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

Dr. Alexander Si Nguyen, MD

Individual provider Anesthesiology Physician · NPI 1487186581

Dr. Alexander Si Nguyen, MD is an Anesthesiology in Seattle, Washington. Qualified in 2017, 9 years ago. Practices with Spectrum Health Primary Care Partners, a 2,303-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and New York.

Years since qualifying
9
Licensed in
IL, NY
In the registry since
2017
Specialties on file
3
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

925 Seneca Street Mail Stop H8-GME
Seattle, WA 98101
Phone: (206) 583-6079
Show map & directions

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

Additional practice locations (1)

  • 4440 W 95th St Dept Of, Oak Lawn, IL 60453-2600 — (708) 684-8000

Specialties & licences

Pain Medicine (Anesthesiology) Physician (primary) Taxonomy 207LP2900X · Licence 317013-01 (NY)
Anesthesiology Physician Taxonomy 207L00000X · Licence 317013-01 (NY)
Anesthesiology Physician Taxonomy 207L00000X · Licence 036176521 (IL)

Record details

NPI number1487186581
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2017
Last updated in NPPESAugust 21, 2025
Certification dateAugust 21, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Spectrum Health Primary Care Partners — 2303 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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