Marcella Walker is an Endocrinology/Metabolic physician affiliated with Columbia University. OpenAlex indexes 111 publications with 4,597 citations (h-index 36); ClinicalTrials.gov lists 1 registered study matched to this name.
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 fundingClinical trials
- Combination Risedronate - Parathyroid Hormone Trial in Male Osteoporosis
Sponsor: Columbia 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.
Medicare prescribing footprint (2023)
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.
Hormonal (systemic)
65.6%l-Thyroxine54.7%Levothyroxine Sodium61%Synthroid39%Part D<11 patientsParathyroid Hormone-Related Peptide Analog10.9%Tymlos100%Part D<11 patientsMusculoskeletal
34.4%Bisphosphonates34.4%Risedronate Sodium100%Part D≥12 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.
NIH funding
5 NIH research awards on record, funded 2007–2026 per NIH RePORTER. The latest:
- Subchondral Trabecular Plate and Rod Abnormalities in Human Osteoarthritis
Columbia University Health Sciences
FY2026$651,317R01AR080135
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.
- Classical and Nonclassical Manifestations of Primary Hyperparathyroidism
Journal of Bone and Mineral Research
2020
Similar KOLs
Other experts from the same institution or the same specialty.
Serge Przedborski, MD, PhD
Columbia University
Shonni Silverberg, MD
Columbia University
Andrew Lassman, MD
Columbia University
Conrad Blum, MD
Columbia University
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.”