NPPES file of Aug 9, 2026

Ellie Proussaloglou, MD

Surgery Physician · New Haven, CT

Ellie Proussaloglou, MD is a surgery physician with a practice address in New Haven, Connecticut, and NPI 1639662638, issued on Jun 13, 2018. Check the license (Connecticut 72259, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639662638
Name
Ellie Proussaloglou
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License numbers
72259 CT
LP04392 RI
Self-reported in NPPES; status is on the state search
Practice location
20 York St, New Haven, CT 06510
Phone
(203) 688-4242
Enumerated
Jun 13, 2018
Record last updated
Aug 5, 2022
Medicare enrollment
Enrolled (PECOS I20231026003787); accepts Medicare assignment
Medical or professional school
University Of Chicago, Pritzker School Of Medicine, 2018
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 20 York St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cyrena Abbasi, MDStudent in an Organized Health Care Education/Training Program1609703289
  2. Ali Abboud, MD, MBAStudent in an Organized Health Care Education/Training Program1942943097
  3. Basil Abdalla, MDStudent in an Organized Health Care Education/Training Program1154905057
  4. Jasmina AbdallaStudent in an Organized Health Care Education/Training Program1700638590
  5. Sarah AbdallahPsychiatry Physician1740800952
  6. Usama Abdelghany, PHARM DOncology Pharmacist1548827843

Verify Ellie Proussaloglou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 72259
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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84% fewer Medicare Part D claims than the average surgery physician in 2024

23 Medicare Part D claims for 17 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Ellie Proussaloglou23
  2. Specialty average147

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): 73.6 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.

  1. Qualityout of 100 · 30% of the final score75.8
  2. Costout of 100 · 30%51.4
  3. Promoting interoperabilityout of 100 · 25%74.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $26.75

1 payment: food and beverage; the largest payer was Endomagnetics Ltd. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ellie Proussaloglou$26.75
  2. Specialty average$3,513.80

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Yale UniversityNew Haven, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ellie Proussaloglou among 360 surgery physician records in Connecticut

Ellie Proussaloglou, MD is one of 360 surgery physician records with a practice address in Connecticut. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 91% of them.

  • NPI issued2018 · 91% of these records are older, 4% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2018 · median 2002 among the 219 with a school on file
  • Record last updated2022 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Connecticut

There are 360 surgery physician records in Connecticut.

The 8 surgery physician records with the nearest ZIP codes

  1. Paul Barcewicz, M.D.New Haven, CT 065101164470548
  2. Andrew Duffy, M. D.New Haven, CT 065101386686152
  3. Mark Faries, M.D.New Haven, CT 065101659428969
  4. Courtney Gibson, MDNew Haven, CT 065101275746869
  5. Mehra Golshan, MDNew Haven, CT 065101982694113
  6. Andrew Graham, M.D.New Haven, CT 065101700804036
  7. Daniel Kim, M.D.New Haven, CT 065101639113806
  8. Adrian Maung, MDNew Haven, CT 065101043292147

Common questions

What is Ellie Proussaloglou, MD's NPI number?

Ellie Proussaloglou, MD's National Provider Identifier (NPI) is 1639662638, issued on Jun 13, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Ellie Proussaloglou, MD located?

The NPPES record lists a practice address at 20 York St, New Haven, CT, 06510. Phone: (203) 688-4242. Providers update this record themselves, so call before visiting.

How can I verify Ellie Proussaloglou, MD's license?

NPPES lists Connecticut license number 72259, 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 Ellie Proussaloglou, MD prescribe under Medicare Part D?

In 2024, Ellie Proussaloglou, MD had 23 Medicare Part D claims for 17 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

What is Ellie Proussaloglou, MD's MIPS final score?

The 2023 MIPS final score is 73.6 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.