Dr. Theofanis Tsiamtsiouris, MD
- Medicare services, 2024
- 4,834
- Medicare patients, 2024
- 1,363
- Part D claims, 2024
- 9,553
- Hospital affiliations
- 4
- Industry payments
- $5,099
- Practice address
- 100 Port Washington Boulevard, Roslyn, NY 11576
- Practice phone
- Call (516) 562-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tsiamtsiouris' 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. Theofanis Tsiamtsiouris is an interventional cardiologist in Roslyn, New York
Dr. Tsiamtsiouris practices at St. Francis Hospital & Heart Center in Roslyn, New York, part of Diocese of Rockville Centre.
Dr. Tsiamtsiouris' NPI, 1306897541, was assigned on May 12, 2006. Dr. Tsiamtsiouris graduated from Stony Brook University Health Sciences Center School of Medicine in 1993. Dr. Tsiamtsiouris holds New York license 1984011.
- NPI
- 1306897541NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345210993
- NPI enumeration date
- May 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (516) 562-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Theofanis Tsiamtsiouris practices at St. Francis Hospital & Heart Center in Roslyn, New York
Dr. Tsiamtsiouris' primary practice is St. Francis Hospital & Heart Center, at 100 Port Washington Boulevard, Roslyn, NY 11576 in Nassau County. The practice phone is (516) 562-6000.
- St. Francis Hospital & Heart Center100 Port Washington Boulevard, Roslyn, NY 11576 · Nassau CountyPhone(516) 562-6000
Source: Dmand AI Affiliation Data
Dr. Theofanis Tsiamtsiouris is affiliated with 4 sites of care and 1 medical group
Dr. Tsiamtsiouris' primary practice is St. Francis Hospital & Heart Center in Roslyn, New York, part of Diocese of Rockville Centre. Dr. Tsiamtsiouris is also affiliated with Good Samaritan University Hospital. The medical group on file is Cardiac Interventional Group. Dmand AI also links Dr. Tsiamtsiouris to 2 more hospitals, 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. Theofanis Tsiamtsiouris' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsiamtsiouris practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Francis Hospital & Heart Center | Available with a free account |
| +3 more affiliated sites | 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 Diocese of Rockville Centre and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Theofanis Tsiamtsiouris is one of 363 interventional cardiologists in New York
Interventional cardiology is Dr. Tsiamtsiouris' primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Tsiamtsiouris is licensed in New York.
Specialties and state licenses
- Interventional cardiology, New YorkPrimary
Clinical focus
Dmand AI lists angioplasty, cardiac catheterization and endocarditis among the conditions Dr. Tsiamtsiouris treats.
Interventional cardiologists near Dr. Tsiamtsiouris
Counts of interventional cardiologists 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. Theofanis Tsiamtsiouris billed Medicare for 4,834 services in 2024
CMS data shows 4,834 Medicare services from Dr. Tsiamtsiouris across 19 procedure codes in 2024, for 1,363 Medicare patients. Medicare paid $339,280 for them.
Dr. Tsiamtsiouris' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,8312024: 2,7144%
- Tests and treatments
- 2023: 2,0582024: 2,0791%
- Surgery
- 2023: 02024: 22
- Other services
- 2023: 02024: 19
Where Dr. Tsiamtsiouris' Medicare services took place, 2024
- In an office3,71577%
- In a facility1,11923%
Dr. Tsiamtsiouris compared with the New York median for interventional cardiologists, 2024
- Dr. Tsiamtsiouris
- New York median
- Medicare services
- 4,834vs 9765.0 times
- Medicare patients
- 1,363vs 3414.0 times
- Part D claims
- 9,190vs 9369.8 times
Medians across 352 interventional cardiologists in New York with Dmand AI profiles that report each measure.
Dr. Tsiamtsiouris' 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. Tsiamtsiouris?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tsiamtsiouris and other interventional cardiologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Theofanis Tsiamtsiouris treated 1,363 Medicare patients in 2024, average age 77
CMS counts 1,363 Medicare patients who saw Dr. Tsiamtsiouris in 2024. The largest group is 75 to 84, with 595 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tsiamtsiouris' median patient age at 70, with 40% women.
Dr. Tsiamtsiouris' Medicare patients by age, 2024
Dr. Tsiamtsiouris' Medicare patients by sex, 2024
- Women67349%
- Men69051%
Chronic conditions among Dr. Tsiamtsiouris' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease65%
- Arthritis52%
- Diabetes37%
- Atrial fibrillation33%
- Heart failure25%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tsiamtsiouris' 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
- Women40%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Theofanis Tsiamtsiouris wrote 9,553 Medicare Part D claims in 2024
In 2024, Dr. Tsiamtsiouris wrote 9,553 Medicare Part D claims for 1,150 patients. 86% of them were for generic drugs. CMS names the drug for 9,190 of them, across 84 drugs with 11 or more claims each, at $1,736,174 in total drug cost. In 2023, CMS named 8,677 claims across 88 drugs.
Dr. Tsiamtsiouris' Part D claims by kind of drug, 2024
- Generic8,203 claims86%
- Brand-name and other1,350 claims14%
Dr. Tsiamtsiouris' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Tsiamtsiouris' Part D claims, 2024
- Antibiotics0%26 of 9,553 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8,6772024: 9,1906%
Drugs named by CMS: 84 in 2024, 88 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Theofanis Tsiamtsiouris ranks in the 77th percentile for coronary angioplasty and stenting in Medicare
Dr. Tsiamtsiouris accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 41 procedures of coronary angioplasty and stenting by Dr. Tsiamtsiouris, more than 77% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Tsiamtsiouris ranks in Medicare procedure volume
- Coronary angioplasty and stenting
- 77th percentile41 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Theofanis Tsiamtsiouris received $5,099 in industry payments from 2016 to 2025
CMS Open Payments shows 188 general payments to Dr. Tsiamtsiouris from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,189.
General payments to Dr. Tsiamtsiouris by program year, 2016 to 2025
General payments to Dr. Tsiamtsiouris by kind, 2016 to 2025
- Food and beverage$5,090100%
- Education$90%
Companies that paid Dr. Tsiamtsiouris the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Theofanis Tsiamtsiouris has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tsiamtsiouris.
Awards and honors for Dr. Tsiamtsiouris
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. Theofanis Tsiamtsiouris graduated from Stony Brook University Health Sciences Center School of Medicine
Dr. Tsiamtsiouris graduated from Stony Brook University Health Sciences Center School of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Theofanis Tsiamtsiouris accepts plans from 16 insurance carriers
Dr. Tsiamtsiouris is in network with 16 carriers, including Elevance, Aetna and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +8 more carriersWith a free account
Plan types Dr. Tsiamtsiouris accepts, by number of carriers
- PPO11
- Medicare10
- HMO8
- POS6
- EPO5
- Medicaid3
Source: Dmand AI Insurance Network Data
Sources for Dr. Theofanis Tsiamtsiouris'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Theofanis Tsiamtsiouris
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. Theofanis Tsiamtsiouris' NPI number?
Dr. Theofanis Tsiamtsiouris' NPI number is 1306897541. It was assigned on May 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Theofanis Tsiamtsiouris?
Dr. Theofanis Tsiamtsiouris is an interventional cardiologist in Roslyn, New York. The primary specialty in the NPI Registry is Interventional Cardiology Physician (taxonomy code 207RI0011X).
Where does Dr. Theofanis Tsiamtsiouris practice?
Dr. Tsiamtsiouris practices at 100 Port Washington Boulevard, Roslyn, NY 11576. Dr. Tsiamtsiouris' primary practice is St. Francis Hospital & Heart Center in Roslyn, New York, part of Diocese of Rockville Centre. Dmand AI also links Dr. Tsiamtsiouris to 2 hospitals.
What is Dr. Theofanis Tsiamtsiouris' office phone number?
The practice phone on file for Dr. Tsiamtsiouris is (516) 562-6000.
What is Dr. Theofanis Tsiamtsiouris' medical license number?
Dr. Tsiamtsiouris holds New York license 1984011.
Which hospitals is Dr. Theofanis Tsiamtsiouris affiliated with?
Dr. Tsiamtsiouris practices at St. Francis Hospital & Heart Center in Roslyn, New York. Dr. Tsiamtsiouris is also affiliated with Good Samaritan University Hospital. Dmand AI links Dr. Tsiamtsiouris to 2 more hospitals.
What medical group is Dr. Theofanis Tsiamtsiouris part of?
Dr. Tsiamtsiouris is linked to Cardiac Interventional Group.
Does Dr. Theofanis Tsiamtsiouris accept Medicare?
Yes. CMS data shows Dr. Tsiamtsiouris billed Medicare for 4,834 services in 2024, and Dr. Tsiamtsiouris accepts Medicare assignment.
How many Medicare patients does Dr. Theofanis Tsiamtsiouris see?
CMS counts 1,363 Medicare patients who saw Dr. Tsiamtsiouris in 2024, with an average age of 77.
What services does Dr. Theofanis Tsiamtsiouris bill to Medicare?
In 2024, Dr. Tsiamtsiouris' most billed Medicare services were heart test or procedure (93000), office visit, established patient (99213) and hospital inpatient care (99233).
Show 5 more questionsShow fewer questions
Where did Dr. Theofanis Tsiamtsiouris go to medical school?
Dr. Tsiamtsiouris graduated from Stony Brook University Health Sciences Center School of Medicine in 1993.
What drugs does Dr. Theofanis Tsiamtsiouris prescribe most?
In 2024 Medicare Part D data, Dr. Tsiamtsiouris' most prescribed drugs by claims were Rosuvastatin Calcium, Metoprolol Succinate and Atorvastatin Calcium.
Has Dr. Theofanis Tsiamtsiouris received payments from drug or device companies?
CMS Open Payments shows $5,099 in general payments to Dr. Tsiamtsiouris from 20 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Theofanis Tsiamtsiouris been practicing?
Dr. Tsiamtsiouris graduated from medical school in 1993, 33 years ago.
What insurance does Dr. Theofanis Tsiamtsiouris accept?
Dr. Tsiamtsiouris is in network with 16 carriers, including Elevance, Aetna and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
Selling to interventional cardiology practices?
See interventional cardiologists in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card