John Thomas Callaghan, MD, PHD
Internal Medicine Physician · Indianapolis, IN
John Thomas Callaghan, MD, PHD is an internal medicine physician with a practice address in Indianapolis, Indiana, and NPI 1700825064, issued on Jun 5, 2006. Check the license (Indiana 01028895A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- John Thomas Callaghan
- Credential
- MD, PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 01028895A IN
01028895 IN
Self-reported in NPPES; status is on the state search - Practice location
- 1481 W 10TH St, Indianapolis, IN 46202
- Phone
- (317) 988-2624
- Enumerated
- Jun 5, 2006
- Record last updated
- Mar 4, 2025
- Medicaid ID
- 200813030 IN
- Medicare enrollment
- Enrolled (PECOS I20061218000286); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 1969
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 1481 W 10TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nicole Ader, CCC-SLPSpeech-Language Pathologist1942984703
- Obo Akinbola, RPHPharmacist1124136213
- Branko Alavanja, D.D.S.Dentist1649568437
- Estelle Albright, D.P.M.Podiatrist1114011814
Verify John Thomas Callaghan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01028895ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- IU Health Medical Group LLCIndianapolis, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Thomas Callaghan among 2,109 internal medicine physician records in Indiana
John Thomas Callaghan, MD, PHD is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1969 · median 2005 among the 1,448 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
699 internal medicine physician records list a practice address in Indianapolis
They are 699 of the 30,493 NPPES records with a practice address in Indianapolis, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Indianapolis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Todd Biggerstaff, MDIndianapolis, IN 462021891796157
- Wayne Ellis, MDIndianapolis, IN 462021508848102
- Mason Goodman, MDIndianapolis, IN 462021508848433
- Areeba Kara, M.D.Indianapolis, IN 462021528069978
- Irina Khan, M.D.Indianapolis, IN 462021508852294
- Audrey Maminta, MDIndianapolis, IN 462021518941863
- Patrick McQuillan, M.D.Indianapolis, IN 462021669473989
- Jeffrey Mossler, MDIndianapolis, IN 462021356312896
Common questions
What is John Thomas Callaghan, MD, PHD's NPI number?
John Thomas Callaghan, MD, PHD's National Provider Identifier (NPI) is 1700825064, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Thomas Callaghan, MD, PHD located?
The NPPES record lists a practice address at 1481 W 10TH St, Indianapolis, IN, 46202. Phone: (317) 988-2624. Providers update this record themselves, so call before visiting.
How can I verify John Thomas Callaghan, MD, PHD's license?
NPPES lists Indiana license number 01028895A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.