Physician Profile
Unclaimed ProfileAbout SHIELDS
Based in Simi Valley, CA, William Samuel Shields, O.D. is listed in the NPI registry under optometry. William graduated from Southern California College of Optometry in 1991. William is also listed as specializing in optometrist. Medicare claims data shows William provided 299 services to 291 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (805) 527-6164
- Email not available
Practice Locations
2812 COCHRAN ST
Simi Valley, CA 93065
Procedures Most Often Billed to Medicare
299 services · 291 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Exam of visual field with intermediate testing | Treatment | 92082 |
142 |
| Established patient complete exam of visual system | Treatment | 92014 |
111 |
| New patient complete exam of visual system | Treatment | 92004 |
28 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometry specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Other optometry specialists in Simi Valley 7
Same specialty, same city.
Trained at Southern California College of Optometry 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1991 at Southern California College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Exam of visual field with intermediate testing 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Shields?
Dr. Shields is an optometry in Simi Valley, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPTOMETRY”.
NPI registry
What is Dr. Shields's address?
Dr. Shields is listed at 2812 COCHRAN ST, Simi Valley, CA 93065. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Shields?
The number on file is (805) 527-6164. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Shields?
Dr. Shields's National Provider Identifier is 1538165303. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Shields train?
Dr. Shields attended Southern California College of Optometry, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Shields have?
Dr. Shields has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Shields perform?
According to Medicare billing data, Dr. Shields provides treatments such as exam of visual field with intermediate testing and established patient complete exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Shields's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Shields. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.