David Oyer is an Endocrinology/Metabolic physician affiliated with Northwestern University. OpenAlex indexes 21 publications with 484 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
211 E Chicago Ave Ste 1700
Chicago, IL 606112672
Telephone
312-944-6677Provider last certified this registry record 27 Mar 2026.
Industry payments
16 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Novo Nordisk IncProgram year202511 payments
- Exact Sciences CorporationProgram year20252 payments
- Insulet CorporationProgram 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
42.6%Statin13.7%Atorvastatin Calcium42%Rosuvastatin Calcium38%Pravastatin Sodium10%Simvastatin10%Part D<11 patientsAngiotensin receptor blocker (ARB)7.2%Losartan Potassium50%Irbesartan24%Olmesartan Medoxomil17%Valsartan10%Part D<11 patients+ 13 more classes in this area
Metabolism & gastrointestinal
21.5%GLP-1 receptor agonist6.1%Ozempic75%Mounjaro26%Part D≥65 patientsInsulin Analog4.3%Tresiba Flextouch U-10038%Tresiba Flextouch U-20023%Humalog Kwikpen U-10014%Humalog11%Fiasp Flextouch9%Humalog Kwikpen U-2006%Part D<11 patients+ 10 more classes in this area
Nervous system
11.8%Benzodiazepine3.9%Lorazepam30%Alprazolam24%Diazepam19%Temazepam15%Clonazepam12%Part D<11 patientsSSRI2%Escitalopram Oxalate40%Sertraline Hcl21%Citalopram Hbr15%Fluoxetine Hcl13%Trazodone Hcl12%Part D<11 patients+ 11 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.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
Similar KOLs
Other experts from the same institution or the same specialty.
Clyde Yancy, MD
Northwestern University
Philip Greenland, MD
Northwestern University
Peter Kahrilas, MD
Northwestern University
Philip Gorelick, MD
Northwestern 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.”