Dr. Daniel Charles Diffin, MD
- Medicare services, 2024
- 1,517
- Medicare patients, 2024
- 770
- MIPS score, 2024
- 58
- Hospital affiliations
- 2
- Medical groups
- 2
- Practice address
- 365 Montauk Ave, New London, CT 06320
- Practice phone
- Call (860) 442-0711
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Daniel Charles Diffin is a diagnostic radiologist in New London, Connecticut
Dr. Diffin practices at Lawrence + Memorial Hospital in New London, Connecticut, part of Yale New Haven Health System.
Dr. Diffin's NPI, 1649240821, was assigned on January 23, 2006. Dr. Diffin graduated from New York University School of Medicine in 1989. Dr. Diffin holds Rhode Island license MD10260.
- NPI
- 1649240821NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355425497
- NPI enumeration date
- January 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 442-0711
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Charles Diffin practices at Lawrence + Memorial Hospital in New London, Connecticut
Dr. Diffin's primary practice is Lawrence + Memorial Hospital, at 365 Montauk Ave, New London, CT 06320 in New London County. The practice phone is (860) 442-0711.
- Lawrence + Memorial Hospital365 Montauk Ave, New London, CT 06320 · New London CountyPhone(860) 442-0711
Source: Dmand AI Affiliation Data
Dr. Daniel Charles Diffin is affiliated with 2 sites of care and 2 medical groups
Dr. Diffin's primary practice is Lawrence + Memorial Hospital in New London, Connecticut, part of Yale New Haven Health System. Dr. Diffin is also affiliated with Yale New Haven Health Westerly Hospital. The medical group on file is Ocean Radiology Associates. Dmand AI also links Dr. Diffin to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel Charles Diffin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diffin practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lawrence + Memorial Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel Charles Diffin is one of 472 diagnostic radiologists in Connecticut
Diagnostic radiology is Dr. Diffin's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Diffin is licensed in Rhode Island.
Specialties and state licenses
- Diagnostic radiology, Rhode IslandPrimary
Diagnostic radiologists near Dr. Diffin
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Daniel Charles Diffin billed Medicare for 1,517 services in 2024
CMS data shows 1,517 Medicare services from Dr. Diffin across 3 procedure codes in 2024, for 770 Medicare patients. Medicare paid $49,075 for them.
Dr. Diffin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,6902024: 1,51710%
Where Dr. Diffin's Medicare services took place, 2024
- In an office83855%
- In a facility67945%
Dr. Diffin compared with the Connecticut median for diagnostic radiologists, 2024
- Dr. Diffin
- Connecticut median
- Medicare services
- 1,517vs 2,06326% below
- Medicare patients
- 770vs 1,26239% below
Medians across 462 diagnostic radiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Diffin's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diffin and other diagnostic radiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Charles Diffin treated 770 Medicare patients in 2024, average age 73
CMS counts 770 Medicare patients who saw Dr. Diffin in 2024. The largest group is 65 to 74, with 390 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 13% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Diffin's median patient age at 68, with 99% women.
Dr. Diffin's Medicare patients by age, 2024
Chronic conditions among Dr. Diffin's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis46%
- Anxiety30%
- Osteoporosis26%
- Mood disorders25%
- Depression23%
- Diabetes20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diffin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Charles Diffin scored 58 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 58 out of 100 for Dr. Diffin for performance year 2024, reported as part of a group. Dr. Diffin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Diffin's MIPS scores, performance year 2024
- 58of 100Final score
- 49.1of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Daniel Charles Diffin graduated from New York University School of Medicine
Dr. Diffin graduated from New York University School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Charles Diffin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Daniel Charles Diffin
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What is Dr. Daniel Charles Diffin's NPI number?
Dr. Daniel Charles Diffin's NPI number is 1649240821. It was assigned on January 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Charles Diffin?
Dr. Daniel Charles Diffin is a diagnostic radiologist in New London, Connecticut. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Daniel Charles Diffin practice?
Dr. Diffin practices at 365 Montauk Ave, New London, CT 06320. Dr. Diffin's primary practice is Lawrence + Memorial Hospital in New London, Connecticut, part of Yale New Haven Health System. Dmand AI also links Dr. Diffin to 1 medical group.
What is Dr. Daniel Charles Diffin's office phone number?
The practice phone on file for Dr. Diffin is (860) 442-0711.
What is Dr. Daniel Charles Diffin's medical license number?
Dr. Diffin holds Rhode Island license MD10260.
Which hospitals is Dr. Daniel Charles Diffin affiliated with?
Dr. Diffin practices at Lawrence + Memorial Hospital in New London, Connecticut. Dr. Diffin is also affiliated with Yale New Haven Health Westerly Hospital.
What medical group is Dr. Daniel Charles Diffin part of?
Dr. Diffin is linked to Ocean Radiology Associates. Dmand AI links Dr. Diffin to 1 more medical group.
Does Dr. Daniel Charles Diffin accept Medicare?
Yes. CMS data shows Dr. Diffin billed Medicare for 1,517 services in 2024, and Dr. Diffin accepts Medicare assignment.
What is Dr. Daniel Charles Diffin's MIPS score?
Dr. Diffin's MIPS final score for performance year 2024 is 58 out of 100, reported as part of a group.
How many Medicare patients does Dr. Daniel Charles Diffin see?
CMS counts 770 Medicare patients who saw Dr. Diffin in 2024, with an average age of 73.
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What services does Dr. Daniel Charles Diffin bill to Medicare?
In 2024, Dr. Diffin's most billed Medicare services were radiation oncology (77067), radiation oncology (77063) and ultrasound (76641).
Where did Dr. Daniel Charles Diffin go to medical school?
Dr. Diffin graduated from New York University School of Medicine in 1989.
How long has Dr. Daniel Charles Diffin been practicing?
Dr. Diffin graduated from medical school in 1989, 37 years ago.
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