# Mark Greenstadt, MD

Source: https://ourhealthnetwork.com/doctor/mark-greenstadt-md-1861424418
NPI: 1861424418
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

Mark Greenstadt, MD is a internal medicine based in Northridge, CA with NPI 1861424418.

## Profile

- Primary specialty: Internal Medicine
- Credential: MD
- Gender: Male
- Medical school: UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
- Graduation year: 1976
- NPI: 1861424418 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1861424418))

## Practice and contact

- Address: 18350 Roscoe Blvd, Suite 714, Northridge, CA, 913255605
- Phone: (818) 717-3021

## CMS quality measures (MIPS)

- Overall MIPS final score: 12.08/100
- Quality category score: 0.00/100
- Improvement Activities score: 0.00/100
- Cost category score: 40.2545/100

Source: CMS Quality Payment Program. MIPS scores reflect Medicare provider performance on quality, cost, and care improvement measures.

## Insurance accepted (3 networks)

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

- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 11 plans
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 1 plan

To verify a specific plan covers Mark Greenstadt, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1861424418).

## 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 $40.

Largest disclosed payer: Novo Nordisk Inc ($40 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 Internal Medicine doctors in NORTHRIDGE, CA](https://ourhealthnetwork.com/internal-medicine/ca/northridge)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1861424418)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)