Philip Ian Rodriguez Tiamzon, OD
Optometrist · Yucaipa, CA
Philip Ian Rodriguez Tiamzon, OD is an optometrist with a practice address in Yucaipa, California, and NPI 1720669310, issued on Apr 15, 2021. Check the license (California 35189, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Philip Ian Rodriguez Tiamzon
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 35189 CA
Self-reported in NPPES; status is on the state search - Practice location
- 34806 Yucaipa Blvd, Yucaipa, CA 92399
- Phone
- (909) 797-0134
- Enumerated
- Apr 15, 2021
- Record last updated
- Aug 8, 2023
- Medicare enrollment
- Enrolled (PECOS I20231030003166); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2022
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 34806 Yucaipa Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sahil Dosaj, O.D.Optometrist1477995744
- Steven Miller, O.D.Optometrist1851356174
Verify Philip Ian Rodriguez Tiamzon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 35189Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $458.25
14 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- California Optometric CenterYucaipa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Philip Ian Rodriguez Tiamzon among 8,308 optometrist records in California
Philip Ian Rodriguez Tiamzon, OD is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 86% of them.
- NPI issued2021 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2022 · median 2008 among the 3,573 with a school on file
- Record last updated2023 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in California
There are 8,308 optometrist records in California.
All 8,308 in California → Every provider in Yucaipa → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Sahil Dosaj, O.D.Yucaipa, CA 923991477995744
- Steven Miller, O.D.Yucaipa, CA 923991851356174
- George SaundersYucaipa, CA 923991619092624
- Curtis Hoggarth, O.D.Victorville, CA 923951134125321
- Andrew Lee, ODVictorville, CA 923951891447496
- David Locken, O.D.Victorville, CA 923951558413526
- Rezah Mohamed, D.OVictorville, CA 923951104098292
- Kyle Schell, O.D.Victorville, CA 923951427104868
Common questions
What is Philip Ian Rodriguez Tiamzon, OD's NPI number?
Philip Ian Rodriguez Tiamzon, OD's National Provider Identifier (NPI) is 1720669310, issued on Apr 15, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Philip Ian Rodriguez Tiamzon, OD located?
The NPPES record lists a practice address at 34806 Yucaipa Blvd, Yucaipa, CA, 92399. Phone: (909) 797-0134. Providers update this record themselves, so call before visiting.
How can I verify Philip Ian Rodriguez Tiamzon, OD's license?
NPPES lists California license number 35189, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.