NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1710024641 MD
Verify on CMS → William Barton, MD
Critical Care Medicine (Internal Medicine) Physician in Princeton, 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 6,646 in Critical Care Medicine (Internal 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
6K
Medicare Part D claims · 751 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
82%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$18.35
1 payments · CMS Open Payments (Sunshine Act)
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
William Barton, MD filed 5,913 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in Princeton, New Jersey, prescribing 82% generic.
- 6K
- Part D claims, 2023
- 82%
- 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.
William Barton, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,913 Top 5% higher than 95% 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)
William Barton, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 William Barton, MD?
Quality data not reportedPrimary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
5,913 6× vs specialty avg
Specialty distribution in New Jersey
How Critical Care Medicine (Internal 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 Critical Care Medicine (Internal 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).
William Barton, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 419 N HARRISON ST, Princeton, NJ, 08540, with a listed phone of (609) 924-9300. NPI 1710024641 was issued on 01/31/2007.
Medicare Part D records for calendar year 2023 show 5,913 prescription claims written by this provider, covering 751 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 17% brand-name and 82% generic by claim count, with an opioid prescribing rate of 0.8%.
Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,646 enrolled providers across 53 states and an average of 1,069 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 | 1710024641 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/31/2007 |
Hospital and facility affiliations
Facilities where William Barton, 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.
Cora Health Services Inc
Boca Raton, FL
Princeton Medical Group,p.a.
Plainsboro, NJ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for William Barton, MD. Source: openpaymentsdata.cms.gov.
Total received
$18
Largest payer
GlaxoSmithKline, LLC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
William Barton, MD - brand share 17.0%
Critical Care Medicine (Internal Medicine) Physician average
17% brand-name claims vs 82% generic, on 5,913 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.
5,913
Total Claims
$1.0M
Total Drug Cost
751
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 14,622
- Total Day Supply
- 426,035
- Brand vs Generic
- 17% brand / 82% generic
- Brand Drug Cost
- $861K
- Generic Drug Cost
- $184K
- Opioid Claims
- 46 (0.8% rate)
- Antibiotic Claims
- 209
Patient Demographics
- Average Patient Age
- 77.3 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 50% female / 50% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Barton, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
486 claims
- Amlodipine Besylate
Amlodipine Besylate
363 claims
- Losartan Potassium
Losartan Potassium
294 claims
- Levothyroxine Sodium
Levothyroxine Sodium
225 claims
- Rosuvastatin Calcium 176
Rosuvastatin Calcium
176 claims
- Prednisone 168
Prednisone
168 claims
- Lisinopril 163
Lisinopril
163 claims
- Metformin Hcl 154
Metformin Hcl
154 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 486 |
| Amlodipine Besylate | 363 |
| Losartan Potassium | 294 |
| Levothyroxine Sodium | 225 |
| Rosuvastatin Calcium | 176 |
| Prednisone | 168 |
| Lisinopril | 163 |
| Metformin Hcl | 154 |
| Hydrochlorothiazide | 142 |
| Ipratropium Bromide | 139 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine (Internal Medicine) Physician in NJ →
All providers in New Jersey →
Compare specialties →
Critical Care Medicine (Internal Medicine) Physician Overview
How William Barton, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.
6,646
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider
William Barton, MD's 5,913 claims are above the specialty average of 1,069.
Nearby Critical Care Medicine (Internal 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 Barton.
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 Critical Care Medicine (Internal 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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Frequently Asked Questions
What is William Barton, MD's specialty? ▼
William Barton, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Princeton, New Jersey. Credentials: MD.
How much does William Barton, MD prescribe under Medicare Part D? ▼
In 2023, William Barton, MD wrote 5,913 Medicare Part D claims totaling $1.0M in drug costs for 751 beneficiaries.
Where is William Barton, MD located? ▼
William Barton, MD is located at 419 N HARRISON ST, Princeton, NJ, 08540. Phone: (609) 924-9300.
What is William Barton, MD's NPI number? ▼
William Barton, MD's National Provider Identifier (NPI) is 1710024641, issued on 01/31/2007.
Does William Barton, MD prescribe more brand-name or generic drugs? ▼
William Barton, MD's prescribing is 17% brand-name and 82% generic drugs by claim count, with $861K in brand drug costs.
Does William Barton, MD prescribe opioids? ▼
Yes, William Barton, MD had 46 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,646 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does William Barton, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, William Barton, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Barton, MD accept Medicare? ▼
William Barton, MD appears in CMS Medicare data with 5,913 Part D claims and 751 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Barton, MD's credentials? ▼
William Barton, MD's NPI is 1710024641 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.