Kelsey Arver Thelen, FNP, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Lansing, MI
Kelsey Arver Thelen, FNP, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Lansing, Michigan, and NPI 1447899745, issued on Jan 3, 2020. Check the license (Michigan 4704303773, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kelsey Arver Thelen
- Credential
- FNP, PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 4704303773 MI
Self-reported in NPPES; status is on the state search - Practice location
- 4136 Legacy Pkwy, Lansing, MI 48911
- Phone
- (517) 492-0517
- Enumerated
- Jan 3, 2020
- Record last updated
- Nov 10, 2025
- Fax
- (517) 882-3633
- Medicare enrollment
- Enrolled (PECOS I20200309000054); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 931 in Michigan → Look up another NPI →
Also registered at 4136 Legacy Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kayla Chapman-Shadik, LPCProfessional Counselor1477999845
- Jeremy Ducastel, NPPsychiatric/Mental Health Nurse Practitioner1457152217
- Cherie Gibbs, P.T.A.Physical Therapy Assistant1316238058
- Shelby Hope, MDPsychiatry Physician1417583378
- Deborah Mears, LMSWClinical Social Worker1902113954
- Pamela Peterson, LPCProfessional Counselor1235659996
Verify Kelsey Arver Thelen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704303773Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,056 Medicare Part D claims for 131 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Mirtazapine55 claims
- Buspirone Hcl51 claims
- Lamotrigine51 claims
- Quetiapine Fumarate42 claims
- Levothyroxine Sodium35 claims
- Olanzapine31 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
- Downriver Mental Health Clinic PCLansing, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kelsey Arver Thelen among 931 psychiatric/mental health nurse practitioner records in Michigan
Kelsey Arver Thelen, FNP, PMHNP is one of 931 psychiatric/mental health nurse practitioner records with a practice address in Michigan. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 46% of them.
- NPI issued2020 · 46% of these records are older, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2019 · median 2022 among the 570 with a school on file
- Record last updated2025 · 19% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Michigan
There are 931 psychiatric/mental health nurse practitioner records in Michigan.
All 931 in Michigan → Every provider in Lansing → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Jeremy Ducastel, NPLansing, MI 489111457152217
- Eban MackeyLansing, MI 489111558028027
- Deanna Reed, NPLansing, MI 489111306587795
- Stephanie Shafer, PMHNP-BCLansing, MI 489111386958874
- Dawn Smith, RNLansing, MI 489111255679890
- Rosario Tanguay, PMHNP-BCLansing, MI 489111063986479
- Ryan Upson, NPLansing, MI 489111891032439
- Nicole Vasher, PMHNP-BCLansing, MI 489111508468257
Common questions
What is Kelsey Arver Thelen, FNP, PMHNP's NPI number?
Kelsey Arver Thelen, FNP, PMHNP's National Provider Identifier (NPI) is 1447899745, issued on Jan 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Kelsey Arver Thelen, FNP, PMHNP located?
The NPPES record lists a practice address at 4136 Legacy Pkwy, Lansing, MI, 48911. Phone: (517) 492-0517. Providers update this record themselves, so call before visiting.
How can I verify Kelsey Arver Thelen, FNP, PMHNP's license?
NPPES lists Michigan license number 4704303773, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Kelsey Arver Thelen, FNP, PMHNP prescribe under Medicare Part D?
In 2024, Kelsey Arver Thelen, FNP, PMHNP had 1,056 Medicare Part D claims for 131 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.