Doctor profile · Federal record
Dr. Theresa Callahan, M.D.
Pediatrics Physician (CMS: Pediatric Medicine) · Leominster, MA
- NPI 1861480931
- Accepts Medicare
- 35 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 Hospital RD, Suite 4
Leominster, MA 014532253
(978) 514-6300
fax (978) 514-6324
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- June 24, 2011
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 208000000X — NUCC code
- State license (1)
- Massachusetts #80890
- Medicaid
- MA #3141454
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861480931. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$91
Transactions
4
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| PFIZER INC. | 1 | $32.69 | |
| BioMarin Pharmaceutical Inc. | 1 | $24.68 | |
| Hologic Sales and Service, LLC | 1 | $19.26 | |
| SANOFI PASTEUR INC. | 1 | $14.68 |
By nature of payment
Frequently asked questions
What is Dr. Theresa Callahan's medical specialty?
Dr. Theresa Callahan practices Pediatrics Physician in Leominster, MA.
Where does Dr. Theresa Callahan practice?
Dr. Theresa Callahan practices at 100 Hospital RD, Leominster, MA 014532253. Office phone: 9785146300.
What is Dr. Theresa Callahan's NPI?
Dr. Theresa Callahan's National Provider Identifier (NPI) is 1861480931, issued by NPPES.
Does Dr. Theresa Callahan accept Medicare assignment?
Yes. Dr. Theresa Callahan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.