NPPES file of Aug 9, 2026

Hakan Kaya, M.D.

Medical Oncology Physician · Spokane, WA

Hakan Kaya, M.D. is a medical oncology physician with a practice address in Spokane, Washington, and NPI 1255320974, issued on Oct 14, 2005. Check the license (Washington MD00040186, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255320974
Name
Hakan Kaya
Credential
M.D.
Primary taxonomy
Medical Oncology Physician 207RX0202X
License number
MD00040186 WA
Self-reported in NPPES; status is on the state search
Practice location
601 S Sherman St, Spokane, WA 99202
Phone
(509) 228-1000
Enumerated
Oct 14, 2005
Record last updated
Mar 27, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(509) 252-9300
Medicaid IDs
8384588 WA
806144800 ID
Medicare enrollment
Enrolled (PECOS I20040428000847); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest medical oncology physician records → All 183 in Washington → Look up another NPI →

Also registered at 601 S Sherman St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Janet Chestnut, M.D.Hematology & Oncology Physician1316082605
  2. April Davis, RDRegistered Dietitian1639494453
  3. Mei Dong, M.D., PH.D.Hematology & Oncology Physician1790960334
  4. Marsha Fink, M.D.Hematology & Oncology Physician1801892419
  5. Andrew Francis, M.D.Surgical Oncology Physician1922535509
  6. Heather Gabbert, MS, RD, CD, LDRegistered Dietitian1053646786

Verify Hakan Kaya in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD00040186    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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90% more Medicare Part D claims than the average medical oncology physician in 2024

1,339 Medicare Part D claims for 170 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 71 claims were for opioids.

  1. Hakan Kaya1,339
  2. Specialty average703

Most prescribed

  1. Acyclovir224 claims
  2. Brukinsa87 claims
  3. Hydroxyurea83 claims
  4. Sulfamethoxazole-Trimethoprim76 claims
  5. Allopurinol54 claims
  6. Pomalyst50 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $420,032.02

324 payments; by number, the most common kind was travel and lodging; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Hakan Kaya$420,032
  2. Specialty average$11,773

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Cancer Care Northwest Centers P SSpokane, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hakan Kaya among 183 medical oncology physician records in Washington

Hakan Kaya, M.D. is one of 183 medical oncology physician records with a practice address in Washington. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 88% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1993 · median 1998 among the 112 with a school on file
  • Record last updated2017 · 70% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Oncology Physician providers in Washington

There are 183 medical oncology physician records in Washington.

All 183 in Washington → Every provider in Spokane → Medical Oncology Physician nationwide →

The 8 medical oncology physician records with the nearest ZIP codes

  1. Robert Gersh, M.D.Spokane, WA 992021730175696
  2. Joni Nichols, M.D.Spokane, WA 992021861481079
  3. Peter Schlegel, M.D.Spokane, WA 992021891785838
  4. Nicole Lee, MDSpokane, WA 992041740287036
  5. Mirela Andrei, M.D.Spokane, WA 992081578875225
  6. Elizabeth Gunderson, MDSpokane Valley, WA 992161053401745
  7. Kristine Rinn, MDSpokane Valley, WA 992161174607899
  8. Kawal Chester, M.D.Spokane, WA 992181619963600

Common questions

What is Hakan Kaya, M.D.'s NPI number?

Hakan Kaya, M.D.'s National Provider Identifier (NPI) is 1255320974, issued on Oct 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Hakan Kaya, M.D. located?

The NPPES record lists a practice address at 601 S Sherman St, Spokane, WA, 99202. Phone: (509) 228-1000. Providers update this record themselves, so call before visiting.

How can I verify Hakan Kaya, M.D.'s license?

NPPES lists Washington license number MD00040186, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Hakan Kaya, M.D. prescribe under Medicare Part D?

In 2024, Hakan Kaya, M.D. had 1,339 Medicare Part D claims for 170 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.