Huan Guan, O.D.
Optometrist · Davis, CA
Huan Guan, O.D. is an optometrist with a practice address in Davis, California, and NPI 1336379247, issued on Jul 27, 2009. Check the license (California OPT 13801 TLG, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Huan Guan
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT 13801 TLG CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Shields Ave, Davis, CA 95616
- Phone
- (530) 752-2300
- Enumerated
- Jul 27, 2009
- Record last updated
- Feb 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1 Shields Ave
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Verify Huan Guan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT 13801 TLGCheck 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: $405.57
11 payments; by number, the most common kind was food and beverage; the largest payer was Johnson & Johnson Vision Care, 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.
Huan Guan among 8,308 optometrist records in California
Huan Guan, 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 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 41% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2020 · 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).
21 optometrist records list a practice address in Davis
They are 21 of the 1,711 NPPES records with a practice address in Davis, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Davis → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Alex Baker, O.D.Davis, CA 956161427287598
- Christine Chao, O.D.Davis, CA 956161437125523
- Dena Davidson, ODDavis, CA 956161629090659
- Melissa Erickson, O.D.Davis, CA 956161730163601
- Dennis Guerrieri, O.D.Davis, CA 956161366436917
- Joann Helmus, O.D.Davis, CA 956161689656894
- Mark Helmus, O.D.Davis, CA 956161558343905
- Julie Helmus, O.D.Davis, CA 956161376895607
Common questions
What is Huan Guan, O.D.'s NPI number?
Huan Guan, O.D.'s National Provider Identifier (NPI) is 1336379247, issued on Jul 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Huan Guan, O.D. located?
The NPPES record lists a practice address at 1 Shields Ave, Davis, CA, 95616. Phone: (530) 752-2300. Providers update this record themselves, so call before visiting.
How can I verify Huan Guan, O.D.'s license?
NPPES lists California license number OPT 13801 TLG, 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.