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

Dr. Esther Alimboyao Sy, MD

Individual provider Family Medicine Physician · NPI 1659358703

Dr. Esther Alimboyao Sy, MD is a Family Practice in Rockford, Illinois. Qualified in 1989, 37 years ago. Practices with Swedishamerican Hospital, a 387-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
37
Licensed in
IL
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3401 N Perryville Rd
Rockford, IL 61114-8011
Phone: (815) 971-2000
Fax: (815) 971-9570
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3775 N Mulford Rd, Rockford, IL 61114-5632 — (779) 696-9202

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036097622 (IL)
Urgent Care Clinic/Center Taxonomy 261QU0200X · Licence 036097622 (IL)

Record details

NPI number1659358703
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 29, 2005
Last updated in NPPESApril 22, 2026
Certification dateApril 22, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Swedishamerican Hospital — 387 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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