# David S Oyer, MD

Source: https://ourhealthnetwork.com/doctor/david-oyer-md-1134226467
NPI: 1134226467
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

David S Oyer, MD is a endocrinology based in Chicago, IL with NPI 1134226467.

## Profile

- Primary specialty: Endocrinology
- Secondary specialties: INTERNAL MEDICINE
- Credential: MD
- Gender: Male
- Medical school: HARVARD MEDICAL SCHOOL
- Graduation year: 1969
- NPI: 1134226467 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1134226467))

## Practice and contact

- Address: 211 E Chicago Ave, Suite 1700, Chicago, IL, 606112672
- Phone: (312) 255-9999

## Insurance accepted (4 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [HCSC: BCBS Illinois](https://ourhealthnetwork.com/insurance/hcsc-bcbs-illinois) — 78 plans
- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 17 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 6 plans
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers David S Oyer, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1134226467).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 29 disclosed payments from medical industry sources totaling approximately $745.

Largest disclosed payer: Novo Nordisk Inc ($527 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Endocrinology doctors in CHICAGO, IL](https://ourhealthnetwork.com/endocrinology/il/chicago)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1134226467)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)