MARK KARASIN DNP, AGACNP-BC
NPI 1831617307
Nurse Practitioner - Acute Care in Lake Hopatcong, NJ
About Mark Karasin Dnp, Agacnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK KARASIN DNP, AGACNP-BC (NPI 1831617307) is an individual acute care provider in Lake Hopatcong, New Jersey, licensed in New Jersey (26NJ00754400) and active in the NPI registry since September 2017. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
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
Mark Karasin Dnp, Agacnp-bc 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 Reassignments
2Medicare enrollment records show Mark Karasin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Somerville, NJ 08876
- Reassigned Medicare billing, New Jersey enrollment
- 259 clinicians in this Medicare group
New Brunswick, NJ 08901
- Reassigned Medicare billing, New Jersey enrollment
- 306 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Robert Wood Johnson University Hospital
Acute Care Hospitals · New Brunswick, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07849 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Karasin's NPI number?
The NPI number for Mark Karasin is 1831617307. It was assigned to this individual provider in the NPPES registry on September 5, 2017.
Where is Mark Karasin located?
Mark Karasin practices at 14 Diamond Dr, Lake Hopatcong, NJ 07849. The listed phone number is (908) 414-0110.
What is Mark Karasin's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Mark Karasin enrolled in Medicare?
Yes. Mark Karasin 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 organizations bill Medicare for Mark Karasin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Karasin reassigns Medicare benefits to 2 organizations: Rutgers Health-Rwj Neurosurgery Faculty (Somerville, NJ) and Robert Wood Johnson Medical Associates (New Brunswick, NJ). 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 Karasin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mark Karasin affiliated with any hospitals?
According to CMS data, Mark Karasin is affiliated with Robert Wood Johnson University Hospital.
When was this NPI record last updated?
The NPPES record for Mark Karasin was last updated on April 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mark Karasin, DNP, AGACNP-BC · NPI 1831617307
Acute Care physician in Lake Hopatcong, New Jersey. Individual provider, active in the CMS NPPES registry since September 5, 2017.
## Identity
- **NPI:** 1831617307 (Entity type: Individual)
- **Enumerated:** September 5, 2017
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 26NJ00754400 (New Jersey)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 14 DIAMOND DR, Lake Hopatcong, NJ 07849-2204
- **Phone:** (908) 414-0110 · **Fax:** (908) 414-0110
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Rutgers Health-Rwj Neurosurgery Faculty (NPI 1548356926, Somerville, NJ); Robert Wood Johnson Medical Associates (NPI 1902848625, New Brunswick, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** April 22, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1831617307) · Data from the CMS NPPES public registry.