2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1356640726 M.D.,
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KHALID KAHOOK, M.D.,

Retina Specialist (Ophthalmology) Physician in NEENAH, Wisconsin. 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
214
Medicare Part D claims · 73 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$62.81
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KHALID KAHOOK, M.D., filed 214 Medicare Part D claims in 2023 as a Retina Specialist (Ophthalmology) Physician in NEENAH, Wisconsin, prescribing 65% generic.

214
Part D claims, 2023
65%
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.

KHALID KAHOOK, M.D.,'s Medicare Part D volume vs every U.S. prescriber

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

214 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 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 certification likely (heuristic — not verified)

KHALID KAHOOK, M.D., 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 KHALID KAHOOK, M.D.,?

Quality data not reported

NPI registry status

Active

Issued 03/24/2011

NPI 1356640726

Primary specialty

Retina Specialist (Ophthalmology) Physician

Niche

913 US NPIs in this specialty

Medicare Part D claims

214 62% vs specialty avg

2023 prescription claims

Specialty avg: 558

Specialty distribution in Wisconsin

How Retina Specialist (Ophthalmology) Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Retina Specialist (Ophthalmology) Physician share within Wisconsin

1. Retina Specialist (Ophthalmology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Retina Specialist (Ophthalmology) Physician share within Wisconsin

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Retina Specialist (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).

KHALID KAHOOK, M.D., appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding M.D., credentials at 200 THEDA CLARK PLAZA, NEENAH, WI, 54956, with a listed phone of (920) 751-8666. NPI 1356640726 was issued on 03/24/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KAHOOK 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 214 prescription claims written by this provider, covering 73 Medicare beneficiaries and totaling roughly $15K in drug spend, split 35% brand-name and 65% 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.

Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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

200 THEDA CLARK PLAZA
NEENAH, WI 54956

Provider Details

NPI 1356640726
Specialty Retina Specialist (Ophthalmology) Physician
Credentials M.D.,
Gender Male
NPI Issued 03/24/2011

Hospital and facility affiliations

Facilities where KHALID KAHOOK, 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.

NORTHEAST WISCONSIN RETINA ASSOCIATES SC
APPLETON, WI

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 KHALID KAHOOK, M.D.,. Source: openpaymentsdata.cms.gov.

Total received

$63

Largest payer

Regeneron Healthcare Solutions, 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 · Above average

KHALID KAHOOK, M.D., — brand share 35.0%
Specialty average (est.)

35% brand-name claims vs 65% generic, on 214 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.

214
Total Claims
$15K
Total Drug Cost
73
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
397
Total Day Supply
11,386
Brand vs Generic
35% brand / 65% generic
Brand Drug Cost
$10K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.51
Gender Split
42% female / 58% male

Top Prescribed Drugs (Medicare Part D)

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

What KHALID KAHOOK, M.D., 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
Prednisolone Acetate
43
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
33
Latanoprost
27
Brimonidine Tartrate
24
Ketorolac Tromethamine
21
Ilevro
Nepafenac
15

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

Retina Specialist (Ophthalmology) Physician Overview

How KHALID KAHOOK, M.D., fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.

913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider

KHALID KAHOOK, M.D.,'s 214 claims are below the specialty average of 558.

Nearby Retina Specialist (Ophthalmology) Physician Providers in Wisconsin

Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as KAHOOK.

Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KHALID KAHOOK, M.D.,'s specialty?
KHALID KAHOOK, M.D., specializes in Retina Specialist (Ophthalmology) Physician and practices in NEENAH, Wisconsin. Credentials: M.D.,.
How much does KHALID KAHOOK, M.D., prescribe under Medicare Part D?
In 2023, KHALID KAHOOK, M.D., wrote 214 Medicare Part D claims totaling $15K in drug costs for 73 beneficiaries.
Where is KHALID KAHOOK, M.D., located?
KHALID KAHOOK, M.D., is located at 200 THEDA CLARK PLAZA, NEENAH, WI, 54956. Phone: (920) 751-8666.
What is KHALID KAHOOK, M.D.,'s NPI number?
KHALID KAHOOK, M.D.,'s National Provider Identifier (NPI) is 1356640726, issued on 03/24/2011.
Does KHALID KAHOOK, M.D., prescribe more brand-name or generic drugs?
KHALID KAHOOK, M.D.,'s prescribing is 35% brand-name and 65% generic drugs by claim count, with $10K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US?
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does KHALID KAHOOK, M.D., prescribe most often?
Based on 2023 Medicare Part D data, KHALID KAHOOK, M.D.,'s most frequently prescribed drugs include Prednisolone Acetate, Dorzolamide-Timolol, Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KHALID KAHOOK, M.D., accept Medicare?
KHALID KAHOOK, M.D., appears in CMS Medicare data with 214 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KHALID KAHOOK, M.D.,'s credentials?
KHALID KAHOOK, M.D.,'s NPI is 1356640726 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

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