD (NPI 1760424816) is an individual neonatal-perinatal medicine provider in Seattle, Washington, licensed in Washington (MD00038714) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1760424816
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameGWEN MARCUSCredential: MD
Location Address9635 17TH AVE SWSeattle, WA 98106-2712
Mailing AddressPo Box 34936, Dept # 5006Seattle, WA 98124-1936 · (206) 439-2988 · Fax (206) 431-3939
Phone(206) 763-5057
Fax(206) 763-5241
Sole ProprietorNo
Enumeration DateJune 12, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1760424816 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in WA · MD00038714
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
9635 17TH AVE SW, Seattle, WA 98106
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Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MONINA DAGUIO
Family Medicine
9635 17TH AVE SW
SEATTLE, WA 98106
King County (206) 763-5057
LISA M BRITTON II MD
Family Medicine
9635 17TH AVE SW
SEATTLE, WA 98106
King County (206) 763-5057
HIGHLINE MEDICAL GROUP
Family Medicine
9635 17TH AVE SW
SEATTLE, WA 98106
King County (206) 763-5057
PATRICIA BURKE PA-C
Physician Assistant
9635 17TH AVE SW
SEATTLE, WA 98106
King County (206) 763-5057
LISA L SFERRA MD
Family Medicine
9635 17TH AVE SW
SEATTLE, WA 98106
King County (206) 763-5057

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gwen Marcus's NPI number?

The NPI number for Gwen Marcus is 1760424816. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Where is Gwen Marcus located?

Gwen Marcus practices at 9635 17th Ave SW, Seattle, WA 98106. The listed phone number is (206) 763-5057.

What is Gwen Marcus's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

When was this NPI record last updated?

The NPPES record for Gwen Marcus was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.