NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1265442511 MD
Verify on CMS → Edward Williams, MD
Emergency Medicine Physician in Dover, New Hampshire.
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
332
Medicare Part D claims · 232 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
85.5/100
▲ 2 pts above national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Edward Williams, MD reported a CMS MIPS final score of 85.5/100 - above the 83.5 national average - and filed 332 Medicare Part D claims in 2023.
- 85.5/100
- MIPS score · +2 vs avg
- 332
- 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.
Edward Williams, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
86 ≥ 46th percentile 46% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Edward Williams, MD sits
This provider among emergency medicine physician peers
Across the 14,017 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Edward Williams, MD writes more Part D claims than 84% of them and scores higher on MIPS quality than 35% - placing this provider in the high-volume, lower-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 Edward Williams, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Edward Williams, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Edward Williams, MD?
High performer (top quartile)Primary specialty
Emergency Medicine Physician
Medicare Part D claims
332 6% vs specialty avg
MIPS final score
85.5/100 2 pts vs avg
Specialty distribution in New Hampshire
How Emergency Medicine Physician compares to other specialties among New Hampshire providers
Medicare quality performance, MIPS
Edward Williams, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average
- MIPS Final Score
- 85.5/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Emergency Medicine Physician) - 85.5/100 vs national avg 83.5
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).
Edward Williams, MD appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding MD credentials at 789 CENTRAL AVE, Dover, NH, 03820, with a listed phone of (603) 740-2163. NPI 1265442511 was issued on 08/09/2006.
Medicare Part D records for calendar year 2023 show 332 prescription claims written by this provider, covering 232 Medicare beneficiaries and totaling roughly $7K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 4.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.5/100 for the 2023 performance year (Quality 100, Cost 90.1), compared with the 83.5 average among clinicians with a measured score.
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 | 1265442511 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/09/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.4974
Final Score
Measured-score avg: 83.5
100
Quality
90.1471
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Edward Williams, 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.
Ocumed LLC
Dover, NH
Seacoast Emergency Physicians, PC
Lee, NH
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
Edward Williams, MD - brand share 8.0%
Emergency Medicine Physician average
8% brand-name claims vs 92% generic, on 332 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.
332
Total Claims
$7K
Total Drug Cost
232
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 343
- Total Day Supply
- 3,770
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $3K
- Opioid Claims
- 14 (4.2% rate)
- Antibiotic Claims
- 107
Patient Demographics
- Average Patient Age
- 67.8 years
- Avg HCC Risk Score
- 1.37
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 66, 65-74: 92, 75-84: 59, 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 Edward Williams, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
57 claims
- Cefdinir
Cefdinir
34 claims
- Ondansetron Odt
Ondansetron Odt
24 claims
- Albuterol Sulfate … 17
Albuterol Sulfate Hfa
17 claims
- Cyclobenzaprine Hcl 17
Cyclobenzaprine Hcl
17 claims
- Cephalexin 16
Cephalexin
16 claims
- Amoxicillin-Clavul… 14
Amoxicillin-Clavulanate Potass
14 claims
- Amoxicillin 11
Amoxicillin
11 claims
| Drug | Claims |
|---|---|
| Prednisone | 57 |
| Cefdinir | 34 |
| Ondansetron Odt Ondansetron | 24 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 17 |
| Cyclobenzaprine Hcl | 17 |
| Cephalexin | 16 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 14 |
| Amoxicillin | 11 |
| Meclizine Hcl | 11 |
* 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 Edward Williams, MD 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
Edward Williams, MD's 332 claims are below the specialty average of 352.
Nearby Emergency Medicine Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Williams.
Dr. Donavon Albertson
MD
Portsmouth, NH
Dr. Elizabeth Andrada
MD
Exeter, NH
Dr. Robert Anthony
MD, FRCPC, FACEP
Rochester, NH
Dr. Jeremy Arnold
M.D.
Keene, NH
Samantha Arnold
Portsmouth, NH
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 New Hampshire 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.
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Medical Specialties Explained
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Explore New Hampshire
Frequently Asked Questions
What is Edward Williams, MD's specialty? ▼
Edward Williams, MD specializes in Emergency Medicine Physician and practices in Dover, New Hampshire. Credentials: MD.
How much does Edward Williams, MD prescribe under Medicare Part D? ▼
In 2023, Edward Williams, MD wrote 332 Medicare Part D claims totaling $7K in drug costs for 232 beneficiaries.
What is Edward Williams, MD's Medicare quality score? ▼
Edward Williams, MD has a CMS MIPS Final Score of 85.5/100 (Quality: 100, Cost: 90.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Edward Williams, MD located? ▼
Edward Williams, MD is located at 789 CENTRAL AVE, Dover, NH, 03820. Phone: (603) 740-2163.
What is Edward Williams, MD's NPI number? ▼
Edward Williams, MD's National Provider Identifier (NPI) is 1265442511, issued on 08/09/2006.
Does Edward Williams, MD prescribe more brand-name or generic drugs? ▼
Edward Williams, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $4K in brand drug costs.
Does Edward Williams, MD prescribe opioids? ▼
Yes, Edward Williams, MD had 14 opioid claims in 2023 with an opioid prescribing rate of 4.2%.
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 Edward Williams, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Edward Williams, MD's most frequently prescribed drugs include Prednisone, Cefdinir, Ondansetron Odt. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Edward Williams, MD accept Medicare? ▼
Edward Williams, MD appears in CMS Medicare data with 332 Part D claims and 232 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Edward Williams, MD's credentials? ▼
Edward Williams, MD's NPI is 1265442511 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.
- 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
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.