DR. MARK HAROLD SWARTZ M.D.
NPI 1275634651
Internal Medicine - Cardiovascular Disease in New York, NY
About Dr. Mark Harold Swartz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK HAROLD SWARTZ M.D. (NPI 1275634651) is an individual cardiovascular disease provider in New York, New York, licensed in New York (120783) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Mark Harold Swartz M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Mark Swartz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10035
- Reassigned Medicare billing, New York enrollment
- 41 clinicians in this Medicare group
New York, NY 10037
- Reassigned Medicare billing, New York enrollment
- 676 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 623 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10035 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10035
NEW YORK, NY 10035
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 Mark Swartz's NPI number?
The NPI number for Mark Swartz is 1275634651. It was assigned to this individual provider in the NPPES registry on September 26, 2006.
Where is Mark Swartz located?
Mark Swartz practices at 55 E 124th St, New York, NY 10035. The listed phone number is (212) 410-8457.
What is Mark Swartz's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Mark Swartz enrolled in Medicare?
Yes. Mark Swartz is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Swartz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Swartz reassigns Medicare benefits to 3 organizations: Foot Clinics Of New York (New York, NY), Harlem Medical Associates PC (New York, NY) and Metropolitan Medical Practice Plan PC (New York, NY). Each 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 Mark Swartz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mark Swartz was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Mark Harold Swartz, M.D. · NPI 1275634651
Cardiovascular Disease physician in New York, New York. Individual provider, active in the CMS NPPES registry since September 26, 2006.
## Identity
- **NPI:** 1275634651 (Entity type: Individual)
- **Enumerated:** September 26, 2006
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 120783 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 E 124TH ST, New York, NY 10035-1815
- **Phone:** (212) 410-8457
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Foot Clinics Of New York (NPI 1780616763, New York, NY); Harlem Medical Associates PC (NPI 1487957692, New York, NY); Metropolitan Medical Practice Plan PC (NPI 1306138383, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1275634651) · Data from the CMS NPPES public registry.