Yiannis Apergis, M.D.
NPI 1104176122 · Emergency Medicine Physician · Stamford, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yiannis Apergis, M.D. is a Emergency Medicine Physician provider in Stamford, CT (NPI 1104176122).
Provider details
- NPI number
- 1104176122
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 53299 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,670 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 637 | $80 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 591 | $121 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 218 | $117 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 87 | $177 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 32 | $133 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 21 | — |
| Spironolactone | 18 | — |
| Cefpodoxime Proxetil | 16 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
| Prednisone | 15 | 15 |
| Apixabanbrand: Eliquis | 13 | — |
| Lisinopril | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-09-18
- Last updated
- 2024-02-08
- Certified
- 2024-02-08
Frequently asked questions
- What is Yiannis Apergis's NPI number?
- Yiannis Apergis's National Provider Identifier (NPI) is 1104176122, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yiannis Apergis's specialty?
- Yiannis Apergis is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Yiannis Apergis located?
- Yiannis Apergis's practice location on file with NPPES is 1 Hospital Plz, Stamford, CT 06902-3602.
- What is Yiannis Apergis's phone number?
- The practice phone number listed in the NPPES registry for Yiannis Apergis is (203) 276-7298.
- Does Yiannis Apergis accept Medicare?
- Yiannis Apergis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yiannis Apergis's NPI active?
- Yes — Yiannis Apergis's NPI (1104176122) is active in the NPPES registry as of the last update on 2024-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.