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Active NPI 1457451031 Individual Practitioner Male Practitioner

Dr. William John Shaffer , OD

Optometrist • Oxnard, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. William Shaffer, OD is a certified Optometrist practicing in Oxnard, CA. With approximately 53 years of clinical experience since graduating from Southern College Of Optometry in 1973, Dr. Shaffer delivers high-quality medical care to the local community at 340 S 5TH ST.

Dr. Shaffer accepts Medicare assignment.

Frequently performed procedures and clinical services include extended exam of the back part of the eye with retinal drawing, imaging of optic nerve, new patient complete exam of visual system. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

340 S 5th St

Oxnard, CA 930307043

Telephone 8054876363
Fax 8054869698
Associated Practice Facility / Clinic
🏢 Shaffer Vision Inc. Facility NPI 1871246298

Medicare Profile & Education

Medical School

Southern College Of Optometry

Graduation Year

1973

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Optometrist in Oxnard, CA

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
53 Yrs +31.4 yrs vs City Avg
City Avg: 21.6 Yrs
State Avg: 21.9 Yrs
Regional Practice Density
32 Specialists

Practicing in Oxnard, CA (8588 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
24.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Shaffer (53 Years) 53 Yrs
Oxnard Specialty Average (21.6 Years) 21.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
92201 Extended exam of the back part of the eye with retinal drawing
105 105 $60.00 $26.20
92133 Imaging of optic nerve
66 65 $120.00 $39.22
92004 New patient complete exam of visual system
62 62 $85.00 $83.80
92014 Established patient complete exam of visual system
51 51 $85.00 $83.74
92012 Established patient problem focused exam of visual system
20 11 $85.00 $83.71
92083 Exam of visual field with extended testing
13 13 $60.00 $59.19

Medical Specialties & State Licenses

Optometrist Primary Specialty

NUCC Taxonomy Code: 152W00000X

State License CA 5774T

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
SD0057742 (CA)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active May 14, 2008

NPI status registered as active in NPPES database

📍
Updated Practice Location May 14, 2008

Registered at 340 S 5TH ST, OXNARD, CA 930307043 (Tel: 8054876363)

📍
Updated Business Mailing Address May 14, 2008

Registered at 340 S 5TH ST, OXNARD, CA 930307043 (Tel: 8054876363)

👤
Provider Name / Credentials Updated May 14, 2008

Recorded as WILLIAM SHAFFER, O.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 14, 2008

Optometrist (License #5774T in CA)

🟢
Initial NPI Registration & Enumeration September 24, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1457451031
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 24, 2006
Last Update: May 14, 2008
Sole Proprietor: Yes

Mailing Address

340 S 5th St

Oxnard, CA 930307043

Phone: 8054876363

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.