Dr. William Sierra
M.D. | Ophthalmologist | 51+ years Exp
4754 E Cesar E Chavez Ave, Los Angeles
California, 90022-1234
California, 90022-1234
323-909-0041 323-909-0042Maps & Directions
Dr. William Sierra Details:
Dr. William Sierra is a Los Angeles, California based male Ophthalmologist with 51 years of experience in Ophthalmology. He completed his graduation from Loma Linda University School Of Medicine in 1975. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. William Sierra is G32593 for Ophthalmology in California.
Dr. William Sierra is medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, patients can be prescribed vision services, including glasses and contact lenses.
Dr. William Sierra is medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, patients can be prescribed vision services, including glasses and contact lenses.
Complete Profile:
Dr. William Sierra speciality, credentials, practice address, contact phone number and fax are as below.
Patients can directly walk in or can call on the below given phone number for appointment.
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| PAC ID: | 2365401205 |
| Enrollment ID: | I20041006001460 |
| NPI Number: | 1275552796 |
| NPI Enumeration Date: | 18 Jul, 2006 |
| NPI Last Update On: | 23 Aug, 2016 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. William Sierra are as mentioned below.| License Number | Specialization | State | Status | |
| G32593 | Ophthalmology | California | Primary |
Other Medical Identifiers:
Other legacy medical identifiers associated with Dr. William Sierra such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| 00G325931 | Medicaid | California | |
| G32593A | Other | California | MEDICARE NUMBER |
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Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | 4754 E Cesar E Chavez Ave, Los Angeles, California |
| Zip: | 90022-1234 |
| Phone Number: | 323-909-0041 |
| Fax Number: | 323-909-0042 |
Patients can reach Dr. William Sierra at 4754 E Cesar E Chavez Ave, Los Angeles, California or can call to book an appointment on 323-909-0041.
Comments/ Reviews:
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** Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.
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