2026 NPPES data Ophthalmology Physician NPI 1659433647 MD
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SAMUEL GUILLORY, MD

Ophthalmology Physician in NEW YORK, New York. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
424
Medicare Part D claims · 107 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
55%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$111.13
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SAMUEL GUILLORY, MD filed 424 Medicare Part D claims in 2023 as a Ophthalmology Physician in NEW YORK, New York, prescribing 55% generic.

424
Part D claims, 2023
55%
generic prescribing
$111.13
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.

SAMUEL GUILLORY, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

424 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

SAMUEL GUILLORY, 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 SAMUEL GUILLORY, MD?

Quality data not reported

NPI registry status

Active

Issued 12/15/2006

NPI 1659433647

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

424 70% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in New York

How Ophthalmology Physician compares to other specialties among New York providers

New York providers

Ophthalmology Physician share within New York

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within New York

Specialty board-certification context

Estimated specialty board-certified rate — Ophthalmology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ophthalmology Physician ABMS/AOA estimate

Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

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).

SAMUEL GUILLORY, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 1103 PARK AVENUE, NEW YORK, NY, 10128, with a listed phone of (212) 860-5400. NPI 1659433647 was issued on 12/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUILLORY most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 424 prescription claims written by this provider, covering 107 Medicare beneficiaries and totaling roughly $86K in drug spend, split 45% brand-name and 55% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

1103 PARK AVENUE
NEW YORK, NY 10128

Provider Details

NPI 1659433647
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 12/15/2006

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 SAMUEL GUILLORY, MD. Source: openpaymentsdata.cms.gov.

Total received

$111

Largest payer

Johnson & Johnson Surgical Vision, 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.

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 SAMUEL GUILLORY, MD. To verify SAMUEL GUILLORY, MD'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

SAMUEL GUILLORY, MD — brand share 45.0%
Specialty average (est.)

45% brand-name claims vs 55% generic, on 424 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.

424
Total Claims
$86K
Total Drug Cost
107
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
637
Total Day Supply
16,728
Brand vs Generic
45% brand / 55% generic
Brand Drug Cost
$70K
Generic Drug Cost
$16K

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
0.84
Gender Split
62% female / 38% male
Age Distribution
<65: 0, 65-74: 47, 75-84: 49, 85+: 11

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What SAMUEL GUILLORY, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Latanoprost
51
Prednisolone Acetate
35
Alphagan P
Brimonidine Tartrate
33
Tobramycin-Dexamethasone
Tobramycin/Dexamethasone
33
Combigan
Brimonidine Tartrate/Timolol
31
Ketorolac Tromethamine
26
Lumigan
Bimatoprost
24
Ofloxacin
24
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
19
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
15

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Ophthalmology Physician Overview

How SAMUEL GUILLORY, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

SAMUEL GUILLORY, MD's 424 claims are below the specialty average of 1,420.

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 GUILLORY.

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SAMUEL GUILLORY, MD's specialty?
SAMUEL GUILLORY, MD specializes in Ophthalmology Physician and practices in NEW YORK, New York. Credentials: MD.
How much does SAMUEL GUILLORY, MD prescribe under Medicare Part D?
In 2023, SAMUEL GUILLORY, MD wrote 424 Medicare Part D claims totaling $86K in drug costs for 107 beneficiaries.
Where is SAMUEL GUILLORY, MD located?
SAMUEL GUILLORY, MD is located at 1103 PARK AVENUE, NEW YORK, NY, 10128. Phone: (212) 860-5400.
What is SAMUEL GUILLORY, MD's NPI number?
SAMUEL GUILLORY, MD's National Provider Identifier (NPI) is 1659433647, issued on 12/15/2006.
Does SAMUEL GUILLORY, MD prescribe more brand-name or generic drugs?
SAMUEL GUILLORY, MD's prescribing is 45% brand-name and 55% generic drugs by claim count, with $70K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does SAMUEL GUILLORY, MD prescribe most often?
Based on 2023 Medicare Part D data, SAMUEL GUILLORY, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Alphagan P. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SAMUEL GUILLORY, MD accept Medicare?
SAMUEL GUILLORY, MD appears in CMS Medicare data with 424 Part D claims and 107 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SAMUEL GUILLORY, MD's credentials?
SAMUEL GUILLORY, MD's NPI is 1659433647 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

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