Katafan Achkar is a Nephrology physician affiliated with Methodist Hospital. OpenAlex indexes 16 publications with 491 citations (h-index 9).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
600 N Kobayashi Ste 311
Webster, TX 775984841
Telephone
281-724-8296Provider last certified this registry record 28 May 2026.
Industry payments
20 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Novo Nordisk IncProgram year20252 payments
- Ascendis Pharma Endocrinology IncProgram year20252 payments
- Amgen Inc.Program year20251 payment
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Medicare prescribing footprint (2024)
The drugs this prescriber writes for Medicare patients, grouped by drug class and therapeutic area. Every percentage is a share of their total prescribing, so you can see what they prescribe most. These are proportions, not patient counts or dollar amounts. No condition is inferred: the claims record what was prescribed, never why.
Cardiovascular
73.2%Calcium channel blocker19.1%Amlodipine Besylate79%Nifedipine Er21%Part D<11 patientsThiazide-like diuretic11.2%Chlorthalidone61%Metolazone39%Part D<11 patients+ 7 more classes in this area
Metabolism & gastrointestinal
12.3%Potassium supplement4.8%Potassium Chloride100%Part D<11 patientsVitamin D3 Analog3.9%Calcitriol100%Part D<11 patients+ 1 more class in this area
Anti-infectives
8.8%Short-acting sulfonamides8.8%Sulfamethoxazole-Trimethoprim100%Part D≥19 patients
Drug classes come from the WHO ATC and U.S. National Library of Medicine (RxClass) classifications; prescribing counts come from the CMS Medicare Part D Prescribers file. Each drug is counted once, under its primary class. Medicare fee-for-service only, so no Medicare Advantage, commercial, or pediatric prescribing is included. CMS publishes this data about 17 months after the fact.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Personal viewpoint: Risk stratification and counseling of living kidney donor candidates with prediabetes
American Journal of Transplantation
2026 - Assessment of Potential Kidney Donors for Future Risk of Diabetes Using Validated Indices Derived from Oral Glucose Tolerance Test
American Journal of Transplantation
2025 - Long-Term Risks in Obese Living Kidney Donors: A Systematic Review and Meta-Analysis
American Journal of Transplantation
2025 - Percutaneous Thrombectomy of <scp>AVF</scp>: Immediate Success and Long‐term Patency Rates
Seminars in Dialysis
2014
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Jeffrey Vrabec, MD
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A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments — shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”