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

Nathaniel Eric Siev, MD

Individual provider Anesthesiology Physician · NPI 1023515269

Nathaniel Eric Siev, MD is an Anesthesiology in Tacoma, Washington. Qualified in 2018, 8 years ago. Practices with Franciscan Medical Group, a 1,417-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
8
Licensed in
WA
In the registry since
2018
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

1717 S J St
Tacoma, WA 98405-4933
Phone: (253) 426-4101
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1100 9th Ave, Seattle, WA 98101-2756 — (206) 223-6600

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD61218481 (WA)

Record details

NPI number1023515269
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 12, 2018
Last updated in NPPESDecember 30, 2025
Certification dateDecember 30, 2025
Mailing address1717 S J St, Tacoma, WA 98405-4933

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Franciscan Medical Group — 1417 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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