Karen Fagan is a Respiratory physician affiliated with University of South Alabama. OpenAlex indexes 124 publications with 7,124 citations (h-index 33).
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
2150 Pennsylvania Ave NW
Washington, DC 200373201
Telephone
202-741-3540Provider last certified this registry record 6 Aug 2024.
Industry payments
36 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- AstraZeneca Pharmaceuticals LPProgram year20254 payments
- JAZZ PHARMACEUTICALS INC.Program year20251 payment
- Electromed, 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.
Cardiovascular
48.7%Endothelin Receptor Antagonist31.8%Opsumit82%Ambrisentan18%Part D<11 patientsLoop diuretic9.6%Furosemide77%Torsemide24%Part D<11 patients+ 3 more classes in this area
Genitourinary & hormones
21.1%Phosphodiesterase 5 Inhibitor21.1%Tadalafil64%Sildenafil Citrate23%Adcirca13%Part D<11 patientsRespiratory
14.5%Leukotriene Receptor Antagonist5.6%Montelukast Sodium100%Part D<11 patientsbeta2-Adrenergic Agonist5.1%Albuterol Sulfate Hfa100%Part D<11 patients+ 1 more class in this area
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.
- Diagnosis and Treatment of Pulmonary Hypertension
American Journal of Respiratory and Critical Care Medicine
2021 - Pulmonary Hypertension—Is It the Same Disease in Young Versus Older Patients?
The American Journal of the Medical Sciences
2017
Similar KOLs
Other experts from the same institution or the same specialty.
Nasser Lakkis, MD
University of South Alabama
Errol Crook, MD
University of South Alabama
William Broughton, MD
University of South Alabama
David Gremse, MD
University of South Alabama
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.”