DIANE C SCHWARTZ MD
NPI 1861400764
Internal Medicine in Old Tappan, NJ
About Diane C Schwartz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANE C SCHWARTZ MD (NPI 1861400764) is an individual internal medicine provider in Old Tappan, New Jersey, licensed in New Jersey (MA072367) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Valley Hospital, and is a graduate of State University Of New York Downstate Medical Center (1992).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Diane C Schwartz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Diane Schwartz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Englewood, NJ 07631
- Reassigned Medicare billing, New Jersey enrollment
- 849 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Valley Hospital
Acute Care Hospitals · Paramus, NJEnglewood Hospital And Medical Center
Acute Care Hospitals · Englewood, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07675 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Diane Schwartz's NPI number?
The NPI number for Diane Schwartz is 1861400764. It was assigned to this individual provider in the NPPES registry on August 4, 2006. The provider is also known as Diane Carole Gagnon MD.
Where is Diane Schwartz located?
Diane Schwartz practices at 215 Old Tappan Road, Old Tappan, NJ 07675. The listed phone number is (201) 666-1000.
What is Diane Schwartz's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Diane Schwartz enrolled in Medicare?
Yes. Diane Schwartz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Diane Schwartz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Schwartz reassigns Medicare benefits to Medical Associates Of Englewood, PC (Englewood, NJ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diane Schwartz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Schwartz accept?
Health plans from Oscar Health list Diane Schwartz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Diane Schwartz affiliated with any hospitals?
According to CMS data, Diane Schwartz is affiliated with Valley Hospital and Englewood Hospital And Medical Center.
When was this NPI record last updated?
The NPPES record for Diane Schwartz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Diane C Schwartz, MD · NPI 1861400764
Internal Medicine physician in Old Tappan, New Jersey. Individual provider, active in the CMS NPPES registry since August 4, 2006.
## Identity
- **NPI:** 1861400764 (Entity type: Individual)
- **Enumerated:** August 4, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MA072367 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 215 OLD TAPPAN ROAD, Old Tappan, NJ 07675
- **Phone:** (201) 666-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Medical Associates Of Englewood, PC (NPI 1952681918, Englewood, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 1992
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN G13302
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Source: [NPI Profile](https://npiprofile.com/npi/1861400764) · Data from the CMS NPPES public registry.