NPI registry status
Active
2026 NPPES data Emergency Medical Services (Emergency Medicine) Physician NPI 1902851090 MD
Verify on CMS → Gregory Gremmel, MD
Emergency Medical Services (Emergency Medicine) Physician in Austin, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,618 in Emergency Medical Services (Emergency 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
173
Medicare Part D claims · 114 beneficiaries · Emergency Medical Services (Emergency Medicine) Physician avg: 394
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gregory Gremmel, MD filed 173 Medicare Part D claims in 2023 as a Emergency Medical Services (Emergency Medicine) Physician in Austin, Texas.
- 173
- Part D claims, 2023
- 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.
Gregory Gremmel, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
173 35th percentile higher than 35% 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)
Gregory Gremmel, 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 Gremmel, MD?
Quality data not reportedPrimary specialty
Emergency Medical Services (Emergency Medicine) Physician
Medicare Part D claims
173 56% vs specialty avg
Specialty distribution in Texas
How Emergency Medical Services (Emergency Medicine) Physician compares to other specialties among Texas 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 Emergency Medical Services (Emergency 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).
Gregory Gremmel, MD appears in the CMS NPPES registry as an Emergency Medical Services (Emergency Medicine) Physician provider holding MD credentials at 919 E 32ND ST, Austin, TX, 78705, with a listed phone of (512) 476-7111. NPI 1902851090 was issued on 05/24/2006.
Medicare Part D records for calendar year 2023 show 173 prescription claims written by this provider, covering 114 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 11.6%.
Emergency Medical Services (Emergency Medicine) Physician is a narrow specialty nationwide, with 3,618 enrolled providers across 55 states and an average of 394 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 | 1902851090 |
|---|---|
| Specialty | Emergency Medical Services (Emergency Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/24/2006 |
Hospital and facility affiliations
Facilities where Gregory Gremmel, 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.
Lone Star Emergency Associates LLC
Yoakum, TX
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 - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Gregory Gremmel, MD. To verify Gregory Gremmel, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
173
Total Claims
$3K
Total Drug Cost
114
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 174
- Total Day Supply
- 1,528
- Generic Drug Cost
- $1K
- Opioid Claims
- 20 (11.6% rate)
- Antibiotic Claims
- 75
Patient Demographics
- Average Patient Age
- 71.1 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 23, 65-74: 40, 75-84: 36, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Gremmel, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
20 claims
- Cephalexin
Cephalexin
18 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
17 claims
- Acetaminophen-Code…
Acetaminophen-Codeine
13 claims
- Azithromycin
Azithromycin
11 claims
| Drug | Claims |
|---|---|
| Prednisone | 20 |
| Cephalexin | 18 |
| Ciprofloxacin Hcl | 17 |
| Acetaminophen-Codeine Acetaminophen With Codeine | 13 |
| Azithromycin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Emergency Medical Services (Emergency Medicine) Physician in TX →
All providers in Texas →
Compare specialties →
Emergency Medical Services (Emergency Medicine) Physician Overview
How Gregory Gremmel, MD fits within the Emergency Medical Services (Emergency Medicine) Physician landscape nationally.
3,618
Emergency Medical Services (Emergency Medicine) Physician Providers in US
55
States with Emergency Medical Services (Emergency Medicine) Physician
394
Avg Claims per Provider
Gregory Gremmel, MD's 173 claims are below the specialty average of 394.
Nearby Emergency Medical Services (Emergency Medicine) Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Gremmel.
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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Emergency Medical Services (Emergency 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Gregory Gremmel, MD's specialty? ▼
Gregory Gremmel, MD specializes in Emergency Medical Services (Emergency Medicine) Physician and practices in Austin, Texas. Credentials: MD.
How much does Gregory Gremmel, MD prescribe under Medicare Part D? ▼
In 2023, Gregory Gremmel, MD wrote 173 Medicare Part D claims totaling $3K in drug costs for 114 beneficiaries.
Where is Gregory Gremmel, MD located? ▼
Gregory Gremmel, MD is located at 919 E 32ND ST, Austin, TX, 78705. Phone: (512) 476-7111.
What is Gregory Gremmel, MD's NPI number? ▼
Gregory Gremmel, MD's National Provider Identifier (NPI) is 1902851090, issued on 05/24/2006.
Does Gregory Gremmel, MD prescribe opioids? ▼
Yes, Gregory Gremmel, MD had 20 opioid claims in 2023 with an opioid prescribing rate of 11.6%.
How many Emergency Medical Services (Emergency Medicine) Physician providers are there in the US? ▼
There are 3,618 Emergency Medical Services (Emergency Medicine) Physician providers across 55 states in the US. The average Emergency Medical Services (Emergency Medicine) Physician provider writes 394 Medicare Part D claims per year.
What drugs does Gregory Gremmel, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Gremmel, MD's most frequently prescribed drugs include Prednisone, Cephalexin, Ciprofloxacin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Gremmel, MD accept Medicare? ▼
Gregory Gremmel, MD appears in CMS Medicare data with 173 Part D claims and 114 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Gremmel, MD's credentials? ▼
Gregory Gremmel, MD's NPI is 1902851090 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.
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.