NPI registry status
Active
2026 NPPES data Glaucoma Specialist (Ophthalmology) Physician NPI 1518547363 MD
Verify on CMS → Benjamin Katz, MD
Glaucoma Specialist (Ophthalmology) Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 356 in Glaucoma Specialist (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
659
Medicare Part D claims · 210 beneficiaries · Glaucoma Specialist (Ophthalmology) Physician avg: 3K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$890.82
17 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
Benjamin Katz, MD filed 659 Medicare Part D claims in 2023 as a Glaucoma Specialist (Ophthalmology) Physician in Saint Louis, Missouri, prescribing 80% generic.
- 659
- Part D claims, 2023
- 80%
- 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.
Benjamin Katz, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
659 Top 31% higher than 69% 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)
Benjamin Katz, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Benjamin Katz, MD?
Quality data not reportedPrimary specialty
Glaucoma Specialist (Ophthalmology) Physician
Medicare Part D claims
659 78% vs specialty avg
Specialty distribution in Missouri
How Glaucoma Specialist (Ophthalmology) Physician compares to other specialties among Missouri 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 Glaucoma Specialist (Ophthalmology) 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).
Benjamin Katz, MD appears in the CMS NPPES registry as a Glaucoma Specialist (Ophthalmology) Physician provider holding MD credentials at 4901 FOREST PARK AVE, Saint Louis, MO, 63108, with a listed phone of (314) 362-3937. NPI 1518547363 was issued on 04/14/2021.
Medicare Part D records for calendar year 2023 show 659 prescription claims written by this provider, covering 210 Medicare beneficiaries and totaling roughly $47K in drug spend, split 20% brand-name and 80% generic by claim count.
Glaucoma Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 356 enrolled providers across 42 states and an average of 2,962 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 | 1518547363 |
|---|---|
| Specialty | Glaucoma Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/14/2021 |
Hospital and facility affiliations
Facilities where Benjamin Katz, 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.
Washington University
Saint Louis, MO
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 Benjamin Katz, MD. Source: openpaymentsdata.cms.gov.
Total received
$891
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.
Brand vs generic prescribing mix · Typical
Benjamin Katz, MD - brand share 20.0%
Glaucoma Specialist (Ophthalmology) Physician average
20% brand-name claims vs 80% generic, on 659 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.
659
Total Claims
$47K
Total Drug Cost
210
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,163
- Total Day Supply
- 33,032
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $30K
- Generic Drug Cost
- $16K
Patient Demographics
- Average Patient Age
- 75.3 years
- Avg HCC Risk Score
- 1.62
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 27, 65-74: 75, 75-84: 64, 85+: 44
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Benjamin Katz, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
202 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
103 claims
- Brimonidine Tartrate
Brimonidine Tartrate
94 claims
- Dorzolamide Hcl 50
Dorzolamide Hcl
50 claims
- Prednisolone Acetate 39
Prednisolone Acetate
39 claims
- Timolol Maleate 30
Timolol Maleate
30 claims
- Erythromycin 21
Erythromycin
21 claims
- Moxifloxacin 14
Moxifloxacin
14 claims
| Drug | Claims |
|---|---|
| Latanoprost | 202 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 103 |
| Brimonidine Tartrate | 94 |
| Dorzolamide Hcl | 50 |
| Prednisolone Acetate | 39 |
| Timolol Maleate | 30 |
| Erythromycin Erythromycin Base | 21 |
| Moxifloxacin Moxifloxacin Hcl | 14 |
| Lumigan Bimatoprost | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Glaucoma Specialist (Ophthalmology) Physician in MO →
All providers in Missouri →
Compare specialties →
Glaucoma Specialist (Ophthalmology) Physician Overview
How Benjamin Katz, MD fits within the Glaucoma Specialist (Ophthalmology) Physician landscape nationally.
356
Glaucoma Specialist (Ophthalmology) Physician Providers in US
42
States with Glaucoma Specialist (Ophthalmology) Physician
2,962
Avg Claims per Provider
Benjamin Katz, MD's 659 claims are below the specialty average of 2,962.
Nearby Glaucoma Specialist (Ophthalmology) Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Katz.
Dr. Abhinav Golla
MD
Columbia, MO
Dr. Ariana Levin
MD
Saint Louis, MO
Dr. James Liu
MD
Saint Louis, MO
Dr. Sharon Sabapathypillai
MD
Saint Louis, MO
Dr. Arsham Sheybani
MD
Saint Louis, MO
Compare Glaucoma Specialist (Ophthalmology) 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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Glaucoma Specialist (Ophthalmology) 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 Benjamin Katz, MD's specialty? ▼
Benjamin Katz, MD specializes in Glaucoma Specialist (Ophthalmology) Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Benjamin Katz, MD prescribe under Medicare Part D? ▼
In 2023, Benjamin Katz, MD wrote 659 Medicare Part D claims totaling $47K in drug costs for 210 beneficiaries.
Where is Benjamin Katz, MD located? ▼
Benjamin Katz, MD is located at 4901 FOREST PARK AVE, Saint Louis, MO, 63108. Phone: (314) 362-3937.
What is Benjamin Katz, MD's NPI number? ▼
Benjamin Katz, MD's National Provider Identifier (NPI) is 1518547363, issued on 04/14/2021.
Does Benjamin Katz, MD prescribe more brand-name or generic drugs? ▼
Benjamin Katz, MD's prescribing is 20% brand-name and 80% generic drugs by claim count, with $30K in brand drug costs.
How many Glaucoma Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 356 Glaucoma Specialist (Ophthalmology) Physician providers across 42 states in the US. The average Glaucoma Specialist (Ophthalmology) Physician provider writes 2,962 Medicare Part D claims per year.
What drugs does Benjamin Katz, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Benjamin Katz, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Benjamin Katz, MD accept Medicare? ▼
Benjamin Katz, MD appears in CMS Medicare data with 659 Part D claims and 210 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Benjamin Katz, MD's credentials? ▼
Benjamin Katz, MD's NPI is 1518547363 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.