Dr. John Guy Santilli, MD
- Medicare services, 2024
- 337
- Medicare patients, 2024
- 247
- Hospital affiliations
- 2
- Industry payments
- $774
- Medical groups
- 7
- Practice address
- 28 Crescent St, Middletown, CT 06457
- Practice phone
- Call (860) 344-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. John Guy Santilli is an interventional radiologist in Middletown, Connecticut
Dr. Santilli practices at Middlesex Hospital in Middletown, Connecticut, part of Middlesex Health System.
Dr. Santilli's NPI, 1063567899, was assigned on January 24, 2007. Dr. Santilli graduated from Wayne State University School of Medicine in 1994. Dr. Santilli holds Massachusetts license BS7279537.
- NPI
- 1063567899NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729970983
- NPI enumeration date
- January 24, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 344-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Guy Santilli practices at Middlesex Hospital in Middletown, Connecticut
Dr. Santilli's primary practice is Middlesex Hospital, at 28 Crescent St, Middletown, CT 06457 in Middlesex County. The practice phone is (860) 344-6000.
- Middlesex Hospital28 Crescent St, Middletown, CT 06457 · Middlesex CountyPhone(860) 344-6000
Source: Dmand AI Affiliation Data
Dr. John Guy Santilli is affiliated with 2 sites of care and 7 medical groups
Dr. Santilli's primary practice is Middlesex Hospital in Middletown, Connecticut, part of Middlesex Health System. Dr. Santilli is also affiliated with Boston Children's Hospital. The medical group on file is Radiologic Associates of Middletown. Dmand AI also links Dr. Santilli to 6 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Guy Santilli's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Santilli practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Middlesex Hospital | Available with a free account |
| +1 more site and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Middlesex Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Guy Santilli is one of 41 interventional radiologists in Connecticut
Vascular and interventional radiology is Dr. Santilli's primary specialty in the NPI Registry, under taxonomy code 2085R0204X. Dr. Santilli is licensed in Massachusetts.
Specialties and state licenses
- Vascular and interventional radiology, MassachusettsPrimary
Interventional radiologists near Dr. Santilli
Counts of interventional 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. John Guy Santilli billed Medicare for 337 services in 2024
CMS data shows 337 Medicare services from Dr. Santilli across 9 procedure codes in 2024, for 247 Medicare patients. Medicare paid $13,414 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Santilli's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1912024: 15817%
- Surgery
- 2023: 2612024: 10062%
- Imaging
- 2023: 1832024: 7957%
Dr. Santilli compared with the Connecticut median for interventional radiologists, 2024
- Dr. Santilli
- Connecticut median
- Medicare services
- 337vs 1,58579% below
- Medicare patients
- 247vs 89872% below
Medians across 38 interventional radiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Santilli'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.
Need commercial claims for Dr. Santilli?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Santilli and other interventional radiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Guy Santilli treated 247 Medicare patients in 2024, average age 75
CMS counts 247 Medicare patients who saw Dr. Santilli in 2024. The largest group is 75 to 84, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.18, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Santilli's median patient age at 70, with 54% women.
Dr. Santilli's Medicare patients by age, 2024
Dr. Santilli's Medicare patients by sex, 2024
- Women13856%
- Men10944%
Chronic conditions among Dr. Santilli's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Mood disorders41%
- Anxiety39%
- Ischemic heart disease38%
- Chronic kidney disease37%
- Depression36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Santilli's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. John Guy Santilli takes part in Medicare
Dr. Santilli accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Guy Santilli received $774 in industry payments from 2017 to 2025
CMS Open Payments shows 19 general payments to Dr. Santilli from 7 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $527.
General payments to Dr. Santilli by program year, 2017 to 2025
Companies that paid Dr. Santilli the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Guy Santilli graduated from Wayne State University School of Medicine
Dr. Santilli graduated from Wayne State University School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Guy Santilli'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) |
| Industry payments | Open Payments (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. John Guy Santilli
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What is Dr. John Guy Santilli's NPI number?
Dr. John Guy Santilli's NPI number is 1063567899. It was assigned on January 24, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John Guy Santilli?
Dr. John Guy Santilli is an interventional radiologist in Middletown, Connecticut. The primary specialty in the NPI Registry is Vascular & Interventional Radiology Physician (taxonomy code 2085R0204X).
Where does Dr. John Guy Santilli practice?
Dr. Santilli practices at 28 Crescent St, Middletown, CT 06457. Dr. Santilli's primary practice is Middlesex Hospital in Middletown, Connecticut, part of Middlesex Health System. Dmand AI also links Dr. Santilli to 6 medical groups.
What is Dr. John Guy Santilli's office phone number?
The practice phone on file for Dr. Santilli is (860) 344-6000.
What is Dr. John Guy Santilli's medical license number?
Dr. Santilli holds Massachusetts license BS7279537.
Which hospitals is Dr. John Guy Santilli affiliated with?
Dr. Santilli practices at Middlesex Hospital in Middletown, Connecticut. Dr. Santilli is also affiliated with Boston Children's Hospital.
What medical group is Dr. John Guy Santilli part of?
Dr. Santilli is linked to Radiologic Associates of Middletown. Dmand AI links Dr. Santilli to 6 more medical groups.
Does Dr. John Guy Santilli accept Medicare?
Yes. CMS data shows Dr. Santilli billed Medicare for 337 services in 2024, and Dr. Santilli accepts Medicare assignment.
How many Medicare patients does Dr. John Guy Santilli see?
CMS counts 247 Medicare patients who saw Dr. Santilli in 2024, with an average age of 75.
What services does Dr. John Guy Santilli bill to Medicare?
In 2024, Dr. Santilli's most billed Medicare services were special service (99152), radiation oncology (77012) and surgery: skin and soft tissue (10005).
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Where did Dr. John Guy Santilli go to medical school?
Dr. Santilli graduated from Wayne State University School of Medicine in 1994.
Has Dr. John Guy Santilli received payments from drug or device companies?
CMS Open Payments shows $774 in general payments to Dr. Santilli from 7 companies from 2017 to 2025. The largest total came from Inari Medical, Inc.
How long has Dr. John Guy Santilli been practicing?
Dr. Santilli graduated from medical school in 1994, 32 years ago.
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