ROY M. BAK M.D.
NPI 1225046352
Anesthesiology in Spokane, WA

Q: What is Roy Bak's NPI number?

The NPI number for Roy Bak is 1225046352. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Q: What is Roy Bak's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Roy Bak was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 04, 2006PECOS EnrolledAccepts Medicare Assignment

101 W 8TH AVE, SPOKANE, WA 99204(509) 474-3181 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 14, 2026, Sep 18, 2024, Dec 14, 2023 and 3 more (6 updates tracked since 2020).

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About Roy M. Bak M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROY M. BAK M.D. (NPI 1225046352) is an individual anesthesiology provider in Spokane, Washington, licensed in California (A79654) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1225046352

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameROY M. BAKCredential: M.D.

Location Address101 W 8TH AVESpokane, WA 99204-2307

Mailing Address101 W 8th AveSpokane, WA 99204-2307 · (509) 474-3181

Phone(509) 474-3181

Sole ProprietorNo

Medical School CMSUniversity Of Washington School Of MedicineGraduated 1997

Enumeration DateAugust 4, 2006

Last NPPES UpdateJanuary 14, 20266 updates tracked since enumeration

NPPES CertifiedJanuary 14, 2026

✔ NPI 1225046352 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

Licenses✔ Licensed in CA · A79654✔ Licensed in AK · 100064✔ Licensed in WI · 4127-320✔ Licensed in WA · MD61096343✔ Licensed in IL · 036-167022

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

101 W 8TH AVE, Spokane, WA 99204

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Secondary Practice Locations 2

Location 11775 Dempster StPark Ridge, IL 60068-1143 · Phone (847) 723-2210 · Fax (847) 723-3532

Location 23626 Ruffin RdSan Diego, CA 92123-1810 · Phone (858) 565-9666 · Fax (858) 565-9441

Other Identifiers 2

Medicaid00A796540CA

Other00A796540CA · Blue Shield Of Ca

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Roy M. Bak M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7719032135

PECOS Enrollment IDI20210219000605, I20231127001332, I20240321003716, I20250611003918

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

18 services18 patients

Insertion of artery tube for blood sampling or infusion through skin 36620

This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.

12 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Advocate Christ Hospital & Medical Center

Acute Care Hospitals · Oak Lawn, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140208

Location4440 W 95th StreetOak Lawn, IL 60453 · Cook County

Emergency services Birthing friendly

Spectrum Health

Acute Care Hospitals · Grand Rapids, MI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230038

Location100 Michigan St NEGrand Rapids, MI 49503 · Kent County

Emergency services Birthing friendly

Legacy Emanuel Medical Center

Acute Care Hospitals · Portland, OR

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number380007

Location2801 N Gantenbein AvenuePortland, OR 97227 · Multnomah County

Emergency services Birthing friendly

Prov Sacred Hrt Med Ctr & Childs Hosp.

Acute Care Hospitals · Spokane, WA

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number500054

Location101 West 8th AvenueSpokane, WA 99204 · Spokane County

Emergency services Birthing friendly

Froedtert South Inc.

Acute Care Hospitals · Pleasant Prairie, WI

1/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number520021

Location9555 76th StPleasant Prairie, WI 53158 · Kenosha County

Emergency services

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHELSEA POSENJAK

Nurse Anesthetist, Certified Registered

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (509) 474-3131

CAITLIN KLAMPER MD

Psychiatry & Neurology (Psychiatry)

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (509) 474-4744

DR. SARAH N PETERSON MD

Radiology (Diagnostic Radiology)

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (509) 474-3020

MICHAEL GROSS MD

Anesthesiology

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (509) 474-3181

LAURA DARLENE DEWALD DO

Internal Medicine

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (509) 626-9900

PAUL C THORNE MD

Surgery (Pediatric Surgery)

101 W 8TH AVE, STE 100
SPOKANE, WA 99204

Spokane County (509) 474-5445

DR. BROOKS THOMAS LASELLE M.D.

Emergency Medicine

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (253) 217-3832

MR. MICHAEL CLIFFORD BLANCH R.PH.

Pharmacist

101 W 8TH AVE
SPOKANE, WA 99204

Spokane County (509) 474-3088

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Roy Bak's NPI number?

The NPI number for Roy Bak is 1225046352. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Where is Roy Bak located?

Roy Bak practices at 101 W 8th Ave, Spokane, WA 99204. The listed phone number is (509) 474-3181.

What is Roy Bak's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Roy Bak enrolled in Medicare?

Yes. Roy Bak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Roy Bak accept?

Health plans from Blue Cross and Blue Shield of Texas and Premera Blue Cross Blue Shield of Alaska list Roy Bak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Roy Bak affiliated with any hospitals?

According to CMS data, Roy Bak is affiliated with Advocate Christ Hospital & Medical Center, Spectrum Health, Legacy Emanuel Medical Center, Prov Sacred Hrt Med Ctr & Childs Hosp. and Froedtert South Inc..

When was this NPI record last updated?

The NPPES record for Roy Bak was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.