Nathan Grumdahl, CNP
NPI 1447989074 · Psychiatric/Mental Health Nurse Practitioner · Brooklyn Park, MN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Grumdahl, CNP is a Psychiatric/Mental Health Nurse Practitioner provider in Brooklyn Park, MN (NPI 1447989074).
Provider details
- NPI number
- 1447989074
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Male
- Sole proprietor
- No
- License
- 9441 (MN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Sertraline Hcl | 52 |
| Lamotrigine | 38 |
| Olanzapine | 29 |
| Buspirone Hcl | 16 |
| Prazosin Hcl | 15 |
| Mirtazapine | 14 |
| Quetiapine Fumarate | 13 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphet Er | 12 |
| Gabapentin | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-08
- Last updated
- 2022-08-24
- Certified
- 2022-08-24
Frequently asked questions
- What is Nathan Grumdahl's NPI number?
- Nathan Grumdahl's National Provider Identifier (NPI) is 1447989074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Grumdahl's specialty?
- Nathan Grumdahl is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nathan Grumdahl located?
- Nathan Grumdahl's practice location on file with NPPES is 5500 94th Ave N, Brooklyn Park, MN 55443-1992.
- What is Nathan Grumdahl's phone number?
- The practice phone number listed in the NPPES registry for Nathan Grumdahl is (952) 826-8475.
- Does Nathan Grumdahl accept Medicare?
- Nathan Grumdahl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Grumdahl's NPI active?
- Yes — Nathan Grumdahl's NPI (1447989074) is active in the NPPES registry as of the last update on 2022-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.