NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1033171269 MD
Verify on CMS → Mark Belyea, MD
Family Medicine Physician in Huron, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,125 in 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
89
Medicare Part D claims · Family Medicine Physician avg: 4K
Generic prescribing
76%
generic claims · 24% 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
Mark Belyea, MD filed 89 Medicare Part D claims in 2024 as a Family Medicine Physician in Huron, South Dakota, prescribing 76% generic.
- 89
- Part D claims, 2024
- 76%
- generic prescribing
- ≥0th
- 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 Mark Belyea, MD
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 1033171269), first enumerated 04/04/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 89 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 1033171269 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1033171269
- ENUM-LEGACY 2006
- TAX-MEGA 150K Family Medicine
- RX-TRACE 89
- BOOK-LIGHT 584 in South Dakota
- PHOTO-ENUM Adel Massoud, MD · 2006
Mark Belyea, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
89 ≥ 0th percentile 0% 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-eligible specialty (heuristic, not verified)
Mark Belyea, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mark Belyea, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
89 97% vs specialty avg
Specialty distribution in South Dakota
How Family Medicine Physician compares to other specialties among South Dakota 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 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).
Practice Address
Provider Details
| NPI | 1033171269 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/04/2006 |
Brand vs generic prescribing mix · Typical
Mark Belyea, MD - brand share 24.0%
Family Medicine Physician average
24% brand-name claims vs 76% generic, on 89 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.
89
Total Claims
$2K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 90.367
- Total Day Supply
- 2,250
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $1K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 76.0 years
- Avg HCC Risk Score
- 0.99
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mark Belyea, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
29 claims
- Clopidogrel
Clopidogrel
13 claims
- Levetiracetam
Levetiracetam
13 claims
- Pantoprazole Sodium
Pantoprazole Sodium
13 claims
- Metoprolol Tartrate
Metoprolol Tartrate
12 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 29 |
| Clopidogrel Clopidogrel Bisulfate | 13 |
| Levetiracetam | 13 |
| Pantoprazole Sodium | 13 |
| Metoprolol Tartrate | 12 |
* 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 Mark Belyea, MD fits within the Family Medicine Physician landscape nationally.
150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider
Mark Belyea, MD's 89 claims are below the specialty average of 3,519.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Belyea, both outside South Dakota so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Belyea.
One of 584 Family Medicine Physician providers enrolled in South Dakota, 5 are shown here.
Dr. Gordon Abernathie
D.O.
Rapid City, SD
Dr. Kyle Adams
D.O.
Rapid City, SD
Dr. Mary Ahlers
DO
Brookings, SD
Dr. Alese Allerdings
M.D.
De Smet, SD
Dr. Jay Allison
MD
Sioux Falls, SD
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Belyea, MD's specialty? ▼
Mark Belyea, MD specializes in Family Medicine Physician and practices in Huron, South Dakota. Credentials: MD.
How much does Mark Belyea, MD prescribe under Medicare Part D? ▼
In 2024, Mark Belyea, MD wrote 89 Medicare Part D claims totaling $2K in drug costs for N/A beneficiaries.
Where is Mark Belyea, MD located? ▼
Mark Belyea, MD is located at 530 IOWA AVE SE, Huron, SD, 57350. Phone: (605) 352-6040.
What is Mark Belyea, MD's NPI number? ▼
Mark Belyea, MD's National Provider Identifier (NPI) is 1033171269, issued on 04/04/2006.
Does Mark Belyea, MD prescribe more brand-name or generic drugs? ▼
Mark Belyea, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $1K in brand drug costs.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Mark Belyea, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Belyea, MD's most frequently prescribed drugs include Levothyroxine Sodium, Clopidogrel, Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Belyea, MD accept Medicare? ▼
Mark Belyea, MD appears in CMS Medicare data with 89 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Belyea, MD's credentials? ▼
Mark Belyea, MD's NPI is 1033171269 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 (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.