Mary Granholm, RN MSN APN
NPI 1861620155 · Oncology Registered Nurse · Hackensack, NJ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Granholm, RN MSN APN is a Oncology Registered Nurse provider in Hackensack, NJ (NPI 1861620155).
Provider details
- NPI number
- 1861620155
- Entity type
- Individual
- Primary specialty
- Oncology Registered NurseNursing Service Providers
- Credential
- RN MSN APN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 26NJ00189400 (NJ)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 36 | 15 |
| Simvastatin | 18 | — |
| Clopidogrel Bisulfatebrand: Clopidogrel | 17 | — |
| Levothyroxine Sodium | 16 | — |
| Lisinopril | 16 | — |
| Metoprolol Succinate | 15 | — |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-25
- Last updated
- 2009-06-25
Frequently asked questions
- What is Mary Granholm's NPI number?
- Mary Granholm's National Provider Identifier (NPI) is 1861620155, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Granholm's specialty?
- Mary Granholm is listed in the NPPES registry with a primary specialty of Oncology Registered Nurse (Nursing Service Providers).
- Where is Mary Granholm located?
- Mary Granholm's practice location on file with NPPES is 20 Prospect Ave, Hackensack, NJ 07601-1997.
- What is Mary Granholm's phone number?
- The practice phone number listed in the NPPES registry for Mary Granholm is (201) 336-8297.
- Does Mary Granholm accept Medicare?
- Mary Granholm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Granholm's NPI active?
- Yes — Mary Granholm's NPI (1861620155) is active in the NPPES registry as of the last update on 2009-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.