Nathan R. Grumdahl, CNP
Psychiatric/Mental Health Nurse Practitioner · Brooklyn Park, MN
Nathan R. Grumdahl, CNP is a psychiatric/mental health nurse practitioner with a practice address in Brooklyn Park, Minnesota, and NPI 1447989074, issued on Jun 8, 2022. Check the license (Minnesota 9441, as entered in NPPES) with the Minnesota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nathan R. Grumdahl
- Credential
- CNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 9441 MN
Self-reported in NPPES; status is on the state search - Practice location
- 5500 94TH Ave N, Brooklyn Park, MN 55443
- Phone
- (952) 826-8475
- Enumerated
- Jun 8, 2022
- Record last updated
- Aug 24, 2022
- Medicare enrollment
- Enrolled (PECOS I20240522003387); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 990 in Minnesota → Look up another NPI →
Also registered at 5500 94TH Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelli Baker, RNPsychiatric/Mental Health Registered Nurse1427849322
- Lisa Bauer, LICSWClinical Social Worker1477983807
- Caitlin Bishop, MA, LPCCMental Health Counselor1679051163
- Kristi Brown, M. A., LMFTMarriage & Family Therapist1811107766
- Amy Buggert, RNPsychiatric/Mental Health Registered Nurse1326819632
- Ashley Christianson, LPCC, LADCMental Health Counselor1447702279
Verify Nathan R. Grumdahl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
Search for license 9441Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
268 Medicare Part D claims for 14 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Sertraline Hcl52 claims
- Lamotrigine38 claims
- Olanzapine29 claims
- Buspirone Hcl16 claims
- Prazosin Hcl15 claims
- Mirtazapine14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- St Croix Psychiatric LLCBrooklyn Park, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan R. Grumdahl among 990 psychiatric/mental health nurse practitioner records in Minnesota
Nathan R. Grumdahl, CNP is one of 990 psychiatric/mental health nurse practitioner records with a practice address in Minnesota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 60% of them.
- NPI issued2022 · 60% of these records are older, 32% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2022 · median 2021 among the 675 with a school on file
- Record last updated2022 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 psychiatric/mental health nurse practitioner records list a practice address in Brooklyn Park
They are 13 of the 719 NPPES records with a practice address in Brooklyn Park, and 990 psychiatric/mental health nurse practitioner records in Minnesota.
All 990 in Minnesota → Every provider in Brooklyn Park → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Hannah Chau, DNPBrooklyn Park, MN 554431992223465
- Jessica DaigleBrooklyn Park, MN 554431295500353
- Olujimi DawoduBrooklyn Park, MN 554431336021138
- Chrisanna KendallBrooklyn Park, MN 554431891406476
- Sarah Marcouiller, DNPBrooklyn Park, MN 554431659741486
- Jaymie Mark, CNPBrooklyn Park, MN 554431336026806
- Bonsan Saddiq, CNPMinneapolis, MN 554431033898358
- Ingrid Wyckoff, APRNBrooklyn Park, MN 554431255827481
Common questions
What is Nathan R. Grumdahl, CNP's NPI number?
Nathan R. Grumdahl, CNP's National Provider Identifier (NPI) is 1447989074, issued on Jun 8, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Nathan R. Grumdahl, CNP located?
The NPPES record lists a practice address at 5500 94TH Ave N, Brooklyn Park, MN, 55443. Phone: (952) 826-8475. Providers update this record themselves, so call before visiting.
How can I verify Nathan R. Grumdahl, CNP's license?
NPPES lists Minnesota license number 9441, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.
How much does Nathan R. Grumdahl, CNP prescribe under Medicare Part D?
In 2024, Nathan R. Grumdahl, CNP had 268 Medicare Part D claims for 14 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.