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

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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