Quick answers
- Which hospitals does Christopher Di Simone work at?
- Medicare's official clinician data lists Christopher Di Simone at 5 hospitals: Eisenhower Medical Center, Healdsburg Hospital, Petaluma Valley Hospital, Providence Santa Rosa Memorial Hospital and Sonoma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christopher Di Simone see patients?
- Medicare's clinician data lists 4 practice locations, including Santa Rosa, CA, Rancho Mirage, CA and La Quinta, CA. Call before your visit to confirm the address.
- What is Christopher Di Simone's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Christopher Di Simone accept Medicare assignment?
- Yes. Medicare's clinician data says Christopher Di Simone 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 Christopher Di Simone offer telehealth?
- Medicare's clinician data says Christopher Di Simone offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Christopher Di Simone?
- (707) 528-1050, as listed in official Medicare / NPI Registry data.
- What is Christopher Di Simone's NPI number?
- 1861461147. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christopher Di Simone works
Medicare's Facility Affiliation Data lists Christopher Di Simone at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Eisenhower Medical CenterRancho Mirage, CA · Acute Care Hospital · CCN 050573
- Healdsburg HospitalHealdsburg, CA · Critical Access Hospital · CCN 051321
- Petaluma Valley HospitalPetaluma, CA · Acute Care Hospital · CCN 050136
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA · Acute Care Hospital · CCN 050174
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · CCN 050090
Practice locations
Addresses where Christopher Di Simone is enrolled with Medicare (CMS data updated 2026-10-02).
- 3555 Round Barn CirSanta Rosa, CA 95403 (707) 528‑1050
- 39000 Bob Hope DrRancho Mirage, CA 92270 (760) 340‑3911
- 39950 Vista Del SolRancho Mirage, CA 92270 (760) 340‑0053
- 45280 Seeley DrLa Quinta, CA 92253 (760) 610‑7200
Group practices
Medicare enrollment lists Christopher Di Simone as a member of these groups (CMS data updated 2026-10-02).
- Providence Medical Foundation1,466 clinicians in the group
- Eisenhower Medical Center456 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Santa Rosa
Clinicians with the same Medicare primary specialty in Santa Rosa, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1861461147 |
| 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