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

Dr. Katherine Helen Hertzberg, OD

Individual provider Optometrist · NPI 1013117043

Dr. Katherine Helen Hertzberg, OD is registered under Optometry in Naperville, Illinois. Graduated from Illinois College of Optometry at Chicago in 2007, 19 years ago. Practices with Dr Raffertys Eye Encounters LLC, a 2-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
19
Trained at
Illinois College of Optometry at Chicago
Licensed in
IL
In the registry since
2007
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

29 S Webster St Ste 104
Naperville, IL 60540-5353 Not confirmed with CMS for 13 years — call before visiting
Phone: (630) 357-6880
Fax: (630) 357-6880
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 046010006 (IL)

Record details

NPI number1013117043
Entity typeIndividual (Type 1)
GenderFemale
Credentials OD
Sole proprietorNo
NPI enumeratedJuly 18, 2007
Last updated in NPPESOctober 10, 2012

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduated 2007 (19 years in practice)
Group practice Dr Raffertys Eye Encounters Llc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients109
Services billed 126 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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