Dr. Karthikeyan Viswanathan, DO
Dr. Karthikeyan Viswanathan, DO is an Internal Medicine in Los Altos, California. Qualified in 2014, 12 years ago. Licensed in California.
- Years since qualifying
- 12
- Licensed in
- CA
- In the registry since
- 2015
What do these letters mean?
- DO — Doctor of Osteopathic Medicine
- A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
Practice location Address checks out
4546 El Camino Real Ste B7Los Altos, CA 94022-1069
Phone: (866) 362-4246
Fax: (650) 260-6030
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Specialties & licences
| Internal Medicine Physician (primary) | Taxonomy 207R00000X · Licence 20A19044 (CA) |
|---|
Record details
| NPI number | 1396128336 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | DO |
| Sole proprietor | No |
| NPI enumerated | July 8, 2015 |
| Last updated in NPPES | August 21, 2025 |
| Certification date | August 21, 2025 |
| Mailing address | 4546 El Camino Real Ste B7, Los Altos, CA 94022-1069 |
Medicare enrollment
| Medicare specialty | INTERNAL MEDICINE |
|---|---|
| Medical school | OTHER |
| Graduated | 2014 (12 years in practice) |
| Accepts Medicare assignment | Not indicated |
| Practice locations | 5 on file with Medicare |
Other providers in Los Altos
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Karen Jill Suskiewicz, MD
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Paul Tang, MD
370 Distel Cir, Los Altos, CA 94022-1404 · (650) 254-5200
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Laurel Trujillo, MD
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Charles Tuchinda, MD
1965 Laver Ct, Los Altos, CA 94024-6723 · (617) 930-6428
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Heba Yassin Jioussy, MD
370 Distel Cir, Los Altos, CA 94022-1404 · (650) 254-5200