Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. KARTHIKEYAN VISWANATHAN, DO
ActiveDR. KARTHIKEYAN VISWANATHAN, DO is a Internal Medicine healthcare provider located in LOS ALTOS, California. NPI 1396128336 is currently active in the NPPES registry. Verify at CMS.
Internal Medicine · LOS ALTOS, CA
Registration Details
- NPI Number
- 1396128336
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Jul 8, 2015 (11.11863622681 yrs)
- Last Updated
- Aug 21, 2025
- License
-
20A19044 (CA)
Practice Information
- Address
-
4546 EL CAMINO REAL STE B7LOS ALTOS, CA, 940221069Browse CA providers · Browse ZIP 94022
- Phone
- 8663624246
- Fax
- 6502606030
- Primary Specialty
-
Internal Medicine
207R00000X
Other Internal Medicine Providers in LOS ALTOS, CA
| Name | Credential | NPI |
|---|---|---|
| KAREN JILL SUSKIEWICZ | MD | 1770508533 |
| PAUL TANG | M.D. | 1043327737 |
| PATRICIA ROUKEE SITNITSKY | M.D. | 1790896231 |
| FRANCIS LASTUFKA | MD | 1144312141 |
| DIANNE STOREY | MD | 1740372259 |
| RONDA MACCHELLO | MD | 1114019742 |
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.