Quick answers
- Does Mamawa Hollendyke accept Medicare assignment?
- Yes. Medicare's clinician data says Mamawa Hollendyke accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Mamawa Hollendyke's NPI number?
- 1598446643. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mamawa Hollendyke works
Medicare's Facility Affiliation Data lists Mamawa Hollendyke at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310001
- Hospital for Special SurgeryNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 330270
Practice locations
Addresses where Mamawa Hollendyke is enrolled with Medicare (CMS data updated October 2, 2026).
- 1233 2nd AveNew York, NY 10065 (212) 606‑1036
- 30 Prospect AveHackensack, NJ 07601 (201) 488‑0066
- 535 E 70th StNew York, NY 10021 (212) 606‑1206
Group practices
Medicare enrollment lists Mamawa Hollendyke as a member of these groups (CMS data updated October 2, 2026).
- New Jersey Healthcare Specialists PC561 clinicians in the group
- East River Medical Associates PC116 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), New York →
Other nurse anesthetists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in New Jersey Healthcare Specialists PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2025 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598446643 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians