Quick answers
- Which hospitals does Lawrence C. Chang work at?
- Medicare's official clinician data lists Lawrence C. Chang at 2 hospitals: Memorialcare Saddleback Medical Center and Providence Mission Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lawrence C. Chang see patients?
- Medicare's clinician data lists 1 practice location in San Clemente, CA. Call before your visit to confirm the address.
- What is Lawrence C. Chang's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Geriatric Medicine.
- Does Lawrence C. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Lawrence C. Chang 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 Lawrence C. Chang offer telehealth?
- Medicare's clinician data says Lawrence C. Chang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Lawrence C. Chang?
- (949) 240-9664, as listed in official Medicare / NPI Registry data.
- What is Lawrence C. Chang's NPI number?
- 1528046430. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lawrence C. Chang works
Medicare's Facility Affiliation Data lists Lawrence C. Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · CCN 050603
- Providence Mission HospitalMission Viejo, CA · Acute Care Hospital · CCN 050567
Practice locations
Addresses where Lawrence C. Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 665 Camino De Los Mares, Suite 301San Clemente, CA 92673 (949) 240‑9664
Specialties
- Internal Medicineprimary
- Geriatric Medicinealso
Other internal medicine doctors in San Clemente
Clinicians with the same Medicare primary specialty in San Clemente, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1528046430 |
| 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