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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.

REBECCA L GRIMES LCSW
NPI 1457273500
Social Worker in Indianapolis, IN

Active since July 29, 2026PECOS Enrolled
575 RILEY HOSPITAL DR, INDIANAPOLIS, IN 46202(317) 944-5576(317) 948-3107 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 11, 2026, Jul 29, 2026 (2 updates tracked since 2026).

About Rebecca L Grimes Lcsw NPPES

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

REBECCA L GRIMES LCSW (NPI 1457273500) is an individual social worker in Indianapolis, Indiana, licensed in Indiana (34012183A) and active in the NPI registry since July 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1457273500
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameREBECCA L GRIMESCredential: LCSW
Location Address575 RILEY HOSPITAL DRIndianapolis, IN 46202-5272
Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959
Phone(317) 944-5576
Fax(317) 948-3107
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateJuly 29, 2026
Last NPPES UpdateSeptember 11, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1457273500 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in IN · 34012183A
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X · License 34012183A (IN)
575 RILEY HOSPITAL DR, Indianapolis, IN 46202
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rebecca L Grimes Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7517427420
PECOS Enrollment IDI20260831004592
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 Rebecca Grimes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Iu Health Medical Group, LLC
1.3 mi
General Practice
1701 N SENATE BLVD
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 5,212 clinicians in this Medicare group
NPI 1326893777 (317) 962-2000

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.

KRISTEN L TENTLER DO
Pediatrics (Pediatric Pulmonology)
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 948-7208
TIANQI LUO DO
Psychiatry & Neurology (Psychiatry)
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-1969
DR. LAURA BESS MD
Orthopaedic Surgery
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 948-2550
ALANA GRAY PA-C
Physician Assistant (Surgical)
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 948-2550
DR. AUDRA MARIE ST JOHN MD
Pediatrics (Pediatric Gastroenterology)
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-3774
THOMAS FISHER-HEATH DO
Pediatrics (Pediatric Hematology-Oncology)
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-2700
REBECCA TAYLOR ANDERSON MD
Urology
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-8896
DR. JOHN R EMHARDT DDS
Dentist (Pediatric Dentistry)
575 RILEY HOSPITAL DR
INDIANAPOLIS, IN 46202
Marion County (317) 944-5000

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 Rebecca Grimes's NPI number?

The NPI number for Rebecca Grimes is 1457273500. It was assigned to this individual provider in the NPPES registry on July 29, 2026.

Where is Rebecca Grimes located?

Rebecca Grimes practices at 575 Riley Hospital Dr, Indianapolis, IN 46202. The listed phone number is (317) 944-5576.

What is Rebecca Grimes's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Rebecca Grimes enrolled in Medicare?

Yes. Rebecca Grimes is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Rebecca Grimes's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Grimes reassigns Medicare benefits to Iu Health Medical Group, LLC (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 Rebecca Grimes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rebecca Grimes accept?

Health plans from Anthem Blue Cross and Blue Shield list Rebecca Grimes 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 Rebecca Grimes was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 59 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.