Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. William Mandrick, WILLIAMMANDRICK

Individual provider Ophthalmology Physician · NPI 1932270097

Dr. William Mandrick, WILLIAMMANDRICK practises Ophthalmology in Encino, California. Graduated from University of California, Geffen School of Medicine in 1993, 33 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
33
Trained at
University of California, Geffen School of Medicine
Licensed in
CA
In the registry since
2006
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Practice location Address checks out

17310 Ventura Blvd
Encino, CA 91316-3904 Not confirmed with CMS for 19 years — call before visiting
Phone: (818) 728-4260
Show map & directions

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

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G83686 (CA)

Record details

NPI number1932270097
Entity typeIndividual (Type 1)
GenderMale
Credentials WILLIAMMANDRICK
Sole proprietorNo
NPI enumeratedNovember 12, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Cataract surgery 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients2,179
Services billed 3,318 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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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