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Dr. John Vasilios Dennison, MD
NPI1619339058PAC ID0840586798
- Medicare services, 2024
- 142
- Medicare patients, 2024
- 162
- Publications
- 1
- MIPS score, 2024
- 95
- Hospital affiliations
- 2
- Practice address
- 550 Peachtree Street, NE, Atlanta, GA 30308
- Practice phone
- Call (404) 686-2450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dennison's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Vasilios Dennison is a neuroradiologist in Atlanta, Georgia
Dr. Dennison practices at Emory University Hospital Midtown in Atlanta, Georgia, part of Emory University.
Dr. Dennison's NPI, 1619339058, was assigned on March 24, 2016. Dr. Dennison holds Georgia license 92623.
NPI and contact details
- NPI
- 1619339058NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840586798
- NPI enumeration date
- March 24, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 686-2450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Vasilios Dennison practices at Emory University Hospital Midtown in Atlanta, Georgia
Dr. Dennison's primary practice is Emory University Hospital Midtown, at 550 Peachtree Street, NE, Atlanta, GA 30308 in Fulton County. The practice phone is (404) 686-2450.
- Emory University Hospital Midtown550 Peachtree Street, NE, Atlanta, GA 30308 · Fulton CountyPhone(404) 686-2450
Source: Dmand AI Affiliation Data
Dr. John Vasilios Dennison is affiliated with 5 sites of care and 2 medical groups
Dr. Dennison's primary practice is Emory University Hospital Midtown in Atlanta, Georgia, part of Emory University. Dr. Dennison is also affiliated with Emory University Hospital. The medical group on file is Emory Clinic. Dmand AI also links Dr. Dennison to 2 more group practices and clinics, 1 clinical lab and 1 medical group, each named with a free account.
Emory University HospitalEmory Clinic2 group practices and clinicsNames with a free account1 clinical labName with a free account1 medical groupName with a free account
See all 7 affiliations for Dr. DennisonSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Vasilios Dennison's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dennison practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Emory University Hospital Midtown | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. John Vasilios Dennison is one of 33 neuroradiologists in Georgia
Neuroradiology is Dr. Dennison's primary specialty in the NPI Registry, under taxonomy code 2085N0700X. Dmand AI has Dr. Dennison's licenses on file in 2 states: Georgia and North Carolina.
Specialties and state licenses
- Neuroradiology, GeorgiaPrimary
- Diagnostic radiology, North Carolina
Neuroradiologists near Dr. Dennison
Counts of neuroradiologists with a Dmand AI profile, by place and practice. Each opens the list.
33neuroradiologists in Georgia20neuroradiologists in Atlanta3neuroradiologists at Emory University Hospital Midtown
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Vasilios Dennison billed Medicare for 142 services in 2024
CMS data shows 142 Medicare services from Dr. Dennison across 5 procedure codes in 2024, for 162 Medicare patients. Medicare paid $6,956 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024142
Medicare patients162
Paid by Medicare$6,956
Procedure codes5
Dr. Dennison's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 282024: 142407%
Dr. Dennison compared with the Georgia median for neuroradiologists, 2024
- Dr. Dennison
- Georgia median
- Medicare services
- 142vs 80882% below
- Medicare patients
- 162vs 70177% below
Medians across 36 neuroradiologists in Georgia with Dmand AI profiles that report each measure.
Dr. Dennison'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. Dennison?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dennison and other neuroradiologists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Vasilios Dennison treated 162 Medicare patients in 2024, average age 72
CMS counts 162 Medicare patients who saw Dr. Dennison in 2024. The largest group is 65 to 74, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.00, 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. Dennison's median patient age at 12, with 48% women.
Medicare patients, 2024162
Average age72
Average risk score2.00
Also on Medicaid20%
Dr. Dennison's Medicare patients by age, 2024
Dr. Dennison's Medicare patients by sex, 2024
- Women8754%
- Men7546%
Chronic conditions among Dr. Dennison's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Stroke or TIA51%
- Diabetes39%
- Depression35%
- Chronic kidney disease34%
- Mood disorders34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dennison's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 12
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Vasilios Dennison scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Dennison for performance year 2024, reported through an alternative payment model (APM). Dr. Dennison accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Dennison's MIPS scores, performance year 2024
- 95of 100Final score
- 80.6of 100Quality
- 100of 100Promoting Interoperability
- 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. John Vasilios Dennison has 1 publication on record
Dmand AI links 1 paper to Dr. Dennison in 2012.
Papers1
Recent publications by Dr. Dennison
See who Dr. Dennison researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Dennison works with, so you can find a warm path to the right neuroradiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Vasilios Dennison received $14 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Dennison from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $14.
Companies that paid Dr. Dennison the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Vasilios Dennison'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John Vasilios Dennison
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. John Vasilios Dennison's NPI number?
Dr. John Vasilios Dennison's NPI number is 1619339058. It was assigned on March 24, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. John Vasilios Dennison?
Dr. John Vasilios Dennison is a neuroradiologist in Atlanta, Georgia. The primary specialty in the NPI Registry is Neuroradiology Physician (taxonomy code 2085N0700X).
Where does Dr. John Vasilios Dennison practice?
Dr. Dennison practices at 550 Peachtree Street, NE, Atlanta, GA 30308. Dr. Dennison's primary practice is Emory University Hospital Midtown in Atlanta, Georgia, part of Emory University. Dmand AI also links Dr. Dennison to 2 group practices and clinics, 1 clinical lab and 1 medical group.
What is Dr. John Vasilios Dennison's office phone number?
The practice phone on file for Dr. Dennison is (404) 686-2450.
What is Dr. John Vasilios Dennison's medical license number?
Dr. Dennison holds Georgia license 92623, one of the licenses on file in 2 states.
Which states has Dr. John Vasilios Dennison been licensed in?
Dmand AI has state licenses on file for Dr. Dennison in Georgia and North Carolina.
Which hospitals is Dr. John Vasilios Dennison affiliated with?
Dr. Dennison practices at Emory University Hospital Midtown in Atlanta, Georgia. Dr. Dennison is also affiliated with Emory University Hospital.
What medical group is Dr. John Vasilios Dennison part of?
Dr. Dennison is linked to Emory Clinic. Dmand AI links Dr. Dennison to 1 more medical group.
Does Dr. John Vasilios Dennison accept Medicare?
Yes. CMS data shows Dr. Dennison billed Medicare for 142 services in 2024, and Dr. Dennison accepts Medicare assignment.
What is Dr. John Vasilios Dennison's MIPS score?
Dr. Dennison's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. John Vasilios Dennison see?
CMS counts 162 Medicare patients who saw Dr. Dennison in 2024, with an average age of 72.
What services does Dr. John Vasilios Dennison bill to Medicare?
In 2024, Dr. Dennison's most billed Medicare services were diagnostic imaging (70450), diagnostic imaging (70553) and diagnostic imaging (70498).
Has Dr. John Vasilios Dennison received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Dennison from 1 company from 2017 to 2017. The largest total came from Amgen Inc.
How long has Dr. John Vasilios Dennison been practicing?
Dr. Dennison graduated from medical school in 2016, 10 years ago.
Does Dr. John Vasilios Dennison do research?
Dmand AI links 1 publication to Dr. Dennison.
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