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

Dr. Mohammed S. Siddiqui, MD

Individual provider Geriatric Psychiatry Physician · NPI 1639456122

Dr. Mohammed S. Siddiqui, MD is a Psychiatry in Lombard, Illinois. Qualified in 1997, 29 years ago. Practices with Ottawa Regional Hospital and Healthcare Center, a 49-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
29
Licensed in
IL
In the registry since
2011
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

477 E Butterfield Rd Ste 102
Lombard, IL 60148-4880
Phone: (630) 528-3835
Fax: (630) 528-3837
Show map & directions

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

Specialties & licences

Geriatric Psychiatry Physician (primary) Taxonomy 2084P0805X · Licence 036-131386 (IL)

Record details

NPI number1639456122
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 10, 2011
Last updated in NPPESNovember 20, 2025
Certification dateNovember 20, 2025

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Also practisesGERIATRIC PSYCHIATRY
Medical schoolOTHER
Graduated 1997 (29 years in practice)
Group practice Ottawa Regional Hospital And Healthcare Center — 49 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare