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

Dr. John Howard Sirak, MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1568418622

Dr. John Howard Sirak, MD is a Cardiac Surgery in Lima, Ohio. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1991, 35 years ago. Practices with Mercy Health Physicians Lima Specialty Care LLC, a 255-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Ohio and Virginia.

Years since qualifying
35
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
OH, VA
In the registry since
2006
Specialties on file
2
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

830 W High St Ste 207
Lima, OH 45801-3975
Phone: (419) 996-4011
Fax: (419) 996-4012
Show map & directions

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

Additional practice locations (2)

  • 285 E State St Ste 400, Columbus, OH 43215-4368 — (614) 566-7370
  • 1802 Braeburn Dr, Salem, VA 24153-7357 — (540) 776-2020

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 35069230 (OH)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 0101257628 (VA)

Record details

NPI number1568418622
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 26, 2006
Last updated in NPPESMarch 30, 2022
Certification dateMarch 30, 2022

Medicare enrollment

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

Medicare specialtyCARDIAC SURGERY
Also practisesGENERAL SURGERY
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 1991 (35 years in practice)
Group practice Mercy Health Physicians Lima Specialty Care Llc — 255 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Lima