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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.

MS. LEXI KREMER-CALLAHAN MD
NPI 1124722061
Family Medicine in Troy, IL

Active since March 27, 2023PECOS Enrolled
7342 STATE ROUTE 162, TROY, IL 62294(618) 343-3722 Get Directions Write a Review

NPPES record last updated: September 17, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 17, 2026, Aug 13, 2026, Oct 5, 2023 and 1 more (4 updates tracked since 2023).

About Ms. Lexi Kremer-callahan Md NPPES

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

MS. LEXI KREMER-CALLAHAN MD (NPI 1124722061) is an individual family medicine provider in Troy, Illinois, licensed in Illinois (036177170) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1124722061
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMS. LEXI KREMER-CALLAHANCredential: MD
Location Address7342 STATE ROUTE 162Troy, IL 62294-3162
Mailing Address7342 State Route 162Troy, IL 62294-3162 · (618) 343-3722
Phone(618) 343-3722
Sole ProprietorNo
Enumeration DateMarch 27, 2023
Last NPPES UpdateSeptember 17, 20264 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2026
✔ NPI 1124722061 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in IL · 036177170
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
7342 STATE ROUTE 162, Troy, IL 62294
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Medica and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Lexi Kremer-callahan Md 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 Lexi Kremer-callahan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sjl Health Systems Inc
63 mi
Skilled Nursing Facility
900 S CHESTNUT ST
Pana, IL 62557
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Hshs Medical Group Inc
  • 317 clinicians in this Medicare group
NPI 1215037353 (217) 562-3996

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 62294 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
$88.44 typical visit price
range $56.28 – $173.35
Typical copayment $22.11 (range $14.07 – $43.33)
Most-billed visit code 99203
Established Patient
$99.71 typical visit price
range $17.51 – $139.99
Typical copayment $24.92 (range $4.37 – $34.99)
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

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

KATELIN A KRYSTOWIAK MD
Family Medicine
7342 STATE ROUTE 162
TROY, IL 62294
Madison County (618) 343-3722

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 Lexi Kremer-callahan's NPI number?

The NPI number for Lexi Kremer-callahan is 1124722061. It was assigned to this individual provider in the NPPES registry on March 27, 2023.

Where is Lexi Kremer-callahan located?

Lexi Kremer-callahan practices at 7342 State Route 162, Troy, IL 62294. The listed phone number is (618) 343-3722.

What is Lexi Kremer-callahan's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Lexi Kremer-callahan enrolled in Medicare?

Yes. Lexi Kremer-callahan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Lexi Kremer-callahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lexi Kremer-callahan reassigns Medicare benefits to Sjl Health Systems Inc (Pana, IL). 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 Lexi Kremer-callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lexi Kremer-callahan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Medica and UnitedHealthcare list Lexi Kremer-callahan 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 Lexi Kremer-callahan was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 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.