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CHRISTOPHER M CALLAHAN MD
NPI 1104867043
Internal Medicine - Geriatric Medicine in Indianapolis, IN

Active since June 10, 2006PECOS Enrolled
1633 N CAPITOL AVE, STE 322, INDIANAPOLIS, IN 46202(317) 962-2929(317) 962-2070 Get Directions Write a Review

NPPES record last updated: September 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 15, 2025, Nov 18, 2021, Jan 27, 2021 (3 updates tracked since 2021).

About Christopher M Callahan Md NPPES

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

CHRISTOPHER M CALLAHAN MD (NPI 1104867043) is an individual geriatric medicine provider in Indianapolis, Indiana, licensed in Indiana (01036319A) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Indianapolis.

NPPES Registry Identity

NPI1104867043
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameCHRISTOPHER M CALLAHANCredential: MD
Location Address1633 N CAPITOL AVE, STE 322Indianapolis, IN 46202-1476
Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959
Phone(317) 962-2929
Fax(317) 962-2070
Sole ProprietorNo
Enumeration DateJune 10, 2006
Last NPPES UpdateSeptember 15, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2025
✔ NPI 1104867043 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in IN · 01036319A
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal MedicineTaxonomy 207R00000X · License 01036319A (IN)
1633 N CAPITOL AVE, Indianapolis, IN 46202
Open in Google Maps ↗

Secondary Practice Location 1

Location 1720 Eskenazi AveIndianapolis, IN 46202-5187 · Phone (317) 880-7666

Other Identifiers 2

Other000000086850IN · Anthem
Medicaid100068500IN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Christopher M Callahan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

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.

New Patient
$161.76 typical visit price
range $53.07 – $161.76
Typical copayment $40.44 (range $13.26 – $40.44)
Most-billed visit code 99205
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

KYLE W BONHAM LSW
Social Worker
1633 N CAPITOL AVE, STE 300
INDIANAPOLIS, IN 46202
Marion County (317) 962-2700
JACOB EITEL M.D.
Radiology (Diagnostic Radiology)
1633 N CAPITOL AVE, METHODIST MEDICAL TOWER, STE 640
INDIANAPOLIS, IN 46202
Marion County (317) 962-8881
ROSALYN A FREEZE MSN
Nurse Practitioner
1633 N CAPITOL AVE, SUITE 700
INDIANAPOLIS, IN 46202
Marion County (317) 962-2915
MONICA LEE WASHBURN NP
Nurse Practitioner (Adult Health)
1633 N CAPITOL AVE, STE 322
INDIANAPOLIS, IN 46202
Marion County (317) 962-2929
MR. SCOTT THOMAS MICHALSKI M.S., C.G.C.
Genetic Counselor, MS
1633 N CAPITOL AVE, SUITE 468
INDIANAPOLIS, IN 46202
Marion County (317) 962-0663
MICHAEL ROBERT SUTTON M.D.
Radiology (Diagnostic Radiology)
1633 N CAPITOL AVE, SUITE 640
INDIANAPOLIS, IN 46202
Marion County (317) 962-8881
BENJAMIN GRAY
Student in an Organized Health Care Education/Training Program
1633 N CAPITOL AVE, METHODIST MEDICAL TOWER, STE 640
INDIANAPOLIS, IN 46202
Marion County (317) 962-8881
DIANE BROADBENT FRIEDMAN NP
Nurse Practitioner
1633 N CAPITOL AVE, STE 322
INDIANAPOLIS, IN 46202
Marion County (317) 962-2929

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 Christopher Callahan's NPI number?

The NPI number for Christopher Callahan is 1104867043. It was assigned to this individual provider in the NPPES registry on June 10, 2006.

Where is Christopher Callahan located?

Christopher Callahan practices at 1633 N Capitol Ave Ste 322, Indianapolis, IN 46202. The listed phone number is (317) 962-2929.

What is Christopher Callahan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Christopher Callahan enrolled in Medicare?

Yes. Christopher Callahan is registered in the Medicare PECOS enrollment system.

What insurance does Christopher Callahan accept?

Health plans from CareSource list Christopher Callahan 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 Christopher Callahan was last updated on September 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.