Doctor profile · Federal record
Dr. Daniel Diffin, MD
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Westerly, RI
- NPI 1649240821
- Accepts Medicare
- MIPS 85.0 / 100 · 2023
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
25 Wells Street, The Westerly Hospital
Westerly, RI 02891
(860) 415-9248
fax (860) 415-9237 - Mailing address
-
Po Box 609
Ledyard, CT 063390609
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- November 29, 2017
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- Rhode Island #MD10260
- Medicaid
- RI #7008117
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649240821. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,690
Distinct HCPCS
6
Medicare allowed
$57,162
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77067 |
Screening mammography | 473 | 473 | $38 | |
77063 |
Screening 3d breast mammography | 472 | 472 | $30 | |
77063 |
Screening 3d breast mammography | 352 | 352 | $30 | |
77067 |
Screening mammography | 352 | 352 | $37 | |
76641 |
Complete ultrasound scan of 1 breast | 30 | 30 | $54 | |
71046 |
X-ray of chest, 2 views | 11 | 11 | $11 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 80. This provider delivers 21× the peer median.Frequently asked questions
What is Dr. Daniel Diffin's medical specialty?
Dr. Daniel Diffin practices Diagnostic Radiology Physician in Westerly, RI.
Where does Dr. Daniel Diffin practice?
Dr. Daniel Diffin practices at 25 Wells Street, Westerly, RI 02891. Office phone: 8604159248.
What is Dr. Daniel Diffin's NPI?
Dr. Daniel Diffin's National Provider Identifier (NPI) is 1649240821, issued by NPPES.
Does Dr. Daniel Diffin accept Medicare assignment?
Yes. Dr. Daniel Diffin accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Daniel Diffin commonly perform?
Top Medicare-reported procedures in 2023: Screening mammography (HCPCS 77067); Screening 3d breast mammography (HCPCS 77063); Screening 3d breast mammography (HCPCS 77063). Source: CMS Medicare Physician & Other Practitioners file.