Quick answers
- Which hospitals does Michelle Aszterbaum work at?
- Medicare's official clinician data lists Michelle Aszterbaum at 2 hospitals: Hoag Memorial Hospital Presbyterian and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michelle Aszterbaum see patients?
- Medicare's clinician data lists 2 practice locations, including Orange, CA and Newport Beach, CA. Call before your visit to confirm the address.
- What is Michelle Aszterbaum's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Michelle Aszterbaum accept Medicare assignment?
- Yes. Medicare's clinician data says Michelle Aszterbaum 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 Michelle Aszterbaum?
- (714) 456-7004, as listed in official Medicare / NPI Registry data.
- What is Michelle Aszterbaum's NPI number?
- 1992891329. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michelle Aszterbaum works
Medicare's Facility Affiliation Data lists Michelle Aszterbaum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · CCN 050224
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Michelle Aszterbaum is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 the City Dr SOrange, CA 92868 (714) 456‑7004
- 360 San Miguel Dr, Suite 406Newport Beach, CA 92660 (949) 525‑0700
Group practices
Medicare enrollment lists Michelle Aszterbaum as a member of these groups (CMS data updated 2026-10-02).
- UCI Department of Dermatology39 clinicians in the group
- Michelle Aszterbaum MD Inc3 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Orange
Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992891329 |
| 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