DR. MARK I SISSKIN M.D.
NPI 1922071505
Internal Medicine in Ocean, NJ
About Dr. Mark I Sisskin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK I SISSKIN M.D. (NPI 1922071505) is an individual internal medicine provider in Ocean, New Jersey, licensed in New Jersey (MA04343400) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 7
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 I Sisskin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Sisskin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Hyde Park, NY 11042
- Reassigned Medicare billing, New Jersey enrollment
- 417 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 07712 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OCEAN, NJ 07712
OCEAN, NJ 07712
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 Sisskin's NPI number?
The NPI number for Mark Sisskin is 1922071505. It was assigned to this individual provider in the NPPES registry on February 13, 2006.
Where is Mark Sisskin located?
Mark Sisskin practices at 3200 Sunset Ave Suite 100, Ocean, NJ 07712. The listed phone number is (732) 774-4114.
What is Mark Sisskin's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Sisskin enrolled in Medicare?
Yes. Mark Sisskin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Sisskin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Sisskin reassigns Medicare benefits to Optum Medical Care Of New Jersey PC (New Hyde Park, NY). 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 Mark Sisskin'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 Sisskin was last updated on October 1, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.