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KELSEY ARVER THELEN FNP, PMHNP
NPI 1447899745
Nurse Practitioner - Psychiatric/Mental Health in Lansing, MI

Active since January 03, 2020PECOS EnrolledAccepts Medicare Assignment
4136 LEGACY PKWY, LANSING, MI 48911(517) 492-0517(517) 882-3633 Get Directions Write a Review

NPPES record last updated: November 10, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 10, 2025, Feb 7, 2020, Jan 3, 2020 (3 updates tracked since 2020).

About Kelsey Arver Thelen Fnp, Pmhnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KELSEY ARVER THELEN FNP, PMHNP (NPI 1447899745) is an individual psychiatric/mental health provider in Lansing, Michigan, licensed in Michigan (4704303773) and active in the NPI registry since January 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1447899745
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameKELSEY ARVER THELENCredential: FNP, PMHNP
Location Address4136 LEGACY PKWYLansing, MI 48911-4265
Mailing Address877 Cedar TrlFowler, MI 48835-9140 · (269) 830-7665
Phone(517) 492-0517
Fax(517) 882-3633
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJanuary 3, 2020
Last NPPES UpdateNovember 10, 20253 updates tracked since enumeration
NPPES CertifiedNovember 10, 2025
✔ NPI 1447899745 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in MI · 4704303773
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 4704303773 (MI)
4136 LEGACY PKWY, Lansing, MI 48911
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Kelsey Arver Thelen Fnp, Pmhnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9234567173
PECOS Enrollment IDI20200309000054
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48911 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.74 typical visit price
range $54.34 – $166.68
Typical copayment $21.18 (range $13.58 – $41.67)
Most-billed visit code 99203
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier11 claims11 services$185.29 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROSARIO TANGUAY PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (517) 492-0517
PRIMARY CARE PHYSICIAN NETWORK P C
Internal Medicine
4136 LEGACY PKWY, SUITE 110
LANSING, MI 48911
Ingham County (517) 206-1388
KRISTA MARIE STEVENS LMSW
Social Worker (Clinical)
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (517) 882-3732
SARA ZIEL LMSW
Social Worker (Clinical)
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (517) 882-3732
PAMELA SUE PETERSON LPC
Counselor (Professional)
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (517) 882-3732
COURTNEY LEIGH YOST LPC, NCC
Counselor (Professional)
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (810) 215-9581
CHERIE MARIE GIBBS P.T.A.
Physical Therapy Assistant
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (248) 520-4997
DR. RAED HIKMET-HABIB YOUSIF MD , MS
Psychiatry & Neurology (Psychiatry)
4136 LEGACY PKWY
LANSING, MI 48911
Ingham County (517) 882-3732

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kelsey Thelen's NPI number?

The NPI number for Kelsey Thelen is 1447899745. It was assigned to this individual provider in the NPPES registry on January 3, 2020.

Where is Kelsey Thelen located?

Kelsey Thelen practices at 4136 Legacy Pkwy, Lansing, MI 48911. The listed phone number is (517) 492-0517.

What is Kelsey Thelen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Kelsey Thelen enrolled in Medicare?

Yes. Kelsey Thelen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Kelsey Thelen accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community, Priority Health and UnitedHealthcare list Kelsey Thelen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Kelsey Thelen was last updated on November 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.