# John Karl Konstantin, MD

Source: https://ourhealthnetwork.com/doctor/john-konstantin-md-1548415979
NPI: 1548415979
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

John Karl Konstantin, MD is a general practice based in Oakland, CA with NPI 1548415979.

## Profile

- Primary specialty: General Practice
- Credential: MD
- Gender: Male
- Medical school: DREXEL UNIVERSITY COLLEGE OF MEDICINE
- Graduation year: 2006
- NPI: 1548415979 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1548415979))

## Practice and contact

- Address: 2584 Macarthur Blvd, Oakland, CA, 946022928
- Phone: (510) 530-5400

## Insurance accepted (1 networks)

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

- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers John Karl Konstantin, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1548415979).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 2 disclosed payments from medical industry sources totaling approximately $35.

Largest disclosed payer: QIAGEN, LLC ($35 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 General Practice doctors in OAKLAND, CA](https://ourhealthnetwork.com/general-practice/ca/oakland)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1548415979)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)