NPI registry status
Active
2026 NPPES data Specialist NPI 1649381310 M.D.
Verify on CMS → Mathias Zemel, M.D.
Specialist in Paterson, 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 69,608 in Specialist, 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
755
Medicare Part D claims · 237 beneficiaries · Specialist avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$159.3
5 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mathias Zemel, M.D. filed 755 Medicare Part D claims in 2023 as a Specialist in Paterson, New Jersey, prescribing 94% generic.
- 755
- Part D claims, 2023
- 94%
- generic prescribing
- $159.3
- industry payments (Sunshine Act)
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.
Mathias Zemel, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
755 Top 29% higher than 71% 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
What does the federal data show about Mathias Zemel, M.D.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
755 49% vs specialty avg
Specialty distribution in New Jersey
How Specialist 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 Specialist. 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).
Mathias Zemel, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 675 BROADWAY, Paterson, NJ, 07514, with a listed phone of (973) 279-1232. NPI 1649381310 was issued on 08/31/2006.
Medicare Part D records for calendar year 2023 show 755 prescription claims written by this provider, covering 237 Medicare beneficiaries and totaling roughly $106K in drug spend, split 6% brand-name and 94% generic by claim count.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1649381310 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/31/2006 |
Hospital and facility affiliations
Facilities where Mathias Zemel, M.D. 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.
Dr Mathias Zemel, LLC
Paterson, 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 Mathias Zemel, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$159
Largest payer
Janssen Biotech, Inc.
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 · Generic-heavy
Mathias Zemel, M.D. - brand share 6.0%
Specialist average
6% brand-name claims vs 94% generic, on 755 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.
755
Total Claims
$106K
Total Drug Cost
237
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 784
- Total Day Supply
- 19,102
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $80K
- Generic Drug Cost
- $26K
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 68.9 years
- Avg HCC Risk Score
- 1.59
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 58, 65-74: 115, 75-84: 50, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mathias Zemel, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ketoconazole
Ketoconazole
164 claims
- Clobetasol Propion…
Clobetasol Propionate
116 claims
- Ammonium Lactate
Ammonium Lactate
107 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
71 claims
- Hydrocortisone 39
Hydrocortisone
39 claims
- Mupirocin 22
Mupirocin
22 claims
- Metronidazole 20
Metronidazole
20 claims
- Betamethasone Dipr… 16
Betamethasone Diprop Augmented
16 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 164 |
| Clobetasol Propionate | 116 |
| Ammonium Lactate | 107 |
| Triamcinolone Acetonide | 71 |
| Hydrocortisone | 39 |
| Mupirocin | 22 |
| Metronidazole | 20 |
| Betamethasone Diprop Augmented Betamethasone/Propylene Glyc | 16 |
| Clindamycin Phosphate | 15 |
| Tacrolimus | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Mathias Zemel, M.D. fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Mathias Zemel, M.D.'s 755 claims are below the specialty average of 1,474.
Nearby Specialist Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Zemel.
Lisa Abate
Hainesport, NJ
Dr. Ziad Abbud
MD
Neptune, NJ
Dr. Yaakov Abdelhak
M.D.
Hackensack, NJ
Aliyah Abdullah-Griffin
Carteret, NJ
Dr. Vanjelo Abellar
RPT
Carteret, NJ
Compare Specialist 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 Specialist 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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Frequently Asked Questions
What is Mathias Zemel, M.D.'s specialty? ▼
Mathias Zemel, M.D. specializes in Specialist and practices in Paterson, New Jersey. Credentials: M.D..
How much does Mathias Zemel, M.D. prescribe under Medicare Part D? ▼
In 2023, Mathias Zemel, M.D. wrote 755 Medicare Part D claims totaling $106K in drug costs for 237 beneficiaries.
Where is Mathias Zemel, M.D. located? ▼
Mathias Zemel, M.D. is located at 675 BROADWAY, Paterson, NJ, 07514. Phone: (973) 279-1232.
What is Mathias Zemel, M.D.'s NPI number? ▼
Mathias Zemel, M.D.'s National Provider Identifier (NPI) is 1649381310, issued on 08/31/2006.
Does Mathias Zemel, M.D. prescribe more brand-name or generic drugs? ▼
Mathias Zemel, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $80K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Mathias Zemel, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mathias Zemel, M.D.'s most frequently prescribed drugs include Ketoconazole, Clobetasol Propionate, Ammonium Lactate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mathias Zemel, M.D. accept Medicare? ▼
Mathias Zemel, M.D. appears in CMS Medicare data with 755 Part D claims and 237 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mathias Zemel, M.D.'s credentials? ▼
Mathias Zemel, M.D.'s NPI is 1649381310 with credentials M.D.. 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.