Quick answers
- Which hospitals does James D. Callahan work at?
- Medicare's official clinician data lists James D. Callahan at 5 hospitals: Community Hospital North, Community Hospital of Anderson and Madison County, Community Howard Regional Health Inc., Henry County Memorial Hospital and Riverview Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James D. Callahan see patients?
- Medicare's clinician data lists 1 practice location in Indianapolis, IN. Call before your visit to confirm the address.
- What is James D. Callahan's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does James D. Callahan accept Medicare assignment?
- Yes. Medicare's clinician data says James D. Callahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for James D. Callahan?
- (317) 355-1411, as listed in official Medicare / NPI Registry data.
- What is James D. Callahan's NPI number?
- 1750311098. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James D. Callahan works
Medicare's Facility Affiliation Data lists James D. Callahan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Community Hospital NorthIndianapolis, IN · Acute Care Hospital · CCN 150169
- Community Hospital of Anderson and Madison CountyAnderson, IN · Acute Care Hospital · CCN 150113
- Community Howard Regional Health Inc.Kokomo, IN · Acute Care Hospital · CCN 150007
- Henry County Memorial HospitalNew Castle, IN · Acute Care Hospital · CCN 150030
- Riverview HealthNoblesville, IN · Acute Care Hospital · CCN 150059
Practice locations
Addresses where James D. Callahan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1500 N Ritter Ave, Community Hospital EastIndianapolis, IN 46219 (317) 355‑1411
Group practices
Medicare enrollment lists James D. Callahan as a member of this group (CMS data updated 2026-10-02).
- Community Physicians of Indiana Inc1,565 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Indianapolis
Clinicians with the same Medicare primary specialty in Indianapolis, IN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750311098 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians