Quick answers
- Does Portia O. Shore accept Medicare assignment?
- Yes. Medicare's clinician data says Portia O. Shore accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Portia O. Shore see?
- In 2024, CMS data shows 359 Original Medicare patients and 950 services for Portia O. Shore. This counts Original Medicare only and measures volume, not quality.
- What is Portia O. Shore's NPI number?
- 1386274819. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Portia O. Shore, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 359 |
|---|---|
| Services billed to Medicare | 950 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)207 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)123 services
- Automated urinalysis test (81003)119 services
- Ultrasound measurement of bladder capacity after voiding (51798)85 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)28 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure74%
- Arthritis48%
- Ischemic heart disease37%
- Diabetes31%
- Chronic kidney disease26%
Practice locations
Addresses where Portia O. Shore is enrolled with Medicare (CMS data updated October 2, 2026).
- 370 Distel CirLos Altos, CA 94022 (650) 254‑5200
- 600 Coffee RdModesto, CA 95355 (916) 732‑4380
- 701 E El Camino RealMountain View, CA 94040 (650) 691‑6174
- 795 El Camino RealPalo Alto, CA 94301 (415) 600‑1020
Group practices
Medicare enrollment lists Portia O. Shore as a member of this group (CMS data updated October 2, 2026).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Los Altos
Clinicians with the same Medicare primary specialty in Los Altos, CA — not a recommendation.
Other clinicians in Sutter Bay Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386274819 |
| 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 October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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