Quick answers
- Which hospitals does David C. Greenstein work at?
- Medicare's official clinician data lists David C. Greenstein at 1 hospital: Memorialcare Long Beach Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David C. Greenstein see patients?
- Medicare's clinician data lists 3 practice locations, including Santa Clarita, CA and Long Beach, CA. Call before your visit to confirm the address.
- What is David C. Greenstein's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does David C. Greenstein accept Medicare assignment?
- Yes. Medicare's clinician data says David C. Greenstein 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 David C. Greenstein?
- (661) 799-8300, as listed in official Medicare / NPI Registry data.
- What is David C. Greenstein's NPI number?
- 1578023826. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David C. Greenstein works
Medicare's Facility Affiliation Data lists David C. Greenstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorialcare Long Beach Medical CenterLong Beach, CA · Acute Care Hospital · CCN 050485
Practice locations
Addresses where David C. Greenstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 26357 McBean Pkwy, Suite 100Santa Clarita, CA 91355 (661) 799‑8300
- 2801 Atlantic AveLong Beach, CA 90806 (562) 933‑5437
- 2880 Atlantic Ave, Suite 160Long Beach, CA 90806 (562) 453‑3814
Group practices
Medicare enrollment lists David C. Greenstein as a member of these groups (CMS data updated 2026-10-02).
- Cep America - Anesthesia PC849 clinicians in the group
- California Anesthesia Associates Medical Group Inc49 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Santa Clarita
Clinicians with the same Medicare primary specialty in Santa Clarita, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578023826 |
| 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