Quick answers
- Which hospitals does Joseph M. Nussbaum work at?
- Medicare's official clinician data lists Joseph M. Nussbaum at 4 hospitals: California Hospital Medical Center LA, Hollywood Presbyterian Medical Center, Los Angeles General Medical Center and PIH Health Good Samaritan Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joseph M. Nussbaum see patients?
- Medicare's clinician data lists 3 practice locations, including Los Angeles, CA and Westlake Village, CA. Call before your visit to confirm the address.
- What is Joseph M. Nussbaum's specialty?
- Medicare lists Infectious Disease as the primary specialty, and also Internal Medicine.
- Does Joseph M. Nussbaum accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph M. Nussbaum 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 Joseph M. Nussbaum?
- (213) 861-8700, as listed in official Medicare / NPI Registry data.
- What is Joseph M. Nussbaum's NPI number?
- 1922033463. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joseph M. Nussbaum works
Medicare's Facility Affiliation Data lists Joseph M. Nussbaum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- California Hospital Medical Center LALos Angeles, CA · Acute Care Hospital · CCN 050149
- Hollywood Presbyterian Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050063
- Los Angeles General Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050373
- PIH Health Good Samaritan HospitalLos Angeles, CA · Acute Care Hospital · CCN 050471
Practice locations
Addresses where Joseph M. Nussbaum is enrolled with Medicare (CMS data updated 2026-10-02).
- 1075 N Western Ave, Suite 110Los Angeles, CA 90029 (213) 861‑8700
- 1120 W Washington BlvdLos Angeles, CA 90015 (213) 623‑2225
- 2535 Townsgate Rd, Suite 100Westlake Village, CA 91361 (213) 483‑0901
Group practices
Medicare enrollment lists Joseph M. Nussbaum as a member of these groups (CMS data updated 2026-10-02).
- Healthcare Partners Affiliates Medical Group754 clinicians in the group
- Southern California Infectious Disease Medical Group3 clinicians in the group
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922033463 |
| 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