2026 NPPES data Family Medicine Physician NPI 1336637529 MD
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STEPHEN ASAY, MD

Family Medicine Physician in THERMOPOLIS, Wyoming. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
7K
Medicare Part D claims · 297 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.6/100
▲ 14 pts above national avg 83.1 · [object Object]
What the federal data reveals: STEPHEN ASAY, MD is a Family Medicine Physician ([object Object]) practicing in THERMOPOLIS, Wyoming with a Medicare Part D prescribing footprint of 7K claims across 297 beneficiaries — 15% brand-name prescribing . Their CMS MIPS Final Score of 96.6/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: STEPHEN ASAY, MD reported a CMS MIPS final score of 96.6 out of 100, above the 83.1 national average, and filed 7,044 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

STEPHEN ASAY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

STEPHEN ASAY, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 04/24/2018

NPI 1336637529

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

7,044 106% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

96.6/100 13.5% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Wyoming

How Family Medicine Physician compares to other specialties among Wyoming providers

Wyoming providers

Family Medicine Physician share within Wyoming

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within Wyoming

Medicare quality performance — MIPS

STEPHEN ASAY, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average

High performer (top quartile)
MIPS Final Score
96.6/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) — 96.6/100 vs national avg 83.1

0%100%National avg83%96.6%
MIPS final score (Family Medicine Physician) — 96.6/100 vs national avg 83.1

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 ASAY, MD is a Family Medicine Physician provider practicing in THERMOPOLIS, Wyoming, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1336637529. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

STEPHEN ASAY, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 150 E ARAPAHOE ST, THERMOPOLIS, WY, 82443, with a listed phone of (307) 864-3121. NPI 1336637529 was issued on 04/24/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ASAY most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 7,044 prescription claims written by this provider, covering 297 Medicare beneficiaries and totaling roughly $463K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 2.4%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 96.6/100 for the 2023 performance year, compared with the national average of 83.1.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

150 E ARAPAHOE ST
THERMOPOLIS, WY 82443

Provider Details

NPI 1336637529
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 04/24/2018

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

96.6
Final Score
Avg: 83.1
96
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where STEPHEN ASAY, 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.

HOT SPRINGS COUNTY HOSPITAL DISTRICT
WORLAND, WY

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

STEPHEN ASAY, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 7,044 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.

7,044
Total Claims
$463K
Total Drug Cost
297
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,695
Total Day Supply
227,021
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$289K
Generic Drug Cost
$173K
Opioid Claims
169 (2.4% rate)
Antibiotic Claims
209

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.17
Gender Split
59% female / 41% male
Age Distribution
<65: 28, 65-74: 136, 75-84: 87, 85+: 46

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Furosemide
323
Levothyroxine Sodium
302
Omeprazole
271
Potassium Chloride
209
Atorvastatin Calcium
202
Gabapentin
192
Lisinopril
179
Pantoprazole Sodium
172
Amlodipine Besylate
163
Tamsulosin Hcl
152

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Family Medicine Physician Overview

How STEPHEN ASAY, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

STEPHEN ASAY, MD's 7,044 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Wyoming

Other clinicians with the same primary specialty enrolled in Wyoming, drawn from the same CMS NPPES roster as ASAY.

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEPHEN ASAY, MD's specialty?
STEPHEN ASAY, MD specializes in Family Medicine Physician and practices in THERMOPOLIS, Wyoming. Credentials: MD.
How much does STEPHEN ASAY, MD prescribe under Medicare Part D?
In 2023, STEPHEN ASAY, MD wrote 7,044 Medicare Part D claims totaling $463K in drug costs for 297 beneficiaries.
What is STEPHEN ASAY, MD's Medicare quality score?
STEPHEN ASAY, MD has a CMS MIPS Final Score of 96.6/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STEPHEN ASAY, MD located?
STEPHEN ASAY, MD is located at 150 E ARAPAHOE ST, THERMOPOLIS, WY, 82443. Phone: (307) 864-3121.
What is STEPHEN ASAY, MD's NPI number?
STEPHEN ASAY, MD's National Provider Identifier (NPI) is 1336637529, issued on 04/24/2018.
Does STEPHEN ASAY, MD prescribe more brand-name or generic drugs?
STEPHEN ASAY, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $289K in brand drug costs.
Does STEPHEN ASAY, MD prescribe opioids?
Yes, STEPHEN ASAY, MD had 169 opioid claims in 2023 with an opioid prescribing rate of 2.4%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does STEPHEN ASAY, MD prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN ASAY, MD's most frequently prescribed drugs include Furosemide, Levothyroxine Sodium, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN ASAY, MD accept Medicare?
STEPHEN ASAY, MD appears in CMS Medicare data with 7,044 Part D claims and 297 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN ASAY, MD's credentials?
STEPHEN ASAY, MD's NPI is 1336637529 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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