Quick answers
- Which hospitals does Ari D. Baron work at?
- Medicare's official clinician data lists Ari D. Baron at 5 hospitals: California Pacific Medical Center - Mission Bernal…, California Pacific Medical Center- Van Ness Campus, California Pacific Medical Ctr-Davies Campus Hosp, Novato Community Hospital and Peninsula Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ari D. Baron see patients?
- Medicare's clinician data lists 2 practice locations, including San Francisco, CA. Call before your visit to confirm the address.
- What is Ari D. Baron's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Ari D. Baron accept Medicare assignment?
- Yes. Medicare's clinician data says Ari D. Baron 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.
- Does Ari D. Baron offer telehealth?
- Medicare's clinician data says Ari D. Baron offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ari D. Baron?
- (415) 923-3012, as listed in official Medicare / NPI Registry data.
- What is Ari D. Baron's NPI number?
- 1013086420. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ari D. Baron works
Medicare's Facility Affiliation Data lists Ari D. Baron at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- California Pacific Medical Center - Mission Bernal…San Francisco, CA · Acute Care Hospital · CCN 050055
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA · Acute Care Hospital · CCN 050047
- California Pacific Medical Ctr-Davies Campus HospSan Francisco, CA · Acute Care Hospital · CCN 050008
- Novato Community HospitalNovato, CA · Acute Care Hospital · CCN 050131
- Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · CCN 050007
Practice locations
Addresses where Ari D. Baron is enrolled with Medicare (CMS data updated 2026-10-02).
- 2100 Webster StSan Francisco, CA 94115 (415) 923‑3012
- 2100 Webster St, Suite 200San Francisco, CA 94115 (415) 600‑7860
Group practices
Medicare enrollment lists Ari D. Baron as a member of these groups (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
- Pacific Hematology Oncology Assoc.3 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1013086420 |
| 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