DR. REX AARON WERNER O.D.
NPI 1821259458
Optometrist in El Cajon, CA

Q: What is Rex Werner's NPI number?

The NPI number for Rex Werner is 1821259458. It was assigned to this individual provider in the NPPES registry on June 17, 2008.

Q: What is Rex Werner's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Rex Werner was last updated on June 17, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 17, 2008PECOS EnrolledAccepts Medicare Assignment

2650 JAMACHA RD, SUITE 155, EL CAJON, CA 92019(619) 670-6296(619) 670-8852 Get Directions Write a Review

NPPES record last updated: June 17, 2008. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. Rex Aaron Werner O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. REX AARON WERNER O.D. (NPI 1821259458) is an individual optometrist in El Cajon, California, licensed in California (CA 13478TPA) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS and is a graduate of Illinois College Of Optometry At Chicago (2008).

NPPES Registry Identity

NPI1821259458

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. REX AARON WERNERCredential: O.D.

Location Address2650 JAMACHA RD, SUITE 155El Cajon, CA 92019-4319

Mailing Address2650 Jamacha Rd, Suite 155El Cajon, CA 92019-4319 · (619) 670-6296 · Fax (619) 670-8852

Phone(619) 670-6296

Fax(619) 670-8852

Sole ProprietorYes

Medical School CMSIllinois College Of Optometry At ChicagoGraduated 2008

Enumeration DateJune 17, 2008

✔ NPI 1821259458 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in CA · CA 13478TPA

Definition

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.

Also ListedOptometrist · Vision TherapyTaxonomy 152WV0400X · License CA 13478TPA (CA)

2650 JAMACHA RD, El Cajon, CA 92019

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Rex Aaron Werner O.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4688867302

PECOS Enrollment IDI20101026000686

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92019 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

REX AARON WERNER OD, INC

Optometrist

2650 JAMACHA RD, 155
EL CAJON, CA 92019

San Diego County (619) 670-6296

WERNER OPTOMETRY, APC

Optometrist

2650 JAMACHA RD, SUITE 155
EL CAJON, CA 92019

San Diego County (619) 670-6296

DR. REX ARTHUR WERNER O.D.

Optometrist

2650 JAMACHA RD, SUITE 155
EL CAJON, CA 92019

San Diego County (619) 670-6296

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rex Werner's NPI number?

The NPI number for Rex Werner is 1821259458. It was assigned to this individual provider in the NPPES registry on June 17, 2008.

Where is Rex Werner located?

Rex Werner practices at 2650 Jamacha Rd Suite 155, El Cajon, CA 92019. The listed phone number is (619) 670-6296.

What is Rex Werner's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Rex Werner enrolled in Medicare?

Yes. Rex Werner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Rex Werner accept?

Health plans from Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 1 other insurer list Rex Werner as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Rex Werner was last updated on June 17, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.