Stephen Hasler Thatcher, M.D.
Radiation Oncology Physician · Spokane, WA
Stephen Hasler Thatcher, M.D. is a radiation oncology physician with a practice address in Spokane, Washington, and NPI 1851628077, issued on Nov 9, 2009. Check the license (Washington MD60597209, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Stephen Hasler Thatcher
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- MD60597209 WA
M-13076 ID
Self-reported in NPPES; status is on the state search - Practice location
- 101 W 8TH Ave, Spokane, WA 99204
- Phone
- (509) 228-1000
- Enumerated
- Nov 9, 2009
- Record last updated
- Mar 19, 2026
- Fax
- (509) 252-9300
- Medicare enrollment
- Enrolled (PECOS I20160219002092); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 198 in Washington → Look up another NPI →
Also registered at 101 W 8TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Isaac AanensonCertified Registered Nurse Anesthetist1821535972
- Alexandra AchenbachStudent in an Organized Health Care Education/Training Program1740983451
- Roger Acuncius, RPHPharmacotherapy Pharmacist1477620763
- James Adams, NPNurse Practitioner1245828227
- Michael Adams, DOStudent in an Organized Health Care Education/Training Program1144022963
- Amanda Affleck, CRNACertified Registered Nurse Anesthetist1073773057
Verify Stephen Hasler Thatcher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60597209Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average radiation oncology physician in 2024
116 Medicare Part D claims for 51 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 19 claims were for opioids.
Most prescribed
- Memantine Hcl12 claims
- Tamsulosin Hcl12 claims
- Gabapentin11 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.
Bills Medicare through one group practice
- Cancer Care Northwest Centers P SPost Falls, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Hasler Thatcher among 198 radiation oncology physician records in Washington
Stephen Hasler Thatcher, M.D. is one of 198 radiation oncology physician records with a practice address in Washington. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 35% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2006 · median 2006 among the 141 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Washington
There are 198 radiation oncology physician records in Washington.
All 198 in Washington → Every provider in Spokane → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Linda Grossheim, MDSpokane, WA 992041548211360
- Zachary Guss, MDSpokane, WA 992041497195762
- Paula Schomberg, M.D.Spokane, WA 992041245218536
- Sasha SwensenSpokane, WA 992041174151815
- Susan Laing, MDSpokane, WA 992081164414785
- David Davenport, MDSpokane Valley, WA 992161558353052
- Karie-Lynn Kelly, M.D.. F.R.C.P.C.Spokane Valley, WA 992161417027640
- Michael Kos, MDSpokane Valley, WA 992161366599631
Common questions
What is Stephen Hasler Thatcher, M.D.'s NPI number?
Stephen Hasler Thatcher, M.D.'s National Provider Identifier (NPI) is 1851628077, issued on Nov 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Hasler Thatcher, M.D. located?
The NPPES record lists a practice address at 101 W 8TH Ave, Spokane, WA, 99204. Phone: (509) 228-1000. Providers update this record themselves, so call before visiting.
How can I verify Stephen Hasler Thatcher, M.D.'s license?
NPPES lists Washington license number MD60597209, 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 Stephen Hasler Thatcher, M.D. prescribe under Medicare Part D?
In 2024, Stephen Hasler Thatcher, M.D. had 116 Medicare Part D claims for 51 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.
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.