NATHANAEL M LARSEN (PH.D.) – Clinical Psychologist, NPI 1912954728
Clinical Psychologist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,120 CLINICAL PSYCHOLOGIST in MN
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Provider Addresses for NATHANAEL M LARSEN (PH.D.)
23355 OAKVIEW HEIGHTS DR
FERGUS FALLS, MN 565378163
Phone:
Type: Mailing
126, East Alcott Avenue, Fergus Falls, Otter Tail County, Minnesota, 56537, United States
FERGUS FALLS, MN 565372903
Phone: (218) 736-6987
Fax: (218) 736-6980
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2006-07-19
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20060719000173 | I | Clinical Psychologist | MN | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 90834 | Psychotherapy, 45 minutes | 115 | 25 | $0 |
| 90832 | Psychotherapy, 30 minutes | 88 | 21 | $0 |
| 90791 | Psychiatric diagnostic evaluation | 19 | 19 | $0 |
Insurance plans in this area (ZIP 56537)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MN | |
| - | MN | |
| Mental Health Counselor | MN | |
| Clinical Social Worker | ND | |
| Clinical Social Worker | TX | |
| Mental Health Counselor | MN | |
| Mental Health Counselor | MN | |
| P S Y C H I A T R Y | MN | |
| Mental Health Counselor | MN | |
| Nurse Practitioner | MN |
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