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ABIGAIL F KLEMSZ MD, PHD
NPI 1912014770
Pediatrics - Developmental - Behavioral Pediatrics in Indianapolis, IN

Active since August 25, 2006PECOS Enrolled
705 RILEY HOSPITAL DR, RI 1601, INDIANAPOLIS, IN 46202(317) 944-4842(317) 948-0126 Get Directions Write a Review

NPPES record last updated: February 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 6, 2026, Nov 27, 2020 (2 updates tracked since 2020).

About Abigail F Klemsz Md, Phd NPPES

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

ABIGAIL F KLEMSZ MD, PHD (NPI 1912014770) is an individual developmental - behavioral pediatrics provider in Indianapolis, Indiana, licensed in Indiana (01044730) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Indianapolis.

NPPES Registry Identity

NPI1912014770
Entity TypeIndividualFemale
Primary Taxonomy2080P0006X
Provider Legal NameABIGAIL F KLEMSZCredential: MD, PHD
Location Address705 RILEY HOSPITAL DR, RI 1601Indianapolis, IN 46202-5109
Mailing AddressPo Box 719094Chicago, IL 60677-9318 · (317) 777-6435 · Fax (317) 777-6644
Phone(317) 944-4842
Fax(317) 948-0126
Sole ProprietorNo
Enumeration DateAugust 25, 2006
Last NPPES UpdateFebruary 13, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 13, 2026
✔ NPI 1912014770 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Developmental - Behavioral PediatricsAllopathic & Osteopathic Physicians
Taxonomy Code2080P0006X
License✔ Licensed in IN · 01044730
Definition
A developmental-behavioral specialist is a pediatrician with special training and experience who aims to foster understanding and promotion of optimal development of children and families through research, education, clinical care and advocacy efforts. This physician assists in the prevention, diagnosis, and management of developmental difficulties and problematic behaviors in children and in the family dysfunctions that compromise children's development.
705 RILEY HOSPITAL DR, Indianapolis, IN 46202
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Secondary Practice Location 1

Location 1702 N BARNHILL DR RI 1601Indianapolis, IN 46202 · Phone (317) 944-4846

Other Identifiers 4

Medicaid64017742KY
Medicaid1011390VT
Medicaid200160120IN
Medicaid4849587MI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health 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)

Abigail F Klemsz Md, Phd 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 Reassignments

2

Medicare enrollment records show Abigail Klemsz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Pediatric Associates, Inc.
Same address
Pediatrics
705 RILEY HOSPITAL DR, RR 127
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 294 clinicians in this Medicare group
NPI 1457396541 (317) 777-6435
Iu Health Medical Group Riley Specialists, LLC
Same address
Pediatrics
705 RILEY HOSPITAL DR
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 523 clinicians in this Medicare group
NPI 1699561480 (317) 944-5000

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

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.

MOHANNAD MOALLEM M.D.
Pediatrics (Neonatal-Perinatal Medicine)
705 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 274-4779
TIA IMHOFF MCGEE FNP-BC
Nurse Practitioner (Family)
705 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 312-2204
JOSHUA WAYNE GOLLUB
Pediatrics (Neonatal-Perinatal Medicine)
705 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 274-4779
NOAH MENAKER DDS
Dentist (Pediatric Dentistry)
705 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-3865
DR. ANAS NADER ATA ALJABARI MBBS
Student in an Organized Health Care Education/Training Program
705 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (856) 398-9630
TALIA RAE BOOHER MB BCH BAO
Student in an Organized Health Care Education/Training Program
705 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-7571
JANET R SHAVER NP
Nurse Practitioner (Pediatrics)
705 RILEY HOSPITAL DR, RI 1601
INDIANAPOLIS, IN 46202
Marion County (317) 944-4842
UNIVERSITY PEDIATRIC DENTISTRY ASSOCIATES
Dentist (Pediatric Dentistry)
705 RILEY HOSPITAL DR, ROC - SUITE 4205
INDIANAPOLIS, IN 46202
Marion County (317) 944-9604

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 Abigail Klemsz's NPI number?

The NPI number for Abigail Klemsz is 1912014770. It was assigned to this individual provider in the NPPES registry on August 25, 2006.

Where is Abigail Klemsz located?

Abigail Klemsz practices at 705 Riley Hospital Dr Ri 1601, Indianapolis, IN 46202. The listed phone number is (317) 944-4842.

What is Abigail Klemsz's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Developmental - Behavioral Pediatrics, with taxonomy code 2080P0006X.

Is Abigail Klemsz enrolled in Medicare?

Yes. Abigail Klemsz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Abigail Klemsz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Abigail Klemsz reassigns Medicare benefits to 2 organizations: University Pediatric Associates, Inc. (Indianapolis, IN) and Iu Health Medical Group Riley Specialists, LLC (Indianapolis, IN). Each 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 Abigail Klemsz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Abigail Klemsz accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 1 other insurer list Abigail Klemsz 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 Abigail Klemsz was last updated on February 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.