Kelsey Thelen, FNP, PMHNP
NPI 1447899745 · Psychiatric/Mental Health Nurse Practitioner · Lansing, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kelsey Thelen, FNP, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Lansing, MI (NPI 1447899745).
Provider details
- NPI number
- 1447899745
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP, PMHNP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704303773 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
6 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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mirtazapine | 55 | 21 |
| Lamotrigine | 51 | 16 |
| Buspirone Hcl | 51 | 20 |
| Quetiapine Fumarate | 42 | — |
| Levothyroxine Sodium | 35 | 13 |
| Olanzapine | 31 | — |
| Sertraline Hcl | 27 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-01-03
- Last updated
- 2025-11-10
- Certified
- 2025-11-10
Frequently asked questions
- What is Kelsey Thelen's NPI number?
- Kelsey Thelen's National Provider Identifier (NPI) is 1447899745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kelsey Thelen's specialty?
- Kelsey Thelen is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kelsey Thelen located?
- Kelsey Thelen's practice location on file with NPPES is 4136 Legacy Pkwy, Lansing, MI 48911-4265.
- What is Kelsey Thelen's phone number?
- The practice phone number listed in the NPPES registry for Kelsey Thelen is (517) 492-0517.
- Does Kelsey Thelen accept Medicare?
- Kelsey Thelen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kelsey Thelen's NPI active?
- Yes — Kelsey Thelen's NPI (1447899745) is active in the NPPES registry as of the last update on 2025-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.