NPI registry status
Active
2026 NPPES data Pediatric Cardiology Physician NPI 1225091457 MD
Verify on CMS → Lloyd Marks, MD
Pediatric Cardiology Physician in Westfield, 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 2,529 in Pediatric Cardiology 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
33
Medicare Part D claims · Pediatric Cardiology Physician avg: 77
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Lloyd Marks, MD filed 33 Medicare Part D claims in 2023 as a Pediatric Cardiology Physician in Westfield, New Jersey.
- 33
- Part D claims, 2023
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.
Lloyd Marks, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
33 0th percentile higher than 0% 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-eligible specialty (heuristic, not verified)
Lloyd Marks, 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 Lloyd Marks, MD?
Quality data not reportedPrimary specialty
Pediatric Cardiology Physician
Medicare Part D claims
33 57% vs specialty avg
Specialty distribution in New Jersey
How Pediatric Cardiology 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 Pediatric Cardiology 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).
Lloyd Marks, MD appears in the CMS NPPES registry as a Pediatric Cardiology Physician provider holding MD credentials at 940 SOUTH AVE W, Westfield, NJ, 07090, with a listed phone of (908) 789-0512. NPI 1225091457 was issued on 04/10/2006.
Medicare Part D records for calendar year 2023 show 33 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $7K in drug spend.
Pediatric Cardiology Physician is a narrow specialty nationwide, with 2,529 enrolled providers across 51 states and an average of 77 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 | 1225091457 |
|---|---|
| Specialty | Pediatric Cardiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/10/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
33
Total Claims
$7K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 57
- Total Day Supply
- 1,398
- Generic Drug Cost
- $612
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 0.97
Pediatric Cardiology Physician Overview
How Lloyd Marks, MD fits within the Pediatric Cardiology Physician landscape nationally.
2,529
Pediatric Cardiology Physician Providers in US
51
States with Pediatric Cardiology Physician
77
Avg Claims per Provider
Lloyd Marks, MD's 33 claims are below the specialty average of 77.
Nearby Pediatric Cardiology Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Marks.
Dr. Kishan Agarwal
M.D.
Edison, NJ
Dr. Scott Alenick
MD
Westwood, NJ
Dr. Mitchel Alpert
M.D.
Brick, NJ
Dr. Chhaya Bali
MD
Manalapan, NJ
Dr. Harold Bernstein
M.D., PH.D.
Florham Park, NJ
Compare Pediatric Cardiology 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 Jersey medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pediatric Cardiology 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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How to Find a Doctor
Step-by-step guide to choosing a provider
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Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore New Jersey
Frequently Asked Questions
What is Lloyd Marks, MD's specialty? ▼
Lloyd Marks, MD specializes in Pediatric Cardiology Physician and practices in Westfield, New Jersey. Credentials: MD.
How much does Lloyd Marks, MD prescribe under Medicare Part D? ▼
In 2023, Lloyd Marks, MD wrote 33 Medicare Part D claims totaling $7K in drug costs for N/A beneficiaries.
Where is Lloyd Marks, MD located? ▼
Lloyd Marks, MD is located at 940 SOUTH AVE W, Westfield, NJ, 07090. Phone: (908) 789-0512.
What is Lloyd Marks, MD's NPI number? ▼
Lloyd Marks, MD's National Provider Identifier (NPI) is 1225091457, issued on 04/10/2006.
How many Pediatric Cardiology Physician providers are there in the US? ▼
There are 2,529 Pediatric Cardiology Physician providers across 51 states in the US. The average Pediatric Cardiology Physician provider writes 77 Medicare Part D claims per year.
Does Lloyd Marks, MD accept Medicare? ▼
Lloyd Marks, MD appears in CMS Medicare data with 33 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lloyd Marks, MD's credentials? ▼
Lloyd Marks, MD's NPI is 1225091457 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.