NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1144857632
Verify on CMS → Frank Mayer
Emergency Medicine Physician in Dover, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in 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
135
Medicare Part D claims · 99 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98/100
▲ 15 pts above national avg 83.1 · Exceptional
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
Frank Mayer reported a CMS MIPS final score of 98/100 - above the 83.1 national average - and filed 135 Medicare Part D claims in 2023.
- 98/100
- MIPS score · +15 vs avg
- 135
- Part D claims, 2023
- 92%
- 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.
Frank Mayer's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 11% higher than 89% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Frank Mayer sits
This provider among emergency medicine physician peers
Across the 14,967 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Frank Mayer writes more Part D claims than 44% of them and scores higher on MIPS quality than 88% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one emergency medicine physician peer from a representative sample of 60; the gold marker is Frank Mayer. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Frank Mayer 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).
What does the federal data show about Frank Mayer?
High performer (top quartile)Primary specialty
Emergency Medicine Physician
Medicare Part D claims
135 62% vs specialty avg
MIPS final score
98/100 14.9 pts vs avg
Specialty distribution in Delaware
How Emergency Medicine Physician compares to other specialties among Delaware providers
Medicare quality performance, MIPS
Frank Mayer's 2023 MIPS final score plotted against the Emergency Medicine Physician national average
- MIPS Final Score
- 98/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Emergency Medicine Physician) - 98/100 vs national avg 83.1
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).
Frank Mayer appears in the CMS NPPES registry as an Emergency Medicine Physician provider at 640 S STATE ST, Dover, DE, 19901, with a listed phone of (302) 674-4700. NPI 1144857632 was issued on 03/24/2020.
Medicare Part D records for calendar year 2023 show 135 prescription claims written by this provider, covering 99 Medicare beneficiaries and totaling roughly $4K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 12.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98/100 for the 2023 performance year (Quality 88.5), compared with the national average of 83.1.
Emergency Medicine Physician is a high-volume specialty nationwide, with 64,463 enrolled providers across 56 states and an average of 352 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 | 1144857632 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Gender | Male |
| NPI Issued | 03/24/2020 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0348
Final Score
Avg: 83.1
88.5219
Quality
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Frank Mayer 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.
Bayhealth Emergency Physicians LLC
Dover, DE
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 · Generic-heavy
Frank Mayer - brand share 8.0%
Emergency Medicine Physician average
8% brand-name claims vs 92% generic, on 135 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.
135
Total Claims
$4K
Total Drug Cost
99
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 137
- Total Day Supply
- 1,237
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $2K
- Opioid Claims
- 17 (12.6% rate)
- Antibiotic Claims
- 56
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 2.02
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 18, 65-74: 34, 75-84: 28, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Frank Mayer prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
14 claims
- Cefpodoxime Proxetil
Cefpodoxime Proxetil
12 claims
- Prednisone
Prednisone
12 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 14 |
| Cefpodoxime Proxetil | 12 |
| Prednisone | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Medicine Physician Overview
How Frank Mayer fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Frank Mayer's 135 claims are below the specialty average of 352.
Nearby Emergency Medicine Physician Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Mayer.
Dr. Kelly Abbrescia
DO
Dover, DE
Dr. Ketaki Abhyankar
M.D.
Newark, DE
Dr. Kokou Ahama
MD
Dover, DE
Dr. Lindsay Albanese
M.D.
Lewes, DE
Dr. Douglas Allen
DO
Lewes, DE
Compare Emergency 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 Delaware medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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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Explore Delaware
Frequently Asked Questions
What is Frank Mayer's specialty? ▼
Frank Mayer specializes in Emergency Medicine Physician and practices in Dover, Delaware.
How much does Frank Mayer prescribe under Medicare Part D? ▼
In 2023, Frank Mayer wrote 135 Medicare Part D claims totaling $4K in drug costs for 99 beneficiaries.
What is Frank Mayer's Medicare quality score? ▼
Frank Mayer has a CMS MIPS Final Score of 98/100 (Quality: 88.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Frank Mayer located? ▼
Frank Mayer is located at 640 S STATE ST, Dover, DE, 19901. Phone: (302) 674-4700.
What is Frank Mayer's NPI number? ▼
Frank Mayer's National Provider Identifier (NPI) is 1144857632, issued on 03/24/2020.
Does Frank Mayer prescribe more brand-name or generic drugs? ▼
Frank Mayer's prescribing is 8% brand-name and 92% generic drugs by claim count, with $2K in brand drug costs.
Does Frank Mayer prescribe opioids? ▼
Yes, Frank Mayer had 17 opioid claims in 2023 with an opioid prescribing rate of 12.6%.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does Frank Mayer prescribe most often? ▼
Based on 2023 Medicare Part D data, Frank Mayer's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Cefpodoxime Proxetil, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Frank Mayer accept Medicare? ▼
Frank Mayer appears in CMS Medicare data with 135 Part D claims and 99 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Frank Mayer's credentials? ▼
Frank Mayer's NPI is 1144857632. 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.
- 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
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.