Doctor profile · Federal record
Dr. Tomas Neilan, MD
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Internal Medicine Physician · Boston, MA
- NPI 1437285145
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
Massachusetts General Hospital, 55 Fruit Street
Boston, MA 02114
(617) 724-2700 - Additional location
-
75 Francis St
Boston, MA 021156106
(617) 732-5500 - Mailing address
-
55 Fruit St
Boston, MA 021142621
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- January 3, 2026
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- Massachusetts #234637
- Medicaid
- MA #110088962A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437285145. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,715
Distinct HCPCS
10
Medicare allowed
$100,275
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 710 | 593 | $9 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 309 | 243 | $16 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 220 | 192 | $194 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 152 | 53 | $126 | |
93042 |
Electrocardiogram (ecg) 1 to 3 leads with review by physician only | 102 | 36 | $7 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 80 | 76 | $140 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 49 | 31 | $34 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 42 | 42 | $184 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 27 | 27 | $9 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 24 | 24 | $239 |
In context: peer comparison
Among 134 peers in Boston Cardiovascular Disease Physician, average services per provider: 118. This provider delivers 15× the peer median.Open Payments
Industry payments received
All-time total
$15,500
Transactions
9
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| E.R. Squibb & Sons, L.L.C. | 6 | $6,459.75 | |
| Amgen INC. | 1 | $4,582.50 | |
| Genentech, INC. | 1 | $2,857.50 | |
| AstraZeneca Uk Limited | 1 | $1,600.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,413
Patients
453
Total drug cost
$315,154
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 249 | 81 | $6,540 |
| Metoprolol Succinate | Generic | 203 | 69 | $6,192 |
| Rosuvastatin Calcium | Generic | 134 | 45 | $11,072 |
| Lisinopril | Generic | 114 | 34 | $1,727 |
| Carvedilol | Generic | 112 | 35 | $1,659 |
| Ezetimibe | Generic | 111 | 36 | $7,261 |
| Amlodipine Besylate | Generic | 100 | 37 | $1,260 |
| Eliquis (Apixaban) | Brand | 88 | 23 | $120,950 |
| Entresto (Sacubitril/Valsartan) | Brand | 59 | 15 | $67,063 |
| Furosemide | Generic | 55 | 25 | $377 |
Hospital affiliations
Frequently asked questions
What is Dr. Tomas Neilan's medical specialty?
Dr. Tomas Neilan practices Cardiovascular Disease Physician in Boston, MA.
Where does Dr. Tomas Neilan practice?
Dr. Tomas Neilan practices at Massachusetts General Hospital, Boston, MA 02114. Office phone: 6177242700.
What is Dr. Tomas Neilan's NPI?
Dr. Tomas Neilan's National Provider Identifier (NPI) is 1437285145, issued by NPPES.
Does Dr. Tomas Neilan accept Medicare assignment?
Yes. Dr. Tomas Neilan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tomas Neilan commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.