Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Yiannis Apergis, MD

Individual provider Internal Medicine Physician · NPI 1104176122

Dr. Yiannis Apergis, MD practises Internal Medicine in Stamford, Connecticut. Qualified in 2011, 15 years ago. Practices with Stamford Health Medical Group Inc, a 432-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
15
Licensed in
CT
In the registry since
2012
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Hospital Plz
Stamford, CT 06902-3602
Phone: (203) 276-7298
Fax: (203) 276-4842
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 053299 (CT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 53299 (CT)
Hospitalist Physician Taxonomy 208M00000X · Licence 053299 (CT)

Record details

NPI number1104176122
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 18, 2012
Last updated in NPPESFebruary 8, 2024
Certification dateFebruary 8, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Stamford Health Medical Group Inc — 432 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients611
Services billed 1,686 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Stamford Health Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 432 clinicians in the practice; 12 are shown here.

Other providers in Stamford