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

Syed Ommar Hassan, MD

Individual provider Geriatric Medicine (Family Medicine) Physician · NPI 1063637544

Syed Ommar Hassan, MD is a Family Practice in McHenry, Illinois. Qualified in 1998, 28 years ago. Practices with Mercy Health System Corporation, a 751-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Ohio.

Years since qualifying
28
Licensed in
IL, OH
In the registry since
2007
Specialties on file
4
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

3922 Mercy Dr
McHenry, IL 60050-3179
Phone: (815) 344-4499
Fax: (815) 344-4779
Show map & directions

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

Additional practice locations (1)

  • 875 S. Route 31, Crystal Lake, IL 60014 — (779) 220-5500

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036133790 (IL)
Geriatric Medicine (Family Medicine) Physician Taxonomy 207QG0300X · Licence 036133790 (IL)
Family Medicine Physician Taxonomy 207Q00000X · Licence 57012414 (OH)
Urgent Care Clinic/Center Taxonomy 261QU0200X · Licence 036133790 (IL)

Record details

NPI number1063637544
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2007
Last updated in NPPESMay 12, 2026
Certification dateMay 12, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesGERIATRIC MEDICINE
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Mercy Health System Corporation — 751 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services