JOHN THOMAS CALLAGHAN MD, PHD
NPI 1700825064
Internal Medicine in Indianapolis, IN
About John Thomas Callaghan Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN THOMAS CALLAGHAN MD, PHD (NPI 1700825064) is an individual internal medicine provider in Indianapolis, Indiana, licensed in Indiana (01028895A) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Indianapolis, and is a graduate of University Of Kentucky College Of Medicine (1969).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
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 Thomas Callaghan Md, Phd 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
2Medicare enrollment records show John Callaghan reassigns Medicare billing to 2 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
- 358 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 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.
Physician 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.
INDIANAPOLIS, IN 46202
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 Callaghan's NPI number?
The NPI number for John Callaghan is 1700825064. It was assigned to this individual provider in the NPPES registry on June 5, 2006.
Where is John Callaghan located?
John Callaghan practices at 1481 W 10th St, Indianapolis, IN 46202. The listed phone number is (317) 988-2624.
What is John Callaghan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Callaghan enrolled in Medicare?
Yes. John Callaghan 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 Callaghan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Callaghan reassigns Medicare benefits to 2 organizations: University Medical Diagnostic Associates, Inc. (Indianapolis, IN) and Iu Health Medical Group, 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 John Callaghan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Callaghan accept?
Health plans from Anthem Blue Cross and Blue Shield and CareSource list John Callaghan 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 John Callaghan was last updated on March 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 Thomas Callaghan, MD, PHD · NPI 1700825064
Internal Medicine physician in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since June 5, 2006.
## Identity
- **NPI:** 1700825064 (Entity type: Individual)
- **Enumerated:** June 5, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 01028895A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1481 W 10TH ST, Indianapolis, IN 46202-2803
- **Phone:** (317) 988-2624
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Medical Diagnostic Associates, Inc. (NPI 1861441537, Indianapolis, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Kentucky College Of Medicine, class of 1969
## Record status
- **NPPES last updated:** March 4, 2025
- **Other identifiers:** Other 000000487351 (IN); Medicaid 200813030 (IN)
---
Source: [NPI Profile](https://npiprofile.com/npi/1700825064) · Data from the CMS NPPES public registry.