NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1851628077 M.D.
Verify on CMS → Stephen Thatcher, M.D.
Radiation Oncology Physician in Spokane, Washington.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,141 in Radiation Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
116
Medicare Part D claims · 51 beneficiaries · Radiation Oncology Physician avg: 135
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Stephen Thatcher, M.D. filed 116 Medicare Part D claims in 2024 as a Radiation Oncology Physician in Spokane, Washington, prescribing 85% generic.
- 116
- Part D claims, 2024
- 85%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥34th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Stephen Thatcher, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1851628077), first enumerated 11/09/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 116 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Stephen Thatcher, M.D.'s individual license status. Verify directly with the state medical board.
Source: WMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1851628077 · Radiation Oncology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1851628077
- ENUM-MID 2009
- TAX-MID 6K Radiation Oncology
- RX-LIGHT 116
- BOOK-THIN 188 in Washington
- PHOTO-ENUM Jose Bazan · 2009
Stephen Thatcher, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
116 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Stephen Thatcher, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Stephen Thatcher, M.D.?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
116 14% vs specialty avg
Specialty distribution in Washington
How Radiation Oncology Physician compares to other specialties among Washington providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Radiation Oncology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1851628077 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/09/2009 |
Hospital and facility affiliations
Facilities where Stephen Thatcher, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Cancer Care Northwest Centers P S
Post Falls, ID
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Washington WMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 - they are NOT specific to Stephen Thatcher, M.D.. To verify Stephen Thatcher, M.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases
WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Stephen Thatcher, M.D. - brand share 15.0%
Radiation Oncology Physician average
15% brand-name claims vs 85% generic, on 116 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
116
Total Claims
$2K
Total Drug Cost
51
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 133.233
- Total Day Supply
- 2,597
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $366
- Generic Drug Cost
- $2K
- Opioid Claims
- 19 (16.4% rate)
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 1.94
- Gender Split
- 47% female / 53% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Stephen Thatcher, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Memantine Hcl
Memantine Hcl
12 claims
- Tamsulosin Hcl
Tamsulosin Hcl
12 claims
- Gabapentin
Gabapentin
11 claims
| Drug | Claims |
|---|---|
| Memantine Hcl | 12 |
| Tamsulosin Hcl | 12 |
| Gabapentin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How Stephen Thatcher, M.D. fits within the Radiation Oncology Physician landscape nationally.
6,141
Radiation Oncology Physician Providers in US
53
States with Radiation Oncology Physician
135
Avg Claims per Provider
Stephen Thatcher, M.D.'s 116 claims are below the specialty average of 135.
Nationwide Radiation Oncology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Thatcher, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Radiation Oncology Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Thatcher.
One of 188 Radiation Oncology Physician providers enrolled in Washington, 5 are shown here.
Dr. Ahsen Ahmed
MD
Seattle, WA
Saif Aljabab
MBBS
Seattle, WA
Dr. Gregory Allen
M.D., PHD
Lacey, WA
Dr. Smith Apisarnthanarax
MD
Seattle, WA
Dr. Andrea Arnett
M.D., PH.D.
Bellingham, WA
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephen Thatcher, M.D.'s specialty? ▼
Stephen Thatcher, M.D. specializes in Radiation Oncology Physician and practices in Spokane, Washington. Credentials: M.D..
How much does Stephen Thatcher, M.D. prescribe under Medicare Part D? ▼
In 2024, Stephen Thatcher, M.D. wrote 116 Medicare Part D claims totaling $2K in drug costs for 51 beneficiaries.
Where is Stephen Thatcher, M.D. located? ▼
Stephen Thatcher, M.D. is located at 101 W 8TH AVE, Spokane, WA, 99204. Phone: (509) 228-1000.
What is Stephen Thatcher, M.D.'s NPI number? ▼
Stephen Thatcher, M.D.'s National Provider Identifier (NPI) is 1851628077, issued on 11/09/2009.
Does Stephen Thatcher, M.D. prescribe more brand-name or generic drugs? ▼
Stephen Thatcher, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $366 in brand drug costs.
Does Stephen Thatcher, M.D. prescribe opioids? ▼
Yes, Stephen Thatcher, M.D. had 19 opioid claims in 2024 with an opioid prescribing rate of 16.4%.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,141 Radiation Oncology Physician providers across 53 states in the US. The average Radiation Oncology Physician provider writes 135 Medicare Part D claims per year.
What drugs does Stephen Thatcher, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Stephen Thatcher, M.D.'s most frequently prescribed drugs include Memantine Hcl, Tamsulosin Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Thatcher, M.D. accept Medicare? ▼
Stephen Thatcher, M.D. appears in CMS Medicare data with 116 Part D claims and 51 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Thatcher, M.D.'s credentials? ▼
Stephen Thatcher, M.D.'s NPI is 1851628077 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.