Doctor profile · Federal record
Dr. Michael Callahan, MD
Gynecologic Oncology Physician (CMS: Gynecological Oncology) · Indianapolis, IN
- NPI 1548396492
- Accepts Medicare
- 27 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
8402 Harcourt RD Ste 420
Indianapolis, IN 46260
(317) 415-6740 - Additional location
-
8301 Harcourt RD
Indianapolis, IN 462602081
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- June 6, 2022
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207VX0201X — NUCC code
- State license (1)
- Indiana #01053762A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548396492. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
150
Distinct HCPCS
5
Medicare allowed
$18,838
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 63 | 43 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 37 | 27 | $119 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 25 | 25 | $204 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 13 | 12 | $167 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 12 | 12 | $155 |
In context: peer comparison
Among 8 peers in Indianapolis Gynecologic Oncology Physician, average services per provider: 31. This provider delivers 4.8× the peer median.Open Payments
Industry payments received
All-time total
$64
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Daiichi Sankyo INC. | 1 | $23.72 | |
| Eisai INC. | 1 | $22.08 | |
| Merck Sharp & Dohme LLC | 1 | $18.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
127
Patients
28
Total drug cost
$3,294
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Letrozole | Generic | 24 | 0 | $1,371 |
| Lactated Ringers (Ringer's Solution,Lactated) | Brand | 19 | 0 | $263 |
| Ondansetron Odt (Ondansetron) | Brand | 16 | 14 | $389 |
| Prochlorperazine Maleate | Generic | 16 | 14 | $184 |
| Anastrozole | Generic | 15 | 0 | $246 |
| Betamethasone Diprop Augmented (Betamethasone/Propylene Glyc) | Brand | 14 | 0 | $84 |
| Megestrol Acetate | Generic | 12 | 0 | $271 |
| Gabapentin | Generic | 11 | 0 | $485 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Callahan's medical specialty?
Dr. Michael Callahan practices Gynecologic Oncology Physician in Indianapolis, IN.
Where does Dr. Michael Callahan practice?
Dr. Michael Callahan practices at 8402 Harcourt RD Ste 420, Indianapolis, IN 46260. Office phone: 3174156740.
What is Dr. Michael Callahan's NPI?
Dr. Michael Callahan's National Provider Identifier (NPI) is 1548396492, issued by NPPES.
Does Dr. Michael Callahan accept Medicare assignment?
Yes. Dr. Michael Callahan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Callahan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.