Dr. David R. Gruen, MD
- Medicare services, 2024
- 2,308
- Medicare patients, 2024
- 1,460
- Hospital affiliations
- 2
- Industry payments
- $166,103
- Medical groups
- 7
- Practice address
- 2800 Main St, Bridgeport, CT 06606
- Practice phone
- Call (203) 576-5551
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gruen's professional email, personal email and mobile number
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Dr. David R. Gruen is a diagnostic radiologist in Bridgeport, Connecticut
Dr. Gruen practices at St. Vincent's Medical Center in Bridgeport, Connecticut, part of Hartford HealthCare.
Dr. Gruen's NPI, 1215901327, was assigned on February 15, 2006. Dr. Gruen holds Connecticut license 036693.
- NPI
- 1215901327NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052453917
- NPI enumeration date
- February 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 576-5551
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David R. Gruen practices at St. Vincent's Medical Center in Bridgeport, Connecticut
Dr. Gruen's primary practice is St. Vincent's Medical Center, at 2800 Main St, Bridgeport, CT 06606 in Fairfield County. The practice phone is (203) 576-5551.
- St. Vincent's Medical Center2800 Main St, Bridgeport, CT 06606 · Fairfield CountyPhone(203) 576-5551
Source: Dmand AI Affiliation Data
Dr. David R. Gruen is affiliated with 4 sites of care and 7 medical groups
Dr. Gruen's primary practice is St. Vincent's Medical Center in Bridgeport, Connecticut, part of Hartford HealthCare. Dr. Gruen is also affiliated with Bridgeport Hospital. The medical group on file is Advanced Radiology Consultants. Dmand AI also links Dr. Gruen to 6 more medical groups and 2 group practices and clinics, 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. David R. Gruen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gruen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Vincent's Medical Center | Available with a free account |
| +3 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David R. Gruen is one of 472 diagnostic radiologists in Connecticut
Diagnostic radiology is Dr. Gruen's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Gruen is licensed in Connecticut.
Specialties and state licenses
- Diagnostic radiology, ConnecticutPrimary
Diagnostic radiologists near Dr. Gruen
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. David R. Gruen billed Medicare for 2,308 services in 2024
CMS data shows 2,308 Medicare services from Dr. Gruen across 15 procedure codes in 2024, for 1,460 Medicare patients. Medicare paid $100,749 for them.
Dr. Gruen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,3282024: 2,23768%
- Other services
- 2023: 8542024: 7192%
- Tests and treatments
- 2023: 462024: 0100%
Where Dr. Gruen's Medicare services took place, 2024
- In an office67029%
- In a facility1,63871%
Dr. Gruen compared with the Connecticut median for diagnostic radiologists, 2024
- Dr. Gruen
- Connecticut median
- Medicare services
- 2,308vs 2,06312% above
- Medicare patients
- 1,460vs 1,26216% above
Medians across 462 diagnostic radiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Gruen'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. Gruen and other diagnostic radiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David R. Gruen treated 1,460 Medicare patients in 2024, average age 73
CMS counts 1,460 Medicare patients who saw Dr. Gruen in 2024. The largest group is 65 to 74, with 612 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 24% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gruen's median patient age at 66, with 80% women.
Dr. Gruen's Medicare patients by age, 2024
Dr. Gruen's Medicare patients by sex, 2024
- Women1,20182%
- Men25918%
Chronic conditions among Dr. Gruen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis48%
- Anxiety30%
- Diabetes26%
- Mood disorders25%
- Ischemic heart disease24%
- Osteoporosis24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gruen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women80%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. David R. Gruen takes part in Medicare
Dr. Gruen 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. David R. Gruen received $166,103 in industry payments from 2016 to 2025
CMS Open Payments shows 57 general payments to Dr. Gruen from 10 drug and device companies from 2016 to 2025. Device or supply loans make up the largest share, 38% of the total. Hologic Inc paid the most, $159,307. It also lists 14 research payments totaling $25,352 from 2017 to 2018.
General payments to Dr. Gruen by program year, 2016 to 2025
General payments to Dr. Gruen by kind, 2016 to 2025
- Device or supply loans$63,16038%
- Grants$54,36133%
- Consulting fees$34,04920%
- Travel and lodging$10,8047%
- Other$3,7282%
Companies that paid Dr. Gruen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David R. Gruen'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) |
| 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. David R. Gruen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David R. Gruen's NPI number?
Dr. David R. Gruen's NPI number is 1215901327. It was assigned on February 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David R. Gruen?
Dr. David R. Gruen is a diagnostic radiologist in Bridgeport, Connecticut. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. David R. Gruen practice?
Dr. Gruen practices at 2800 Main St, Bridgeport, CT 06606. Dr. Gruen's primary practice is St. Vincent's Medical Center in Bridgeport, Connecticut, part of Hartford HealthCare. Dmand AI also links Dr. Gruen to 6 medical groups and 2 group practices and clinics.
What is Dr. David R. Gruen's office phone number?
The practice phone on file for Dr. Gruen is (203) 576-5551.
What is Dr. David R. Gruen's medical license number?
Dr. Gruen holds Connecticut license 036693.
Which hospitals is Dr. David R. Gruen affiliated with?
Dr. Gruen practices at St. Vincent's Medical Center in Bridgeport, Connecticut. Dr. Gruen is also affiliated with Bridgeport Hospital.
What medical group is Dr. David R. Gruen part of?
Dr. Gruen is linked to Advanced Radiology Consultants. Dmand AI links Dr. Gruen to 6 more medical groups.
Does Dr. David R. Gruen accept Medicare?
Yes. CMS data shows Dr. Gruen billed Medicare for 2,308 services in 2024, and Dr. Gruen accepts Medicare assignment.
How many Medicare patients does Dr. David R. Gruen see?
CMS counts 1,460 Medicare patients who saw Dr. Gruen in 2024, with an average age of 73.
What services does Dr. David R. Gruen bill to Medicare?
In 2024, Dr. Gruen's most billed Medicare services were radiation oncology (77067), radiation oncology (77063) and diagnostic imaging (71046).
Has Dr. David R. Gruen received payments from drug or device companies?
CMS Open Payments shows $166,103 in general payments to Dr. Gruen from 10 companies from 2016 to 2025. The largest total came from Hologic Inc.
How long has Dr. David R. Gruen been practicing?
Dr. Gruen graduated from medical school in 2012, 14 years ago.
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