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DIANA HALLORAN MD
NPI 1548897325
Internal Medicine - Hospice and Palliative Medicine in Indianapolis, IN

Active since March 24, 2020PECOS EnrolledAccepts Medicare Assignment
720 ESKENAZI AVE FL 2, INDIANAPOLIS, IN 46202(317) 278-5316 Get Directions Write a Review

NPPES record last updated: August 22, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 28, 2024, Jul 4, 2020, Mar 24, 2020 (3 updates tracked since 2020).

About Diana Halloran Md NPPES

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

DIANA HALLORAN MD (NPI 1548897325) is an individual hospice and palliative medicine provider in Indianapolis, Indiana, licensed in Indiana (01093754A) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Castro Valley, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1548897325
Entity TypeIndividualFemale
Primary Taxonomy207RH0002X
Provider Legal NameDIANA HALLORANCredential: MD
Location Address720 ESKENAZI AVE FL 2Indianapolis, IN 46202-5189
Mailing Address720 Eskenazi Ave Fl 2Indianapolis, IN 46202-5189 · (317) 278-5316
Phone(317) 278-5316
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMarch 24, 2020
Last NPPES UpdateAugust 22, 20253 updates tracked since enumeration
NPPES CertifiedAugust 22, 2025
✔ NPI 1548897325 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
Licenses✔ Licensed in IN · 01093754A✔ Licensed in CA · A202195
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedEmergency MedicineTaxonomy 207P00000X · License 125075620 (IL), A202195 (CA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
720 ESKENAZI AVE FL 2, Indianapolis, IN 46202
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Secondary Practice Location 1

Location 120101 Lake Chabot Rd Fl 4Castro Valley, CA 94546-5305 · Phone (510) 204-3410

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diana Halloran Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820412646
PECOS Enrollment IDI20250903004018
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 Diana Halloran reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation
1,884 mi
Multi-Specialty
1315 ALHAMBRA BLVD STE 210
Sacramento, CA 95816
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1003267196 (916) 732-4380

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 18

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

AMBER THOMAS PA
Physician Assistant
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000
MS. STEPHANIE JANE DEMARIS LCSW
Social Worker (Clinical)
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000
MELANIE DAWN MONTEITH RD, CD
Dietitian, Registered
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000
TEHAAM WARAICH DO
Internal Medicine
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000
BURKE W MAMLIN MD
Internal Medicine
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000
CHRISTOPHER SCOTT EDDY MD
Anesthesiology
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-5386
STACEY CHARLES MD
Family Medicine
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000
DR. SAURA FORTIN ERAZO M.D.
Family Medicine
720 ESKENAZI AVE FL 2
INDIANAPOLIS, IN 46202
Marion County (317) 880-7000

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 Diana Halloran's NPI number?

The NPI number for Diana Halloran is 1548897325. It was assigned to this individual provider in the NPPES registry on March 24, 2020.

Where is Diana Halloran located?

Diana Halloran practices at 720 Eskenazi Ave Fl 2, Indianapolis, IN 46202. The listed phone number is (317) 278-5316.

What is Diana Halloran's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Diana Halloran enrolled in Medicare?

Yes. Diana Halloran is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Diana Halloran's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Halloran reassigns Medicare benefits to Sutter Bay Medical Foundation (Sacramento, CA). 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 Diana Halloran'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 Diana Halloran was last updated on August 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.