MARK RANDOLPH RISER DO
NPI 1457309619
Emergency Medicine in Parsippany, NJ
About Mark Randolph Riser Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK RANDOLPH RISER DO (NPI 1457309619) is an individual emergency medicine provider in Parsippany, New Jersey, licensed in New York (268189-1) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Landmark Medical Center, and maintains a secondary practice location in Woonsocket.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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 Randolph Riser Do 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
10Medicare enrollment records show Mark Riser reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 clinicians in this Medicare group
Langhorne, PA 19047
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Emergency Care Services Of Pennsylvania PC
- 329 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 356 clinicians in this Medicare group
Scranton, PA 18510
- Reassigned Medicare billing, Pennsylvania enrollment
- 111 clinicians in this Medicare group
Hanover, PA 17331
- Reassigned Medicare billing, Pennsylvania enrollment
- 298 clinicians in this Medicare group
Woonsocket, RI 02895
- Reassigned Medicare billing, Rhode Island enrollment
- 50 clinicians in this Medicare group
Iola, WI 54945
- Reassigned Medicare billing, Wisconsin enrollment
- 935 clinicians in this Medicare group
Eagle River, WI 54521
- Reassigned Medicare billing, Wisconsin enrollment
- 262 clinicians in this Medicare group
Merrill, WI 54452
- Reassigned Medicare billing, Wisconsin enrollment
- 351 clinicians in this Medicare group
Woodruff, WI 54568
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Howard Young Medical Center Inc Of Woodruff Wisconsin
- 358 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 6
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.
Landmark Medical Center
Acute Care Hospitals · Woonsocket, RIAspirus Merrill Hospital
Critical Access Hospitals · Merrill, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07054 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
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 Mark Riser's NPI number?
The NPI number for Mark Riser is 1457309619. It was assigned to this individual provider in the NPPES registry on May 4, 2006.
Where is Mark Riser located?
Mark Riser practices at 3 Century Dr, Parsippany, NJ 07054. The listed phone number is (973) 740-0607.
What is Mark Riser's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Riser enrolled in Medicare?
Yes. Mark Riser 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 Riser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Riser reassigns Medicare benefits to 10 organizations: Fpa Hospital Based (New York, NY), Emergency Care Services Of Pennsylvania, P.C. (Langhorne, PA), Emergency Physician Services Of New York, P.C. (Poughkeepsie, NY), Pennsylvania Physician Services, LLC (Scranton, PA), Emergency Physician Associates Of Pennsylvania, PC (Hanover, PA) and 5 more organizations, listed in the Medicare section above. 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 Riser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mark Riser affiliated with any hospitals?
According to CMS data, Mark Riser is affiliated with Landmark Medical Center and Aspirus Merrill Hospital.
When was this NPI record last updated?
The NPPES record for Mark Riser was last updated on May 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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 Randolph Riser, DO · NPI 1457309619
Emergency Medicine physician in Parsippany, New Jersey. Individual provider, active in the CMS NPPES registry since May 4, 2006.
## Identity
- **NPI:** 1457309619 (Entity type: Individual)
- **Enumerated:** May 4, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 268189-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 3 CENTURY DR, Parsippany, NJ 07054-4610
- **Phone:** (973) 740-0607
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): Fpa Hospital Based (NPI 1205179140, New York, NY); Emergency Care Services Of Pennsylvania, P.C. (NPI 1114955010, Langhorne, PA); Emergency Physician Services Of New York, P.C. (NPI 1093759847, Poughkeepsie, NY); Pennsylvania Physician Services, LLC (NPI 1154720423, Scranton, PA); Emergency Physician Associates Of Pennsylvania, PC (NPI 1619990900, Hanover, PA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Kansas City University Of Med & Biosciences, College Of Osteo Med, class of 1995
## Record status
- **NPPES last updated:** May 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1457309619) · Data from the CMS NPPES public registry.