Daniel Grinnan is a Respiratory physician affiliated with Virginia Commonwealth University. OpenAlex indexes 47 publications with 758 citations (h-index 13); ClinicalTrials.gov lists 1 registered study matched to this name.
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
1250 E Marshall Street
Internal Medicine Pulmonary
Richmond, VA 232980050
Telephone
804-828-9071Registry record last updated 8 Jul 2007.
Clinical trials
- Pilot Study of the Safety and Efficacy of Carvedilol in Pulmonary Arterial Hypertension
Sponsor: Virginia Commonwealth University
Registered studies on ClinicalTrials.gov where the overall official or a site investigator name-matches this physician, confirmed against known institution/geography. Latest few shown; the full list is part of the full profile.
Industry payments
6 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- United Therapeutics CorporationProgram year20251 payment
- Sandoz Inc.Program year20251 payment
- United Therapeutics CorporationProgram year20241 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.
Respiratory
33.4%Corticosteroid16.2%Trelegy Ellipta41%Breo Ellipta22%Fluticasone Propionate18%Symbicort10%Arnuity Ellipta5%Budesonide-Formoterol Fumarate5%Part D<11 patientsbeta2-Adrenergic Agonist9.1%Albuterol Sulfate Hfa85%Ventolin Hfa15%Part D<11 patients+ 3 more classes in this area
Cardiovascular
17.5%Aldosterone antagonist (MRA)4.8%Spironolactone100%Part D≥29 patientsEndothelin Receptor Antagonist4.5%Ambrisentan46%Opsumit43%Letairis11%Part D<11 patients+ 5 more classes in this area
Metabolism & gastrointestinal
15.9%Corticosteroid6.2%Prednisone100%Part D≥59 patientsSGLT2 inhibitor6%Jardiance93%Farxiga7%Part D<11 patients+ 3 more classes 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.
NIH funding
1 NIH research award on record, funded 2008–2010 per NIH RePORTER. The latest:
- THE RETROSPECTIVE AND PROSPECTIVE ANALYSIS OF A COHORT OF PATIENTS WITH
Virginia Commonwealth University
FY2010$9,825M01RR000065 - THE RETROSPECTIVE AND PROSPECTIVE ANALYSIS OF A COHORT OF PATIENTS WITH
Virginia Commonwealth University
FY2009$47,121M01RR000065 - THE RETROSPECTIVE AND PROSPECTIVE ANALYSIS OF A COHORT OF PATIENTS WITH
Virginia Commonwealth University
FY2008$4,551M01RR000065
Awards in the NIH RePORTER records where a principal investigator name matches this physician at an organization in their practice state. Latest award years shown; each row links to the project record on RePORTER.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- The landscape of referrals for lung transplantation in pulmonary arterial hypertension: A report from the Pulmonary Hypertension Association Registry
The Journal of Heart and Lung Transplantation
2025 - Anticoagulation in pulmonary arterial hypertension - association with mortality, healthcare utilization, and quality of life: The Pulmonary Hypertension Association Registry (PHAR)
The Journal of Heart and Lung Transplantation
2022
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Robert Delorenzo, 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.”