Doctor profile · Federal record
Dr. William Gionfriddo, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Boston, MA
- NPI 1497167936
- Accepts Medicare
- 12 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
800 Washington St
Boston, MA 021111552
(617) 636-5000
Credentials & registration
- NPI registered
- June 2014 — 12 yrs on file
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #260716
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1497167936. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
659
Distinct HCPCS
10
Medicare allowed
$37,440
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 297 | 226 | $8 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 51 | 39 | $15 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 46 | 36 | $188 | |
93296 |
Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 44 | 26 | $25 | |
G2066 |
Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec | 38 | 12 | $76 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 29 | 19 | $123 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 28 | 28 | $180 | |
93294 |
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 25 | 14 | $31 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 20 | 20 | $231 | |
93295 |
Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 19 | 12 | $38 |
In context: peer comparison
Among 547 peers in this city , average services per provider: 81. This provider delivers 8.1× the peer median.Open Payments
Industry payments received
All-time total
$4,007
Transactions
39
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, Inc. | 15 | $1,986.09 | |
| Stereotaxis Inc | 11 | $1,427.98 | |
| Abbott Laboratories | 11 | $541.94 | |
| PFIZER INC. | 2 | $51.19 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
138
Patients
19
Total drug cost
$24,939
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Succinate | Generic | 52 | 19 | $1,146 |
| Eliquis (Apixaban) | Brand | 32 | 0 | $19,813 |
| Amiodarone Hcl | Generic | 23 | 0 | $142 |
| Dofetilide | Generic | 16 | 0 | $3,771 |
| Metoprolol Tartrate | Generic | 15 | 0 | $67 |
Hospital affiliations
Frequently asked questions
What is Dr. William Gionfriddo's medical specialty?
Dr. William Gionfriddo practices Internal Medicine Physician in Boston, MA.
Where does Dr. William Gionfriddo practice?
Dr. William Gionfriddo practices at 800 Washington St, Boston, MA 021111552. Office phone: 6176365000.
What is Dr. William Gionfriddo's NPI?
Dr. William Gionfriddo's National Provider Identifier (NPI) is 1497167936, issued by NPPES.
Does Dr. William Gionfriddo accept Medicare assignment?
Yes. Dr. William Gionfriddo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Gionfriddo 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.