Quick answers
- Which hospitals does Sidney H. Allison work at?
- Medicare's official clinician data lists Sidney H. Allison at 5 hospitals: Swedish Issaquah, Swedish Medical Center, Swedish Medical Center / Cherry Hill, Valley Medical Center and Zuckerberg San Francisco General Hosp & Trauma Ctr. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sidney H. Allison see patients?
- Medicare's clinician data lists 5 practice locations, including San Francisco, CA, Colusa, CA and Renton, WA. Call before your visit to confirm the address.
- What is Sidney H. Allison's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Sidney H. Allison accept Medicare assignment?
- Medicare's clinician data says Sidney H. Allison may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Sidney H. Allison?
- (628) 206-4774, as listed in official Medicare / NPI Registry data.
- What is Sidney H. Allison's NPI number?
- 1275893752. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sidney H. Allison works
Medicare's Facility Affiliation Data lists Sidney H. Allison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Swedish IssaquahIssaquah, WA · Acute Care Hospital · CCN 500152
- Swedish Medical CenterSeattle, WA · Acute Care Hospital · CCN 500027
- Swedish Medical Center / Cherry HillSeattle, WA · Acute Care Hospital · CCN 500025
- Valley Medical CenterRenton, WA · Acute Care Hospital · CCN 500088
- Zuckerberg San Francisco General Hosp & Trauma CtrSan Francisco, CA · Acute Care Hospital · CCN 050228
Practice locations
Addresses where Sidney H. Allison is enrolled with Medicare (CMS data updated 2026-10-02).
- 1001 Potrero AveSan Francisco, CA 94110 (628) 206‑4774
- 173 E Webster StColusa, CA 95932 (209) 287‑6308
- 400 S 43rd StRenton, WA 98055 (425) 228‑3450
- 747 BroadwaySeattle, WA 98122 (206) 386‑6000
- 845 Jackson StSan Francisco, CA 94133 (415) 779‑8868
Group practices
Medicare enrollment lists Sidney H. Allison as a member of these groups (CMS data updated 2026-10-02).
- Swedish Health Services1,037 clinicians in the group
- University of California SFGH Medical Group587 clinicians in the group
- Valley Medical Group-Renton411 clinicians in the group
- American Specialty Physicians Group Inc100 clinicians in the group
- San Francisco Unified Physicians Group, Inc19 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1275893752 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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