Vasilios Kalonaros, M.D.
Internal Medicine Physician · Smithtown, NY
Vasilios Kalonaros, M.D. is an internal medicine physician with a practice address in Smithtown, New York, and NPI 1376501296, issued on May 2, 2006. Check the license (New York 183593, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Vasilios Kalonaros
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 183593 NY
Self-reported in NPPES; status is on the state search - Practice location
- 50 Karl Ave Ste 301, Smithtown, NY 11787
- Phone
- (631) 239-1677
- Enumerated
- May 2, 2006
- Record last updated
- Jan 17, 2023
- Fax
- (631) 724-3967
- Medicaid ID
- 01201490 NY
- Medicare enrollment
- Enrolled (PECOS I20110719000081); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Verify Vasilios Kalonaros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 183593Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% more Medicare Part D claims than the average internal medicine physician in 2024
4,758 Medicare Part D claims for 262 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 229 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium212 claims
- Amlodipine Besylate141 claims
- Levothyroxine Sodium137 claims
- Atorvastatin Calcium128 claims
- Losartan Potassium122 claims
- Ozempic119 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 74.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Vasilios Kalonaros among 12,067 internal medicine physician records in New York
Vasilios Kalonaros, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1986 · median 2002 among the 7,221 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 internal medicine physician records list a practice address in Smithtown
They are 36 of the 1,907 NPPES records with a practice address in Smithtown, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Smithtown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michele Becker-Hamou, MDSmithtown, NY 117871700843067
- Deborah Blenner, M.D.Smithtown, NY 117871366497927
- Dara Brener, MDSmithtown, NY 117871750362695
- Paul Caiati, MDSmithtown, NY 117871063407898
- Joseph Calandrino, M.D.Smithtown, NY 117871962400796
- Neena Chaudhari, M.D.Smithtown, NY 117871811932890
- Michael Kaplan, DOSmithtown, NY 117871841298593
- Mickel Khlat, DOSmithtown, NY 117871548288954
Common questions
What is Vasilios Kalonaros, M.D.'s NPI number?
Vasilios Kalonaros, M.D.'s National Provider Identifier (NPI) is 1376501296, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Vasilios Kalonaros, M.D. located?
The NPPES record lists a practice address at 50 Karl Ave Ste 301, Smithtown, NY, 11787. Phone: (631) 239-1677. Providers update this record themselves, so call before visiting.
How can I verify Vasilios Kalonaros, M.D.'s license?
NPPES lists New York license number 183593, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Vasilios Kalonaros, M.D. prescribe under Medicare Part D?
In 2024, Vasilios Kalonaros, M.D. had 4,758 Medicare Part D claims for 262 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Vasilios Kalonaros, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.