Doctor profile · Federal record
Dr. Mary Callahan, D.O.
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Sandwich, MA
- NPI 1518968882
- Accepts Medicare
- MIPS 90.8 / 100 · 2023
- 34 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
68A Route 6A, Post Office Box 1757
Sandwich, MA 025631757
(774) 413-5457
fax (773) 413-5985
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- March 4, 2026
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- Massachusetts #160179
- Medicaid
- MA #3200680
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518968882. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,502
Distinct HCPCS
9
Medicare allowed
$164,231
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 588 | 220 | $132 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 453 | 226 | $15 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 136 | 134 | $207 | |
A9500 |
Technetium tc-99m sestamibi, diagnostic, per study dose | 96 | 48 | $121 | |
J2785 |
Injection, regadenoson, 0.1 mg | 68 | 17 | $56 | |
93015 |
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | 59 | 54 | $74 | |
78452 |
Nuclear medicine studies of heart muscle at rest and with stress and spect | 48 | 48 | $466 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 34 | 34 | $172 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 20 | 14 | $185 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 166. This provider delivers 9.0× the peer median.Open Payments
Industry payments received
All-time total
$563
Transactions
28
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 13 | $236.07 | |
| SCPHARMACEUTICALS INC. | 4 | $81.75 | |
| Amgen Inc. | 2 | $50.62 | |
| E.R. Squibb & Sons, L.L.C. | 2 | $47.04 | |
| Esperion Therapeutics, Inc. | 2 | $41.85 | |
| Actelion Pharmaceuticals US, Inc. | 1 | $40.44 | |
| Baxter Healthcare | 2 | $32.88 | |
| PFIZER INC. | 2 | $32.42 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,441
Patients
452
Total drug cost
$208,834
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Succinate | Generic | 329 | 98 | $9,326 |
| Valsartan | Generic | 153 | 46 | $8,385 |
| Atorvastatin Calcium | Generic | 120 | 39 | $4,010 |
| Amlodipine Besylate | Generic | 113 | 42 | $779 |
| Rosuvastatin Calcium | Generic | 107 | 38 | $8,455 |
| Lisinopril | Generic | 103 | 31 | $1,221 |
| Pravastatin Sodium | Generic | 99 | 32 | $3,364 |
| Eliquis (Apixaban) | Brand | 67 | 18 | $88,459 |
| Losartan Potassium | Generic | 63 | 20 | $862 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 54 | 15 | $1,453 |
Frequently asked questions
What is Dr. Mary Callahan's medical specialty?
Dr. Mary Callahan practices Cardiovascular Disease Physician in Sandwich, MA.
Where does Dr. Mary Callahan practice?
Dr. Mary Callahan practices at 68A Route 6A, Sandwich, MA 025631757. Office phone: 7744135457.
What is Dr. Mary Callahan's NPI?
Dr. Mary Callahan's National Provider Identifier (NPI) is 1518968882, issued by NPPES.
Does Dr. Mary Callahan accept Medicare assignment?
Yes. Dr. Mary Callahan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Callahan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306). Source: CMS Medicare Physician & Other Practitioners file.