Yiannis Apergis, M.D.
Emergency Medicine Physician · Stamford, CT
Yiannis Apergis, M.D. is an emergency medicine physician with a practice address in Stamford, Connecticut, and NPI 1104176122, issued on Sep 18, 2012. Check the license (Connecticut 053299, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Yiannis Apergis
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 053299 CT
53299 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1 Hospital Plz, Stamford, CT 06902
- Phone
- (203) 276-7298
- Enumerated
- Sep 18, 2012
- Record last updated
- Feb 8, 2024
- Fax
- (203) 276-4842
- Medicare enrollment
- Enrolled (PECOS I20140813001473); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 846 in Connecticut → Look up another NPI →
Also registered at 1 Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Seun Adeyemi-Jones, M.D.Internal Medicine Physician1811335821
- Mathias Aihiokhai, PA-CPhysician Assistant1003270497
- Kiana AkhundzadehStudent in an Organized Health Care Education/Training Program1558115584
- Rachael AldermanStudent in an Organized Health Care Education/Training Program1912891318
- Kelsey AllenMedical Physician Assistant1326774282
- Micah Ambrose, DOEmergency Medicine Physician1962999482
Verify Yiannis Apergis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 053299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average emergency medicine physician in 2024
360 Medicare Part D claims for 144 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 17 claims were for opioids.
Most prescribed
- Furosemide21 claims
- Spironolactone18 claims
- Cefpodoxime Proxetil16 claims
- Amoxicillin-Clavulanate Potass15 claims
- Prednisone15 claims
- Eliquis13 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): 97.3 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).
Bills Medicare through 2 group practices
- Nuvance Health Medical Practice CT IncNorwalk, CT
- Stamford Health Medical Group IncStamford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yiannis Apergis among 846 emergency medicine physician records in Connecticut
Yiannis Apergis, M.D. is one of 846 emergency medicine physician records with a practice address in Connecticut. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 60% of them.
- NPI issued2012 · 60% of these records are older, 36% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2011 · median 2011 among the 574 with a school on file
- Record last updated2024 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Connecticut
There are 846 emergency medicine physician records in Connecticut.
All 846 in Connecticut → Every provider in Stamford → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Miriam Ambalu, MDStamford, CT 069021639126576
- Micah Ambrose, DOStamford, CT 069021962999482
- Mark Adrian Bell, DOStamford, CT 069021518428259
- Jomo Coddett, MDStamford, CT 069021336287143
- Jason Fischel, M.D.Stamford, CT 069021689879082
- Michael Francois, M.D.Stamford, CT 069021982139523
- Jason Greenbaum, MDStamford, CT 069021649205493
- Hieu Hong, MDStamford, CT 069021922662261
Common questions
What is Yiannis Apergis, M.D.'s NPI number?
Yiannis Apergis, M.D.'s National Provider Identifier (NPI) is 1104176122, issued on Sep 18, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Yiannis Apergis, M.D. located?
The NPPES record lists a practice address at 1 Hospital Plz, Stamford, CT, 06902. Phone: (203) 276-7298. Providers update this record themselves, so call before visiting.
How can I verify Yiannis Apergis, M.D.'s license?
NPPES lists Connecticut license number 053299, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Yiannis Apergis, M.D. prescribe under Medicare Part D?
In 2024, Yiannis Apergis, M.D. had 360 Medicare Part D claims for 144 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Yiannis Apergis, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.3 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.