NPI registry status
Active
2026 NPPES data Public Health & General Preventive Medicine Physician NPI 1558357996 MD
Verify on CMS → Elizabeth Clark, MD
Public Health & General Preventive Medicine Physician in New Brunswick, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,770 in Public Health & General Preventive 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
1K
Medicare Part D claims · 155 beneficiaries · Public Health & General Preventive Medicine Physician avg: 968
Generic prescribing
83%
generic claims · 15% 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
Elizabeth Clark, MD filed 1,134 Medicare Part D claims in 2023 as a Public Health & General Preventive Medicine Physician in New Brunswick, New Jersey, prescribing 83% generic.
- 1K
- Part D claims, 2023
- 83%
- generic prescribing
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.
Elizabeth Clark, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,134 Top 23% higher than 77% 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
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Board-eligible specialty (heuristic, not verified)
Elizabeth Clark, 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 Elizabeth Clark, MD?
Quality data not reportedPrimary specialty
Public Health & General Preventive Medicine Physician
Medicare Part D claims
1,134 17% vs specialty avg
Specialty distribution in New Jersey
How Public Health & General Preventive Medicine Physician compares to other specialties among New Jersey 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 Public Health & General Preventive 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).
Elizabeth Clark, MD appears in the CMS NPPES registry as a Public Health & General Preventive Medicine Physician provider holding MD credentials at 317 GEORGE ST, New Brunswick, NJ, 08901, with a listed phone of (732) 235-8993. NPI 1558357996 was issued on 09/21/2005.
Medicare Part D records for calendar year 2023 show 1,134 prescription claims written by this provider, covering 155 Medicare beneficiaries and totaling roughly $105K in drug spend, split 15% brand-name and 83% generic by claim count.
Public Health & General Preventive Medicine Physician is a narrow specialty nationwide, with 1,770 enrolled providers across 52 states and an average of 968 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 | 1558357996 |
|---|---|
| Specialty | Public Health & General Preventive Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 09/21/2005 |
Brand vs generic prescribing mix · Typical
Elizabeth Clark, MD - brand share 15.0%
Public Health & General Preventive Medicine Physician average
15% brand-name claims vs 83% generic, on 1,134 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.
1,134
Total Claims
$105K
Total Drug Cost
155
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,199
- Total Day Supply
- 63,787
- Brand vs Generic
- 15% brand / 83% generic
- Brand Drug Cost
- $75K
- Generic Drug Cost
- $29K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 69.0 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 36, 65-74: 76, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Elizabeth Clark, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
119 claims
- Levothyroxine Sodium
Levothyroxine Sodium
67 claims
- Amlodipine Besylate
Amlodipine Besylate
65 claims
- Lisinopril 34
Lisinopril
34 claims
- Alendronate Sodium 31
Alendronate Sodium
31 claims
- Metformin Hcl 31
Metformin Hcl
31 claims
- Fluticasone Propio… 24
Fluticasone Propionate
24 claims
- Esomeprazole Magne… 23
Esomeprazole Magnesium
23 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 119 |
| Levothyroxine Sodium | 67 |
| Amlodipine Besylate | 65 |
| Lisinopril | 34 |
| Alendronate Sodium | 31 |
| Metformin Hcl | 31 |
| Fluticasone Propionate | 24 |
| Esomeprazole Magnesium | 23 |
| Famotidine | 23 |
| Hydrochlorothiazide | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Public Health & General Preventive Medicine Physician in NJ →
All providers in New Jersey →
Compare specialties →
Public Health & General Preventive Medicine Physician Overview
How Elizabeth Clark, MD fits within the Public Health & General Preventive Medicine Physician landscape nationally.
1,770
Public Health & General Preventive Medicine Physician Providers in US
52
States with Public Health & General Preventive Medicine Physician
968
Avg Claims per Provider
Elizabeth Clark, MD's 1,134 claims are above the specialty average of 968.
Nearby Public Health & General Preventive Medicine Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Clark.
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 Jersey medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Public Health & General Preventive 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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Frequently Asked Questions
What is Elizabeth Clark, MD's specialty? ▼
Elizabeth Clark, MD specializes in Public Health & General Preventive Medicine Physician and practices in New Brunswick, New Jersey. Credentials: MD.
How much does Elizabeth Clark, MD prescribe under Medicare Part D? ▼
In 2023, Elizabeth Clark, MD wrote 1,134 Medicare Part D claims totaling $105K in drug costs for 155 beneficiaries.
Where is Elizabeth Clark, MD located? ▼
Elizabeth Clark, MD is located at 317 GEORGE ST, New Brunswick, NJ, 08901. Phone: (732) 235-8993.
What is Elizabeth Clark, MD's NPI number? ▼
Elizabeth Clark, MD's National Provider Identifier (NPI) is 1558357996, issued on 09/21/2005.
Does Elizabeth Clark, MD prescribe more brand-name or generic drugs? ▼
Elizabeth Clark, MD's prescribing is 15% brand-name and 83% generic drugs by claim count, with $75K in brand drug costs.
How many Public Health & General Preventive Medicine Physician providers are there in the US? ▼
There are 1,770 Public Health & General Preventive Medicine Physician providers across 52 states in the US. The average Public Health & General Preventive Medicine Physician provider writes 968 Medicare Part D claims per year.
What drugs does Elizabeth Clark, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Elizabeth Clark, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Elizabeth Clark, MD accept Medicare? ▼
Elizabeth Clark, MD appears in CMS Medicare data with 1,134 Part D claims and 155 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Elizabeth Clark, MD's credentials? ▼
Elizabeth Clark, MD's NPI is 1558357996 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.