William Katkov is a Gastroenterology physician affiliated with Saint John's Health Center. OpenAlex indexes 22 publications with 589 citations (h-index 10).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex.
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
2001 Santa Monica Blvd
Suite 360w
Santa Monica, CA 904042102
Telephone
310-453-1871Registry record last updated 19 Dec 2007.
Industry payments
25 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- ABBVIE INC.Program year202518 payments
- Ardelyx, Inc.Program year20255 payments
- Janssen Biotech, Inc.Program year20252 payments
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.
Metabolism & gastrointestinal
82.8%Proton pump inhibitor40%Omeprazole52%Pantoprazole Sodium48%Part D≥19 patientsH2 blocker13.3%Famotidine100%Part D≥12 patients+ 4 more classes in this area
Respiratory
11.2%Corticosteroid11.2%Budesonide Ec100%Part D<11 patientsNervous system
6%Tricyclic Antidepressant6%Nortriptyline Hcl100%Part D<11 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.
- The impact of an educational program on HCV patient outcomes using boceprevir in community practices (OPTIMAL trial)
Therapeutic Advances in Gastroenterology
2015 - Boceprevir (BOC) in Community Practice: Interim Results on Early Response and Safety from the OPTIMAL Trial
The American Journal of Gastroenterology
2013 - Methotrexate in Crohn's disease: results of a randomized, double-blind, placebo-controlled trial.
PubMed
1999
Similar KOLs
Other experts from the same institution or the same specialty.
Richard Essner, MD
Saint John's Health Center
Jennifer Linehan, MD
Saint John's Health Center
Dean Nora, MD
Saint John's Health Center
Carol Nishikubo, MD
Saint John's Health Center
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.”