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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MRS. KIRSTEN OSEI APRN
NPI 1326456450
Nurse Practitioner - Family in Saint Louis, MO

Active since August 01, 2014PECOS Enrolled
100 S 4TH ST STE 550, SAINT LOUIS, MO 63102(866) 849-0692 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Kirsten Osei Aprn NPPES

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

MRS. KIRSTEN OSEI APRN (NPI 1326456450) is an individual family provider in Saint Louis, Missouri, licensed in Missouri (2014023973) and active in the NPI registry since August 2014. She is enrolled in Medicare PECOS and maintains a secondary practice location in Riverside.

NPPES Registry Identity

NPI1326456450
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. KIRSTEN OSEICredential: APRN
Location Address100 S 4TH ST STE 550Saint Louis, MO 63102-1897
Mailing AddressPo Box 211699Saint Paul, MN 55121-3699 · (866) 849-0692
Phone(866) 849-0692
Sole ProprietorYes
Enumeration DateAugust 1, 2014
Last NPPES UpdateOctober 7, 2026
NPPES CertifiedOctober 7, 2026
✔ NPI 1326456450 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
Licenses✔ Licensed in MO · 2014023973✔ Licensed in KS · 53-78247-032
100 S 4TH ST STE 550, Saint Louis, MO 63102
Open in Google Maps ↗

Secondary Practice Location 1

Location 14443 NW Gateway AveRiverside, MO 64150-9720 · Phone (816) 627-2050

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Kirsten Osei Aprn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Kirsten Osei reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Signify Health, LLC
542 mi
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Missouri enrollment
  • 412 clinicians in this Medicare group
NPI 1689158487 (469) 466-7007

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63102 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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.

Other Providers at the Same Location NPPES 20

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

MRS. MAURINE BETH SACHS APRN, FNP-C
Nurse Practitioner (Family)
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (866) 849-0692
DK HOME HEALTHCARE, LLC
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 643-1861
DAVIS RELIABLE HOME HEALTHCARE AGENCY
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 371-8043
DK HOME HEALTHCARE, LLC
In Home Supportive Care
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 643-1861
MS. LYNNE MARJORIE SCHIFREEN RN, FNP
Nurse Practitioner (Family)
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (866) 849-0692
MICHAEL CONNER
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 366-0000
MISSOURI PROFESSIONAL HEALTH SERVICES
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (612) 644-0026
HANNAH MARIA HARPER PA-C
Physician Assistant
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (919) 391-7202

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 Kirsten Osei's NPI number?

The NPI number for Kirsten Osei is 1326456450. It was assigned to this individual provider in the NPPES registry on August 1, 2014.

Where is Kirsten Osei located?

Kirsten Osei practices at 100 S 4th St Ste 550, Saint Louis, MO 63102. The listed phone number is (866) 849-0692.

What is Kirsten Osei's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Kirsten Osei enrolled in Medicare?

Yes. Kirsten Osei is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kirsten Osei's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kirsten Osei reassigns Medicare benefits to Signify Health, LLC (Dallas, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kirsten Osei's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Kirsten Osei was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 days 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.