Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
HOWARD GUAN, M.D.
ActiveHOWARD GUAN, M.D. is a Glaucoma Specialist healthcare provider located in SAN MARCOS, California. NPI 1134427636 is currently active in the NPPES registry. Verify at CMS.
Glaucoma Specialist · SAN MARCOS, CA
Registration Details
- NPI Number
- 1134427636
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Mar 7, 2011 (15.461000989469 yrs)
- Last Updated
- Oct 21, 2025
- Licenses
-
A119766 (CA)A119766 (CA)
Practice Information
- Address
-
340 RANCHEROS DRIVESUITES 164/166SAN MARCOS, CA, 92069Browse CA providers · Browse ZIP 92069
- Phone
- 7605980400
- Fax
- 7602907044
- Primary Specialty
-
Glaucoma Specialist
207WX0009X
- Additional Specialty
- Glaucoma Specialist
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.