Constantine Ioannou, M.D.
Psychiatry Physician · East Meadow, NY
Constantine Ioannou, M.D. is a psychiatry physician with a practice address in East Meadow, New York, and NPI 1124124003, issued on Sep 16, 2006. Check the license (New York 180863, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Constantine Ioannou
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 180863 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2201 Hempstead Tpke, East Meadow, NY 11554
- Phone
- (516) 572-6511
- Enumerated
- Sep 16, 2006
- Record last updated
- May 28, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 01845358 NY
- Medicare enrollment
- Enrolled (PECOS I20040323001988); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 6,589 in New York → Look up another NPI →
Also registered at 2201 Hempstead Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Drew Accordino, MDAnesthesiology Physician1275776122
Verify Constantine Ioannou 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 180863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average psychiatry physician in 2024
54 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Escitalopram Oxalate13 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Nassau Health Care CorporationEast Meadow, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Constantine Ioannou among 6,589 psychiatry physician records in New York
Constantine Ioannou, M.D. is one of 6,589 psychiatry physician records with a practice address in New York. 72% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated1985 · median 2002 among the 2,559 with a school on file
- Record last updated2014 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X 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 psychiatry physician records list a practice address in East Meadow
They are 36 of the 1,909 NPPES records with a practice address in East Meadow, and 6,589 psychiatry physician records in New York.
All 6,589 in New York → Every provider in East Meadow → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Robert Barris, M.D.East Meadow, NY 115541639131790
- Bruce David, D.O.East Meadow, NY 115541033171194
- Josephine De La Rosa, M.D.East Meadow, NY 115541508828047
- Javed Ghani, M.D.East Meadow, NY 115541407818941
- Seema HashmiEast Meadow, NY 115541982630430
- Kamil Jaghab, M.D.East Meadow, NY 115541447212998
- Nyapati Rao, MDEast Meadow, NY 115541801814090
- Majid Samad, M.D.East Meadow, NY 115541720040280
Common questions
What is Constantine Ioannou, M.D.'s NPI number?
Constantine Ioannou, M.D.'s National Provider Identifier (NPI) is 1124124003, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Constantine Ioannou, M.D. located?
The NPPES record lists a practice address at 2201 Hempstead Tpke, East Meadow, NY, 11554. Phone: (516) 572-6511. Providers update this record themselves, so call before visiting.
How can I verify Constantine Ioannou, M.D.'s license?
NPPES lists New York license number 180863, 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 Constantine Ioannou, M.D. prescribe under Medicare Part D?
In 2024, Constantine Ioannou, M.D. had 54 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is Constantine Ioannou, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.8 of 100, reported for the practice group. 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.