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

Irene L Dejak, MD

Individual provider Obesity Medicine (Preventive Medicine) Physician · NPI 1407885411

Irene L Dejak, MD is an Internal Medicine in Cleveland, Ohio. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2000, 26 years ago. Practices with Summa Physicians LLC, a 688-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
26
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
OH
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

9500 Euclid Ave
Cleveland, OH 44195-0001
Phone: (800) 223-2273
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obesity Medicine (Internal Medicine) Physician (primary) Taxonomy 207RB0002X · Licence 3508-2166-D (OH)
Obesity Medicine (Preventive Medicine) Physician Taxonomy 2083B0002X · Licence OH35082166 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35082166 (OH)

Record details

NPI number1407885411
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 2, 2006
Last updated in NPPESAugust 3, 2026
Certification dateAugust 3, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 2000 (26 years in practice)
Group practice Summa Physicians Llc — 688 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare