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

Individual provider Anesthesiology Physician · NPI 1184627564

Dr. William James Ritchie, MD is an Anesthesiology in Kirkland, Washington. Qualified in 1994, 32 years ago. Practices with Matrix Anesthesia, Ps, a 87-clinician group and accepts Medicare assignment. Licensed in New Mexico and Washington.

Years since qualifying
32
Licensed in
NM, WA
In the registry since
2005
Specialties on file
2
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

12040 NE 128th St # 69
Kirkland, WA 98034-3013
Phone: (425) 899-3455
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD60636225 (WA)
Anesthesiology Physician Taxonomy 207L00000X · Licence 2003-0470 (NM)

Record details

NPI number1184627564
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 31, 2005
Last updated in NPPESNovember 26, 2018
Mailing address12040 Ne 128th St # 69, Kirkland, WA 98034-3013

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Group practice Matrix Anesthesia, Ps — 87 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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