Melissa Sum is an Endocrinology/Metabolic physician affiliated with VA NY Harbor Healthcare System. OpenAlex indexes 28 publications with 217 citations (h-index 8).
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).
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)
44.2%l-Thyroxine41%Levothyroxine Sodium54%Synthroid46%Part D≥54 patientsParathyroid Hormone-Related Peptide Analog1.6%Tymlos100%Part D<11 patients+ 1 more class in this area
Metabolism & gastrointestinal
43.1%Biguanide (metformin)14.9%Metformin Hcl77%Metformin Hcl Er23%Part D≥32 patientsGLP-1 receptor agonist14.8%Mounjaro49%Trulicity28%Ozempic23%Part D<11 patients+ 3 more classes in this area
Cardiovascular
9.4%Statin9.4%Atorvastatin Calcium71%Rosuvastatin Calcium29%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.
- SUN-780 A Novel CASR Missense Variant c.2015C&gt;T Identified as a Cause of Familial Hypocalciuric Hypercalcemia
Journal of the Endocrine Society
2025 - Educational Case: Clinical and pathologic features of primary hyperparathyroidism
Academic Pathology
2023
Similar KOLs
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Michael Pillinger, MD
VA NY Harbor Healthcare System
Michael Simberkoff, MD
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Lois Katz, MD
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Andrea Leaf, MD
VA NY Harbor Healthcare System
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.”