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DR. KAREN SCHARENBERG AMSTUTZ M.D., M.B.A.
NPI 1407983976
Pediatrics in Indianapolis, IN

Active since February 28, 2007PECOS Enrolled
1099 N MERIDIAN ST STE 1000, MP IN040L-0003, INDIANAPOLIS, IN 46204(317) 287-2039(317) 287-2621 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 7, 2023, Aug 6, 2020 (2 updates tracked since 2020).

About Dr. Karen Scharenberg Amstutz M.d., M.b.a. NPPES

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

DR. KAREN SCHARENBERG AMSTUTZ M.D., M.B.A. (NPI 1407983976) is an individual pediatrics provider in Indianapolis, Indiana, licensed in Indiana (01041864A) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1407983976
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. KAREN SCHARENBERG AMSTUTZCredential: M.D., M.B.A.
Location Address1099 N MERIDIAN ST STE 1000, MP IN040L-0003Indianapolis, IN 46204-1045
Mailing Address250 N Shadeland Ave Ste 200Indianapolis, IN 46219-4959
Phone(317) 287-2039
Fax(317) 287-2621
Sole ProprietorNo
Enumeration DateFebruary 28, 2007
Last NPPES UpdateMarch 7, 20232 updates tracked since enumeration
NPPES CertifiedAugust 6, 2020
✔ NPI 1407983976 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in IN · 01041864A✔ Licensed in IN · 01041864
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1099 N MERIDIAN ST STE 1000, Indianapolis, IN 46204
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Other Names 1

Former Name (1)Dr. Karen Lisa Scharenberg M.d.

Other Identifiers 2

Other01041864IN · Indiana Medical License
Other71117MA · Medical License, Expired

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Karen Scharenberg Amstutz M.d., M.b.a. 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 Karen Amstutz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Family Physicians, Inc.
0.7 mi
Family Medicine
1701 N SENATE BLVD
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 737 clinicians in this Medicare group
NPI 1043275787 (317) 962-2000

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 46204 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
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
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.

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 Karen Amstutz's NPI number?

The NPI number for Karen Amstutz is 1407983976. It was assigned to this individual provider in the NPPES registry on February 28, 2007. The provider is also known as Dr. Karen Lisa Scharenberg M.D..

Where is Karen Amstutz located?

Karen Amstutz practices at 1099 N Meridian St Ste 1000 Mp In040l-0003, Indianapolis, IN 46204. The listed phone number is (317) 287-2039.

What is Karen Amstutz's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Karen Amstutz enrolled in Medicare?

Yes. Karen Amstutz is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karen Amstutz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Amstutz reassigns Medicare benefits to University Family Physicians, Inc. (Indianapolis, IN). 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 Karen Amstutz'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 Karen Amstutz was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.