MAMAWA MASSALLY HOLLENDYKE DNP, CRNA
NPI 1598446643
Nurse Anesthetist, Certified Registered in Hackensack, NJ
About Mamawa Massally Hollendyke Dnp, Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAMAWA MASSALLY HOLLENDYKE DNP, CRNA (NPI 1598446643) is an individual nurse anesthetist, certified registered in Hackensack, New Jersey, licensed in New Jersey (26NJ15344800) and active in the NPI registry since July 2023. She is enrolled in Medicare PECOS, is affiliated with Hackensack University Medical Center, and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Mamawa Massally Hollendyke Dnp, Crna 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 Mamawa Hollendyke reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hackensack, NJ 07601
- Reassigned Medicare billing, New Jersey enrollment
- 781 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: East River Medical Associates PC
- 137 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hackensack University Medical Center
Acute Care Hospitals · Hackensack, NJHospital For Special Surgery
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07601 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HACKENSACK, NJ 07601
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 Mamawa Hollendyke's NPI number?
The NPI number for Mamawa Hollendyke is 1598446643. It was assigned to this individual provider in the NPPES registry on July 31, 2023. The provider is also known as Mamawa Sao Konuwa.
Where is Mamawa Hollendyke located?
Mamawa Hollendyke practices at 30 Prospect Ave, Hackensack, NJ 07601. The listed phone number is (000) 000-0000.
What is Mamawa Hollendyke's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mamawa Hollendyke enrolled in Medicare?
Yes. Mamawa Hollendyke 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 Mamawa Hollendyke's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mamawa Hollendyke reassigns Medicare benefits to 2 organizations: New Jersey Healthcare Specialists PC (Hackensack, NJ) and East River Medical Associates P.C. (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 Mamawa Hollendyke's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mamawa Hollendyke affiliated with any hospitals?
According to CMS data, Mamawa Hollendyke is affiliated with Hackensack University Medical Center and Hospital For Special Surgery.
When was this NPI record last updated?
The NPPES record for Mamawa Hollendyke was last updated on June 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Mamawa Massally Hollendyke, DNP, CRNA · NPI 1598446643
Nurse Anesthetist, Certified Registered physician in Hackensack, New Jersey. Individual provider, active in the CMS NPPES registry since July 31, 2023.
## Identity
- **NPI:** 1598446643 (Entity type: Individual)
- **Enumerated:** July 31, 2023
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 26NJ15344800 (New Jersey)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 30 PROSPECT AVE, Hackensack, NJ 07601-1915
- **Phone:** (000) 000-0000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): New Jersey Healthcare Specialists PC (NPI 1174585780, Hackensack, NJ); East River Medical Associates P.C. (NPI 1932162567, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** June 11, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1598446643) · Data from the CMS NPPES public registry.