Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Roy M. Bak, MD

Individual provider Anesthesiology Physician · NPI 1225046352

Roy M. Bak, MD practises Anesthesiology in Spokane, Washington. Graduated from University of Washington School of Medicine in 1997, 29 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Alaska, California, Illinois and Washington and 1 more.

Years since qualifying
29
Trained at
University of Washington School of Medicine
Licensed in
AK, CA, IL, WA, WI
In the registry since
2006
Specialties on file
5
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

101 W 8th Ave
Spokane, WA 99204-2307
Phone: (509) 474-3181
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Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 3626 Ruffin Rd, San Diego, CA 92123-1810 — (858) 565-9666
  • 1775 Dempster St, Park Ridge, IL 60068-1143 — (847) 723-2210

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A79654 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence 100064 (AK)
Anesthesiology Physician Taxonomy 207L00000X · Licence 4127-320 (WI)
Anesthesiology Physician Taxonomy 207L00000X · Licence MD61096343 (WA)
Anesthesiology Physician Taxonomy 207L00000X · Licence 036-167022 (IL)

Record details

NPI number1225046352
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 4, 2006
Last updated in NPPESJanuary 14, 2026
Certification dateJanuary 14, 2026

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients112
Services billed 132 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $22 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Advocate Christ Hospital & Medical Center Hospital · Oak Lawn, IL · listed as Advocate Christ Medical Center
  • Spectrum Health Hospital · Grand Rapids, MI · listed as Spectrum Health Hospital
  • Legacy Emanuel Medical Center Hospital · Portland, OR
  • Legacy Meridian Park Medical Center Hospital · Tualatin, OR
  • Prov Sacred Hrt Med Ctr & Childs Hosp. Hospital · Spokane, WA

Colleagues at Advocate Health and Hospitals Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3079 clinicians in the practice; 12 are shown here.

Other providers in Spokane