Doctor profile · Federal record
Dr. John Mahoney, MD
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · South Weymouth, MA
- NPI 1821076845
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
55 Fogg RD
South Weymouth, MA 021902432
(781) 337-7011 - Mailing address
-
Po Box 200694
Pittsburgh, PA 152510694
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- February 13, 2026
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- Massachusetts #58715
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821076845. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,313
Distinct HCPCS
10
Medicare allowed
$142,424
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
71046 |
X-ray of chest, 2 views | 389 | 384 | $11 | |
71045 |
X-ray of chest, 1 view | 374 | 345 | $9 | |
72125 |
Ct scan of upper spine without contrast | 369 | 362 | $50 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 201 | 200 | $92 | |
93971 |
Ultrasound study of one arm or leg veins with compression and maneuvers | 189 | 187 | $22 | |
70450 |
Ct scan head or brain without contrast | 186 | 185 | $42 | |
78452 |
Nuclear medicine studies of heart muscle at rest and with stress and spect | 147 | 147 | $81 | |
93880 |
Ultrasound of both sides of head and neck blood flow | 136 | 136 | $40 | |
71275 |
Ct scan of blood vessels of chest with contrast | 111 | 109 | $91 | |
76705 |
Limited ultrasound scan of abdomen | 106 | 106 | $29 |
In context: peer comparison
Among 19 peers in this city , average services per provider: 156. This provider delivers 21× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. John Mahoney's medical specialty?
Dr. John Mahoney practices Diagnostic Radiology Physician in South Weymouth, MA.
Where does Dr. John Mahoney practice?
Dr. John Mahoney practices at 55 Fogg RD, South Weymouth, MA 021902432. Office phone: 7813377011.
What is Dr. John Mahoney's NPI?
Dr. John Mahoney's National Provider Identifier (NPI) is 1821076845, issued by NPPES.
Does Dr. John Mahoney accept Medicare assignment?
Yes. Dr. John Mahoney accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Mahoney commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 2 views (HCPCS 71046); X-ray of chest, 1 view (HCPCS 71045); Ct scan of upper spine without contrast (HCPCS 72125). Source: CMS Medicare Physician & Other Practitioners file.