Quick answers
- Where does Katharine Nelson see patients?
- Medicare's clinician data lists 1 practice location in San Jose, CA. Call before your visit to confirm the address.
- What is Katharine Nelson's specialty?
- Medicare lists Allergy/Immunology as the primary specialty, and also Internal Medicine.
- Does Katharine Nelson accept Medicare assignment?
- Yes. Medicare's clinician data says Katharine Nelson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Katharine Nelson?
- (408) 286-1707, as listed in official Medicare / NPI Registry data.
- What is Katharine Nelson's NPI number?
- 1497921811. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Katharine Nelson is enrolled with Medicare (CMS data updated 2026-10-02).
- 2211 Moorpark Ave, Suite 130San Jose, CA 95128 (408) 286‑1707
Group practices
Medicare enrollment lists Katharine Nelson as a member of this group (CMS data updated 2026-10-02).
- South Bay Allergy and Asthma Group Inc4 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Internal Medicinealso
Other allergist and immunologists in San Jose
Clinicians with the same Medicare primary specialty in San Jose, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497921811 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians