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

Dr. John D Tassinari, OD

Individual provider Optometrist · NPI 1689770489

Dr. John D Tassinari, OD is registered under Optometry in Pomona, California. Graduated from Southern California College of Optometry in 1987, 39 years ago. Practices with Western University of Health Sciences, a 51-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
39
Trained at
Southern California College of Optometry
Licensed in
CA
In the registry since
2006
Specialties on file
3
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

795 E 2nd St Ste 2
Pomona, CA 91766-2007 Not confirmed with CMS for 10 years — call before visiting
Phone: (909) 706-3899
Fax: (909) 469-8640
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OPT8873TPG (CA)
Pediatric Optometrist Taxonomy 152WP0200X · Licence OPT8873TPG (CA)
Vision Therapy Optometrist Taxonomy 152WV0400X · Licence OPT8873TPG (CA)

Record details

NPI number1689770489
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedSeptember 16, 2006
Last updated in NPPESOctober 27, 2016

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolSOUTHERN CALIFORNIA COLLEGE OF OPTOMETRY
Graduated 1987 (39 years in practice)
Group practice Western University Of Health Sciences — 51 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $150 2 payments
Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $75 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Western University of Health Sciences

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 51 clinicians in the practice; 12 are shown here.

Other providers in Pomona