YOLANDA G. DIAZ O. D.
NPI 1801969019
Optometrist in San Antonio, TX

Q: What is Yolanda Diaz's NPI number?

The NPI number for Yolanda Diaz is 1801969019. It was assigned to this individual provider in the NPPES registry on November 16, 2006.

Q: What is Yolanda Diaz'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 Yolanda Diaz was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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 November 16, 2006PECOS EnrolledAccepts Medicare Assignment

4025 E SOUTHCROSS BLVD STE 26, SAN ANTONIO, TX 78222(210) 932-4922(210) 932-0047 Get Directions Write a Review

NPPES record last updated: March 9, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 9, 2026, Jan 16, 2026, Jun 14, 2024 (3 updates tracked since 2024).

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About Yolanda G. Diaz O. D. NPPES

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

YOLANDA G. DIAZ O. D. (NPI 1801969019) is an individual optometrist in San Antonio, Texas, licensed in Texas (5481TG) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Antonio, and is a graduate of University Of Houston - College Of Optometry (1996).

NPPES Registry Identity

NPI1801969019

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameYOLANDA G. DIAZCredential: O. D.

Location Address4025 E SOUTHCROSS BLVD STE 26San Antonio, TX 78222-3640

Mailing Address4025 E Southcross Blvd Ste 26San Antonio, TX 78222-3640 · (210) 932-4922 · Fax (210) 932-0047

Phone(210) 932-4922

Fax(210) 932-0047

Sole ProprietorYes

Medical School CMSUniversity Of Houston - College Of OptometryGraduated 1996

Enumeration DateNovember 16, 2006

Last NPPES UpdateMarch 9, 20263 updates tracked since enumeration

NPPES CertifiedMarch 9, 2026

✔ NPI 1801969019 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in TX · 5481TG

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 · Corneal and Contact ManagementTaxonomy 152WC0802X · License 5481TG (TX)

Also ListedOptometrist · PediatricsTaxonomy 152WP0200X · License 5481TG (TX)

Also ListedOptometrist · Sports VisionTaxonomy 152WS0006X · License 5481TG (TX)

Also ListedOptometrist · Vision TherapyTaxonomy 152WV0400X · License 5481TG (TX)

4025 E SOUTHCROSS BLVD STE 26, San Antonio, TX 78222

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Secondary Practice Location 1

Location 11200 SE Military Dr, SUITE 112San Antonio, TX 78214-2804 · Phone (210) 932-4922 · Fax (210) 932-0047

Other Identifiers 1

Medicaid0192643-01TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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

Yolanda G. Diaz 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 ID4486616885

PECOS Enrollment IDI20041028000515

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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

13 services13 patients

Exam of visual field with intermediate testing 92082

An exam of the visual field with intermediate testing is a procedure that checks your peripheral (side) vision. It helps to identify blind spots which could be a sign of eye diseases. This non-invasive test is painless and quick.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78222 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$68.55 typical visit price

range $17.52 – $136.11

Typical copayment $17.13 (range $4.38 – $34.02)

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

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

SOUTHERN EYE CARE PLLC

Optometrist

4025 E SOUTHCROSS BLVD STE 26
SAN ANTONIO, TX 78222

Bexar County (210) 932-4922

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 Yolanda Diaz's NPI number?

The NPI number for Yolanda Diaz is 1801969019. It was assigned to this individual provider in the NPPES registry on November 16, 2006.

Where is Yolanda Diaz located?

Yolanda Diaz practices at 4025 E Southcross Blvd Ste 26, San Antonio, TX 78222. The listed phone number is (210) 932-4922.

What is Yolanda Diaz's specialty?

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

Is Yolanda Diaz enrolled in Medicare?

Yes. Yolanda Diaz 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 Yolanda Diaz accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 4 other insurers list Yolanda Diaz 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 Yolanda Diaz was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.