NPI registry status
Active
2026 NPPES data Pulmonary Disease Physician NPI 1518055417 M.D.
Verify on CMS → Len Horovitz, M.D.
Pulmonary Disease Physician in New York, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,323 in Pulmonary Disease 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 · 101 beneficiaries · Pulmonary Disease Physician avg: 1K
Industry payments
$736.85
33 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Len Horovitz, M.D. filed 1,038 Medicare Part D claims in 2023 as a Pulmonary Disease Physician in New York, New York.
- 1K
- Part D claims, 2023
- $736.85
- 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.
Len Horovitz, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,038 Top 24% higher than 76% 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)
Len Horovitz, M.D. 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 Len Horovitz, M.D.?
Quality data not reportedPrimary specialty
Pulmonary Disease Physician
Medicare Part D claims
1,038 29% vs specialty avg
Specialty distribution in New York
How Pulmonary Disease Physician compares to other specialties among New York 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 Pulmonary Disease 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).
Len Horovitz, M.D. appears in the CMS NPPES registry as a Pulmonary Disease Physician provider holding M.D. credentials at 47 E 77TH ST, New York, NY, 10021, with a listed phone of (212) 744-3001. NPI 1518055417 was issued on 10/10/2006.
Medicare Part D records for calendar year 2023 show 1,038 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $82K in drug spend.
Pulmonary Disease Physician is a mid-sized specialty nationwide, with 9,323 enrolled providers across 53 states and an average of 1,457 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 | 1518055417 |
|---|---|
| Specialty | Pulmonary Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/10/2006 |
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 Len Horovitz, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$737
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.
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to Len Horovitz, M.D.. To verify Len Horovitz, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,038
Total Claims
$82K
Total Drug Cost
101
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,923
- Total Day Supply
- 55,707
- Generic Drug Cost
- $19K
- Antibiotic Claims
- 54
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 0.75
- Gender Split
- 49% female / 51% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Len Horovitz, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
103 claims
- Zolpidem Tartrate
Zolpidem Tartrate
66 claims
- Clonazepam
Clonazepam
59 claims
- Losartan Potassium
Losartan Potassium
54 claims
- Levothyroxine Sodium
Levothyroxine Sodium
48 claims
- Amlodipine Besylate 41
Amlodipine Besylate
41 claims
- Metformin Hcl 33
Metformin Hcl
33 claims
- Diltiazem 24hr Er … 25
Diltiazem 24hr Er (Cd)
25 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 103 |
| Zolpidem Tartrate | 66 |
| Clonazepam | 59 |
| Losartan Potassium | 54 |
| Levothyroxine Sodium | 48 |
| Amlodipine Besylate | 41 |
| Metformin Hcl | 33 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 25 |
| Montelukast Sodium | 24 |
| Advair Diskus Fluticasone Propion/Salmeterol | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pulmonary Disease Physician Overview
How Len Horovitz, M.D. fits within the Pulmonary Disease Physician landscape nationally.
9,323
Pulmonary Disease Physician Providers in US
53
States with Pulmonary Disease Physician
1,457
Avg Claims per Provider
Len Horovitz, M.D.'s 1,038 claims are below the specialty average of 1,457.
Nearby Pulmonary Disease Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Horovitz.
Dr. Antoine Tony Abed
MD
New York, NY
Dr. Michael Aboodi
M.D.
New York, NY
Dr. Jose Acevedo-Ramos
M.D.
Geneva, NY
Dr. Angelo Acquista
MD
New York, NY
Dr. Francis Adams
M.D.
New York, NY
Compare Pulmonary Disease 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 York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pulmonary Disease 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 Len Horovitz, M.D.'s specialty? ▼
Len Horovitz, M.D. specializes in Pulmonary Disease Physician and practices in New York, New York. Credentials: M.D..
How much does Len Horovitz, M.D. prescribe under Medicare Part D? ▼
In 2023, Len Horovitz, M.D. wrote 1,038 Medicare Part D claims totaling $82K in drug costs for 101 beneficiaries.
Where is Len Horovitz, M.D. located? ▼
Len Horovitz, M.D. is located at 47 E 77TH ST, New York, NY, 10021. Phone: (212) 744-3001.
What is Len Horovitz, M.D.'s NPI number? ▼
Len Horovitz, M.D.'s National Provider Identifier (NPI) is 1518055417, issued on 10/10/2006.
How many Pulmonary Disease Physician providers are there in the US? ▼
There are 9,323 Pulmonary Disease Physician providers across 53 states in the US. The average Pulmonary Disease Physician provider writes 1,457 Medicare Part D claims per year.
What drugs does Len Horovitz, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Len Horovitz, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Zolpidem Tartrate, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Len Horovitz, M.D. accept Medicare? ▼
Len Horovitz, M.D. appears in CMS Medicare data with 1,038 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Len Horovitz, M.D.'s credentials? ▼
Len Horovitz, M.D.'s NPI is 1518055417 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
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.