NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1215902119 MD
Verify on CMS → Gregory Mucha, MD
Endocrinology, Diabetes & Metabolism Physician in Saint Paul, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism 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
6K
Medicare Part D claims · 570 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
56%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Gregory Mucha, MD filed 5,628 Medicare Part D claims in 2023 as an Endocrinology, Diabetes & Metabolism Physician in Saint Paul, Minnesota, prescribing 56% generic.
- 6K
- Part D claims, 2023
- 56%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥95th
- 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.
Gregory Mucha, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,628 ≥ 95th percentile 95% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Gregory Mucha, 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 Gregory Mucha, MD?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
5,628 113% vs specialty avg
Specialty distribution in Minnesota
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Minnesota 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 Endocrinology, Diabetes & Metabolism 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).
Gregory Mucha, MD appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 401 PHALEN BLVD, Saint Paul, MN, 55130, with a listed phone of (651) 254-7870. NPI 1215902119 was issued on 02/22/2006.
Medicare Part D records for calendar year 2023 show 5,628 prescription claims written by this provider, covering 570 Medicare beneficiaries and totaling roughly $2.6 million in drug spend, split 38% brand-name and 56% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1215902119 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/22/2006 |
Hospital and facility affiliations
Facilities where Gregory Mucha, 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.
Group Health Plan Inc
Coon Rapids, MN
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 · Above average
Gregory Mucha, MD - brand share 38.0%
Endocrinology, Diabetes & Metabolism Physician average
38% brand-name claims vs 56% generic, on 5,628 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.
5,628
Total Claims
$2.6M
Total Drug Cost
570
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13,300
- Total Day Supply
- 394,748
- Brand vs Generic
- 38% brand / 56% generic
- Brand Drug Cost
- $2.4M
- Generic Drug Cost
- $135K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 70.0 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 94, 65-74: 285, 75-84: 169, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Mucha, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
671 claims
- Ozempic
Ozempic
309 claims
- Metformin Hcl Er 233
Metformin Hcl Er
233 claims
- Atorvastatin Calcium 213
Atorvastatin Calcium
213 claims
- Metformin Hcl 211
Metformin Hcl
211 claims
- Alendronate Sodium 179
Alendronate Sodium
179 claims
- Humalog Kwikpen U-… 147
Humalog Kwikpen U-100
147 claims
- Glipizide Er 142
Glipizide Er
142 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 671 |
| Ozempic Semaglutide | 309 |
| Metformin Hcl Er Metformin Hcl | 233 |
| Atorvastatin Calcium | 213 |
| Metformin Hcl | 211 |
| Alendronate Sodium | 179 |
| Humalog Kwikpen U-100 Insulin Lispro | 147 |
| Glipizide Er Glipizide | 142 |
| Rosuvastatin Calcium | 141 |
| Mounjaro Tirzepatide | 119 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in MN →
All providers in Minnesota →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Gregory Mucha, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Gregory Mucha, MD's 5,628 claims are above the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Mucha.
One of 141 Endocrinology, Diabetes & Metabolism Physician providers enrolled in Minnesota, 5 are shown here.
Dr. Charles Abboud
MBBCH
Rochester, MN
Dr. Munir Abid
MD
Saint Paul, MN
Dr. Ammar Ahmed
MBBS, MSC
Minneapolis, MN
Dr. Mohammed Ahmed
MD
Coon Rapids, MN
Dr. Alaa Al Nofal
MD
Rochester, MN
Compare Endocrinology, Diabetes & Metabolism 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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 Gregory Mucha, MD's specialty? ▼
Gregory Mucha, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Saint Paul, Minnesota. Credentials: MD.
How much does Gregory Mucha, MD prescribe under Medicare Part D? ▼
In 2023, Gregory Mucha, MD wrote 5,628 Medicare Part D claims totaling $2.6M in drug costs for 570 beneficiaries.
Where is Gregory Mucha, MD located? ▼
Gregory Mucha, MD is located at 401 PHALEN BLVD, Saint Paul, MN, 55130. Phone: (651) 254-7870.
What is Gregory Mucha, MD's NPI number? ▼
Gregory Mucha, MD's National Provider Identifier (NPI) is 1215902119, issued on 02/22/2006.
Does Gregory Mucha, MD prescribe more brand-name or generic drugs? ▼
Gregory Mucha, MD's prescribing is 38% brand-name and 56% generic drugs by claim count, with $2.4M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Gregory Mucha, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Mucha, MD's most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Mucha, MD accept Medicare? ▼
Gregory Mucha, MD appears in CMS Medicare data with 5,628 Part D claims and 570 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Mucha, MD's credentials? ▼
Gregory Mucha, MD's NPI is 1215902119 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
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 May 2026.