NPI registry status
Active
2026 NPPES data Geriatric Medicine (Family Medicine) Physician NPI 1316441447 MD
Verify on CMS → Stephen Supoyo, MD
Geriatric Medicine (Family Medicine) Physician in Seattle, 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 1,779 in Geriatric Medicine (Family Medicine) 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
541
Medicare Part D claims · 44 beneficiaries · Geriatric Medicine (Family Medicine) Physician avg: 5K
Generic prescribing
86%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Stephen Supoyo, MD filed 541 Medicare Part D claims in 2023 as a Geriatric Medicine (Family Medicine) Physician in Seattle, Washington, prescribing 86% generic.
- 541
- Part D claims, 2023
- 86%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Stephen Supoyo, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
541 Top 34% higher than 66% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Stephen Supoyo, MD 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 Supoyo, MD?
Quality data not reportedPrimary specialty
Geriatric Medicine (Family Medicine) Physician
Medicare Part D claims
541 89% vs specialty avg
Specialty distribution in Washington
How Geriatric Medicine (Family Medicine) 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 Geriatric Medicine (Family Medicine) 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).
Stephen Supoyo, MD appears in the CMS NPPES registry as a Geriatric Medicine (Family Medicine) Physician provider holding MD credentials at 9245 RAINIER AVE S, Seattle, WA, 98118, with a listed phone of (206) 722-8444. NPI 1316441447 was issued on 03/22/2018.
Medicare Part D records for calendar year 2023 show 541 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $43K in drug spend, split 12% brand-name and 86% generic by claim count, with an opioid prescribing rate of 9.6%.
Geriatric Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 1,779 enrolled providers across 52 states and an average of 4,854 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1316441447 |
|---|---|
| Specialty | Geriatric Medicine (Family Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/22/2018 |
Hospital and facility affiliations
Facilities where Stephen Supoyo, MD 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.
Neighborcare Health
Seattle, WA
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 Supoyo, MD. To verify Stephen Supoyo, MD'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 Supoyo, MD - brand share 12.0%
Geriatric Medicine (Family Medicine) Physician average
12% brand-name claims vs 86% generic, on 541 2023 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 2023.
541
Total Claims
$43K
Total Drug Cost
44
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 810
- Total Day Supply
- 21,907
- Brand vs Generic
- 12% brand / 86% generic
- Brand Drug Cost
- $18K
- Generic Drug Cost
- $25K
- Opioid Claims
- 52 (9.6% rate)
- Antibiotic Claims
- 15
Patient Demographics
- Average Patient Age
- 78.3 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 0, 65-74: 17, 75-84: 15, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephen Supoyo, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
42 claims
- Diclofenac Sodium
Diclofenac Sodium
34 claims
- Eliquis
Eliquis
23 claims
- Buprenorphine
Buprenorphine
19 claims
- Oxycodone Hcl
Oxycodone Hcl
18 claims
- Amlodipine Besylate
Amlodipine Besylate
17 claims
- Levothyroxine Sodium
Levothyroxine Sodium
17 claims
- Chlorthalidone 16
Chlorthalidone
16 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 42 |
| Diclofenac Sodium | 34 |
| Eliquis Apixaban | 23 |
| Buprenorphine | 19 |
| Oxycodone Hcl | 18 |
| Amlodipine Besylate | 17 |
| Levothyroxine Sodium | 17 |
| Chlorthalidone | 16 |
| Losartan Potassium | 16 |
| Quetiapine Fumarate | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Family Medicine) Physician in WA →
All providers in Washington →
Compare specialties →
Geriatric Medicine (Family Medicine) Physician Overview
How Stephen Supoyo, MD fits within the Geriatric Medicine (Family Medicine) Physician landscape nationally.
1,779
Geriatric Medicine (Family Medicine) Physician Providers in US
52
States with Geriatric Medicine (Family Medicine) Physician
4,854
Avg Claims per Provider
Stephen Supoyo, MD's 541 claims are below the specialty average of 4,854.
Nearby Geriatric Medicine (Family Medicine) Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Supoyo.
Dr. Dejene Abetew
MD
Tacoma, WA
Dr. Scott Balson
M.D.
Tacoma, WA
Dr. Janice L Bishop
M.D.
Bellevue, WA
Dr. Sharon Brown
APRN
Anacortes, WA
Dr. Patricia Coyman
DO
Yakima, WA
Compare Geriatric Medicine (Family Medicine) Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Washington medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (Family Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Stephen Supoyo, MD's specialty? ▼
Stephen Supoyo, MD specializes in Geriatric Medicine (Family Medicine) Physician and practices in Seattle, Washington. Credentials: MD.
How much does Stephen Supoyo, MD prescribe under Medicare Part D? ▼
In 2023, Stephen Supoyo, MD wrote 541 Medicare Part D claims totaling $43K in drug costs for 44 beneficiaries.
Where is Stephen Supoyo, MD located? ▼
Stephen Supoyo, MD is located at 9245 RAINIER AVE S, Seattle, WA, 98118. Phone: (206) 722-8444.
What is Stephen Supoyo, MD's NPI number? ▼
Stephen Supoyo, MD's National Provider Identifier (NPI) is 1316441447, issued on 03/22/2018.
Does Stephen Supoyo, MD prescribe more brand-name or generic drugs? ▼
Stephen Supoyo, MD's prescribing is 12% brand-name and 86% generic drugs by claim count, with $18K in brand drug costs.
Does Stephen Supoyo, MD prescribe opioids? ▼
Yes, Stephen Supoyo, MD had 52 opioid claims in 2023 with an opioid prescribing rate of 9.6%.
How many Geriatric Medicine (Family Medicine) Physician providers are there in the US? ▼
There are 1,779 Geriatric Medicine (Family Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Family Medicine) Physician provider writes 4,854 Medicare Part D claims per year.
What drugs does Stephen Supoyo, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Supoyo, MD's most frequently prescribed drugs include Atorvastatin Calcium, Diclofenac Sodium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Supoyo, MD accept Medicare? ▼
Stephen Supoyo, MD appears in CMS Medicare data with 541 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Supoyo, MD's credentials? ▼
Stephen Supoyo, MD's NPI is 1316441447 with credentials MD. 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 (2023). 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.