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

Dr. Osama G. Ayad, MD, FACP

Individual provider Hematology (Internal Medicine) Physician · NPI 1427162288

Dr. Osama G. Ayad, MD, FACP is an Internal Medicine in Merrillville, Indiana. Qualified in 1987, 39 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
39
Licensed in
IN
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.
FACP — Fellow of the American College of Physicians
An internist admitted as a fellow of the ACP.

See every abbreviation used in this directory →

Practice location Address checks out

370 E 84th Dr Ste 200
Merrillville, IN 46410-6643
Phone: (121) 983-6109
Fax: (219) 836-1786
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 01066512A (IN)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 01066512A (IN)

Record details

NPI number1427162288
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , FACP
Sole proprietorYes
NPI enumeratedAugust 18, 2006
Last updated in NPPESJanuary 11, 2021
Certification dateJanuary 11, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHEMATOLOGY
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount