Kieutien Phan Tonnu, O.D.
Optometrist · Pomona, CA
Kieutien Phan Tonnu, O.D. is an optometrist with a practice address in Pomona, California, and NPI 1639331614, issued on Jun 30, 2008. Check the license (California 10429T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kieutien Phan Tonnu
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 10429T CA
Self-reported in NPPES; status is on the state search - Practice location
- 1101 E Holt Ave, Pomona, CA 91767
- Phone
- (909) 620-4546
- Enumerated
- Jun 30, 2008
- Record last updated
- Sep 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (909) 620-4546
- Medicaid ID
- SD0104290 CA
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1101 E Holt Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gloria Ha Chung, D.O.Pediatrics Physician1134362205
Verify Kieutien Phan Tonnu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 10429TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average optometrist in 2024
257 Medicare Part D claims for 61 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 94% of claims.
Most prescribed
- Xiidra109 claims
- Restasis71 claims
- Cyclosporine48 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Kieutien Phan Tonnu among 8,308 optometrist records in California
Kieutien Phan Tonnu, O.D. 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 2008, is newer than 54% of them.
- NPI issued2008 · 54% of these records are older, 43% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2014 · 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).
52 optometrist records list a practice address in Pomona
They are 52 of the 5,102 NPPES records with a practice address in Pomona, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Pomona → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Victoria Cun, O.D.Pomona, CA 917671801226998
- Khanh Le, O.D.Pomona, CA 917671760526842
- Jennifer Le, ODPomona, CA 917671932938883
- Robert Schoenberg, ODPomona, CA 917671518921436
- Angel Barajas, ODPomona, CA 917661457825788
- Joseph Botrus, ODPomona, CA 917661174366090
- Jacqueline Dang, ODPomona, CA 917661770347502
- Jacqueline Gomez, ODPomona, CA 917661811673817
Common questions
What is Kieutien Phan Tonnu, O.D.'s NPI number?
Kieutien Phan Tonnu, O.D.'s National Provider Identifier (NPI) is 1639331614, issued on Jun 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kieutien Phan Tonnu, O.D. located?
The NPPES record lists a practice address at 1101 E Holt Ave, Pomona, CA, 91767. Phone: (909) 620-4546. Providers update this record themselves, so call before visiting.
How can I verify Kieutien Phan Tonnu, O.D.'s license?
NPPES lists California license number 10429T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kieutien Phan Tonnu, O.D. prescribe under Medicare Part D?
In 2024, Kieutien Phan Tonnu, O.D. had 257 Medicare Part D claims for 61 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions 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.