Doctor profile · Federal record
Dr. Ann Callahan, MD
Surgery Physician · Surgery Physician · Student in an Organized Health Care Education/Training Program · Torrance, CA
- NPI 1093962847
- MIPS 83.5 / 100 · 2023
- 18 yrs on file
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
23451 Madison St Ste 340
Torrance, CA 905054762
(310) 373-6864 - Additional location
-
2545 Chicago Ave, Suite 601
Minneapolis, MN 554044522
(612) 863-7770
fax (612) 863-7772 - Mailing address
-
2545 Chicago Ave, Suite 601
Minneapolis, MN 554044522
Credentials & registration
- NPI registered
- August 2008 — 18 yrs on file
- Profile last updated
- January 16, 2025
- Specialty taxonomy
- 208600000X — NUCC code
- State licenses (2)
- California #A112637 · Minnesota #60692
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1093962847. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
53
Distinct HCPCS
2
Medicare allowed
$5,592
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 36 | 35 | $95 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 17 | 17 | $129 |
In context: peer comparison
Among 8 peers in this city , average services per provider: 160. This provider delivers 0.3× the peer median.Open Payments
Industry payments received
All-time total
$639
Transactions
3
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| INTUITIVE SURGICAL, INC. | 3 | $639.16 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
30
Patients
14
Total drug cost
$450
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Letrozole | Generic | 16 | 0 | $361 |
| Tramadol Hcl | Generic | 14 | 14 | $89 |
Frequently asked questions
What is Dr. Ann Callahan's medical specialty?
Dr. Ann Callahan practices Surgery Physician in Torrance, CA.
Where does Dr. Ann Callahan practice?
Dr. Ann Callahan practices at 23451 Madison St Ste 340, Torrance, CA 905054762. Office phone: 3103736864.
What is Dr. Ann Callahan's NPI?
Dr. Ann Callahan's National Provider Identifier (NPI) is 1093962847, issued by NPPES.
What procedures does Dr. Ann Callahan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.