NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1467428573 DO
Verify on CMS → Mark Hornfeld, DO
Ophthalmology 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 22,388 in Ophthalmology 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
7K
Medicare Part D claims · 1K beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
44.7/100
▼ 39 pts below national avg 83.5 · Below average
Industry payments
$912.07
43 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mark Hornfeld, DO reported a CMS MIPS final score of 44.7/100 - below the 83.5 national average - and filed 6,653 Medicare Part D claims in 2024.
- 44.7/100
- MIPS score · -39 vs avg
- 7K
- Part D claims, 2024
- 59%
- 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.
Federal trust snapshot
What official records show about Mark Hornfeld, DO
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1467428573), first enumerated 02/28/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 6,653 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 44.7/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Industry payment transparency
$912.07 in reported industry payments (43 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
New York statewide board action statistics are published annually — these figures describe aggregate state activity, not Mark Hornfeld, DO's individual license status. Verify directly with the state medical board.
Source: NYSBPMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1467428573 · Ophthalmology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1467428573
- ENUM-LEGACY 2006
- TAX-MID 22K Ophthalmology Physician
- MIPS-LOW 44.7/100
- RX-MID 6,653
- BOOK-LIGHT 1,746 in New York
- PHOTO-FINISH Anthony Antonello, M… · ±0.1
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Hornfeld · this …
Hornfeld · this provider
44.7 MIPS pts
- Anthony Antonell…
Anthony Antonello, M.D.
44.8 MIPS pts
- Suzanne Pesce, M…
Suzanne Pesce, MD
44.8 MIPS pts
- Stephanie Skolik…
Stephanie Skolik, MD
45 MIPS pts
- Radu Pacurariu, …
Radu Pacurariu, MD
45 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Mark Hornfeld, DO's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
45 ≥ 4th percentile 4% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mark Hornfeld, DO sits
This provider among ophthalmology physician peers
Across the 8,767 ophthalmology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Hornfeld, DO writes more Part D claims than 98% of them and scores higher on MIPS quality than 6% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one ophthalmology physician peer from a representative sample of 60; the gold marker is Mark Hornfeld, DO. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mark Hornfeld, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Mark Hornfeld, DO?
Below national averagePrimary specialty
Ophthalmology Physician
Medicare Part D claims
6,653 347% vs specialty avg
MIPS final score
44.7/100 38.8 pts vs avg
Specialty distribution in New York
How Ophthalmology Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Mark Hornfeld, DO's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 44.7/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1467428573 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 02/28/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
44.65
Final Score
Measured-score avg: 83.5
29
Promoting Interoperability
Reporting: Individual
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 Mark Hornfeld, DO. Source: openpaymentsdata.cms.gov.
Total received
$912
Largest payer
Alcon Vision 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 Mark Hornfeld, DO. To verify Mark Hornfeld, DO'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.
Brand vs generic prescribing mix · Above average
Mark Hornfeld, DO - brand share 41.0%
Ophthalmology Physician average
41% brand-name claims vs 59% generic, on 6,653 2024 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 2024.
6,653
Total Claims
$1.1M
Total Drug Cost
1,158
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,121.567
- Total Day Supply
- 248,547
- Brand vs Generic
- 41% brand / 59% generic
- Brand Drug Cost
- $976K
- Generic Drug Cost
- $158K
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 74.4 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 83, 65-74: 526, 75-84: 407, 85+: 142
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mark Hornfeld, DO prescribes most
Top Medicare Part D drugs by claim count, 2024
- Brimonidine Tartrate
Brimonidine Tartrate
764 claims
- Latanoprost
Latanoprost
630 claims
- Tobramycin-Dexamet…
Tobramycin-Dexamethasone
542 claims
- Alrex
Alrex
477 claims
- Azelastine Hcl
Azelastine Hcl
423 claims
- Ketorolac Trometha…
Ketorolac Tromethamine
413 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
306 claims
- Neomycin-Polymyxin… 300
Neomycin-Polymyxin-Dexameth
300 claims
| Drug | Claims |
|---|---|
| Brimonidine Tartrate | 764 |
| Latanoprost | 630 |
| Tobramycin-Dexamethasone Tobramycin/Dexamethasone | 542 |
| Alrex Loteprednol Etabonate | 477 |
| Azelastine Hcl | 423 |
| Ketorolac Tromethamine | 413 |
| Ciprofloxacin Hcl | 306 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 300 |
| Erythromycin Erythromycin Base | 249 |
| Timolol Maleate | 223 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Mark Hornfeld, DO fits within the Ophthalmology Physician landscape nationally.
22,388
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,490
Avg Claims per Provider
Mark Hornfeld, DO's 6,653 claims are above the specialty average of 1,490.
Nationwide Ophthalmology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hornfeld, both outside New York so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (44.7 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Ophthalmology Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Hornfeld.
One of 1,746 Ophthalmology Physician providers enrolled in New York, 5 are shown here.
Dr. Aliaa Abdelhakim Hamed
M.D., PH.D.
New York, NY
Dr. Majida Abdul Gaffar
M.D.
Hawthorne, NY
Dr. David H Abramson
MD
New York, NY
Dr. Frank Accardi
MD
New York, NY
Dr. Jacob Ackerman
MD
Brooklyn, NY
Compare Ophthalmology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Hornfeld, DO's specialty? ▼
Mark Hornfeld, DO specializes in Ophthalmology Physician and practices in New York, New York. Credentials: DO.
How much does Mark Hornfeld, DO prescribe under Medicare Part D? ▼
In 2024, Mark Hornfeld, DO wrote 6,653 Medicare Part D claims totaling $1.1M in drug costs for 1,158 beneficiaries.
What is Mark Hornfeld, DO's Medicare quality score? ▼
Mark Hornfeld, DO has a CMS MIPS Final Score of 44.7/100. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Hornfeld, DO located? ▼
Mark Hornfeld, DO is located at 125 W 79TH STREET, New York, NY, 10024. Phone: (212) 580-8881.
What is Mark Hornfeld, DO's NPI number? ▼
Mark Hornfeld, DO's National Provider Identifier (NPI) is 1467428573, issued on 02/28/2006.
Does Mark Hornfeld, DO prescribe more brand-name or generic drugs? ▼
Mark Hornfeld, DO's prescribing is 41% brand-name and 59% generic drugs by claim count, with $976K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,388 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,490 Medicare Part D claims per year.
What drugs does Mark Hornfeld, DO prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Hornfeld, DO's most frequently prescribed drugs include Brimonidine Tartrate, Latanoprost, Tobramycin-Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Hornfeld, DO accept Medicare? ▼
Mark Hornfeld, DO appears in CMS Medicare data with 6,653 Part D claims and 1,158 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Hornfeld, DO's credentials? ▼
Mark Hornfeld, DO's NPI is 1467428573 with credentials DO. 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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 August 2026.