JOHN ZACHARY GALLIEN MD
NPI 1235367731
Emergency Medicine in Indianapolis, IN
About John Zachary Gallien Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN ZACHARY GALLIEN MD (NPI 1235367731) is an individual emergency medicine provider in Indianapolis, Indiana, licensed in Indiana (01087817A) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Eskenazi Health, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 3
Accepted Insurance
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
John Zachary Gallien 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.
Medicare Billing Reassignments
4Medicare enrollment records show John Gallien reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 126 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 1,781 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 clinicians in this Medicare group
Bloomington, IN 47408
- Reassigned Medicare billing, Indiana enrollment
- 783 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Eskenazi Health
Acute Care Hospitals · Indianapolis, INIndiana University Health Bloomington Hospital
Acute Care Hospitals · Bloomington, INIndiana University Health
Acute Care Hospitals · Indianapolis, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 John Gallien's NPI number?
The NPI number for John Gallien is 1235367731. It was assigned to this individual provider in the NPPES registry on June 23, 2009.
Where is John Gallien located?
John Gallien practices at 720 Eskenazi Ave, Indianapolis, IN 46202. The listed phone number is (317) 639-6671.
What is John Gallien's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Gallien enrolled in Medicare?
Yes. John Gallien 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 organizations bill Medicare for John Gallien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Gallien reassigns Medicare benefits to 4 organizations: Icem-Wishard LLC (Indianapolis, IN), Indiana University Health Care Associates, Inc (Indianapolis, IN), Iu Health Medical Group, LLC (Indianapolis, IN) and Indiana University Health Southern Indiana Physicians, LLC (Bloomington, 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 John Gallien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Gallien accept?
Health plans from Anthem Blue Cross and Blue Shield list John Gallien 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.
Is John Gallien affiliated with any hospitals?
According to CMS data, John Gallien is affiliated with Eskenazi Health, Indiana University Health Bloomington Hospital and Indiana University Health.
When was this NPI record last updated?
The NPPES record for John Gallien was last updated on March 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# John Zachary Gallien, MD · NPI 1235367731
Emergency Medicine physician in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since June 23, 2009.
## Identity
- **NPI:** 1235367731 (Entity type: Individual)
- **Enumerated:** June 23, 2009
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 01087817A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 720 ESKENAZI AVE, Indianapolis, IN 46202-5187
- **Phone:** (317) 639-6671 · **Fax:** (317) 963-5492
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Icem-Wishard LLC (NPI 1629304134, Indianapolis, IN); Indiana University Health Care Associates, Inc (NPI 1902032832, Indianapolis, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN); Indiana University Health Southern Indiana Physicians, LLC (NPI 1013953983, Bloomington, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 2009
## Record status
- **NPPES last updated:** March 8, 2025
- **Other identifiers:** Medicaid 300063171 (IN); Other 000001667680 (IN); Other Q00354531 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1235367731) · Data from the CMS NPPES public registry.