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KATHERINE WILLIAMS M.D.
NPI 1326492588
Ophthalmology in Houston, TX

Active since April 14, 2016PECOS Enrolled
1977 BUTLER BLVD FL 2, HOUSTON, TX 77030(713) 798-6100 Get Directions Write a Review

NPPES record last updated: February 6, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Feb 6, 2026, Dec 1, 2025, Aug 25, 2021 and 1 more (4 updates tracked since 2020).

About Katherine Williams M.d. NPPES

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

KATHERINE WILLIAMS M.D. (NPI 1326492588) is an individual ophthalmology provider in Houston, Texas, licensed in Texas (S6554) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1326492588
Entity TypeIndividualFemale
Primary Taxonomy207W00000X
Provider Legal NameKATHERINE WILLIAMSCredential: M.D.
Location Address1977 BUTLER BLVD FL 2Houston, TX 77030-4101
Mailing Address1977 Butler Blvd Fl 2Houston, TX 77030-4101
Phone(713) 798-6100
Sole ProprietorYes
Enumeration DateApril 14, 2016
Last NPPES UpdateFebruary 6, 20264 updates tracked since enumeration
NPPES CertifiedFebruary 6, 2026
✔ NPI 1326492588 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in TX · S6554
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are 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, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Also ListedOphthalmology · Ophthalmic Plastic and Reconstructive SurgeryTaxonomy 207WX0200X · License S6554 (TX)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1977 BUTLER BLVD FL 2, Houston, TX 77030
Open in Google Maps ↗

Secondary Practice Location 1

Location 16701 Fannin St Fl 5Houston, TX 77030-2608 · Phone (832) 824-1000

Other Identifiers 2

Medicaid411638605TX
Medicaid411638606TX

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 (PECOS)

Katherine Williams M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 77030 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
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$72.62 typical visit price
range $18.60 – $143.93
Typical copayment $18.15 (range $4.65 – $35.98)
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 4

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

JANNA NGUYEN PHAM
Optometrist
1977 BUTLER BLVD FL 2
HOUSTON, TX 77030
Harris County (713) 798-6100
JOHN CHANCELLOR
Ophthalmology
1977 BUTLER BLVD FL 2
HOUSTON, TX 77030
Harris County (713) 798-6100
HAOCHEN XU MD
Ophthalmology
1977 BUTLER BLVD FL 2
HOUSTON, TX 77030
Harris County (713) 798-1000
KATIE SAMANTHA RAZINOVSKY OD
Optometrist
1977 BUTLER BLVD FL 2
HOUSTON, TX 77030
Harris County (713) 798-6100

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 Katherine Williams's NPI number?

The NPI number for Katherine Williams is 1326492588. It was assigned to this individual provider in the NPPES registry on April 14, 2016.

Where is Katherine Williams located?

Katherine Williams practices at 1977 Butler Blvd Fl 2, Houston, TX 77030. The listed phone number is (713) 798-6100.

What is Katherine Williams's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Katherine Williams enrolled in Medicare?

Yes. Katherine Williams is registered in the Medicare PECOS enrollment system.

What insurance does Katherine Williams 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 6 other insurers list Katherine Williams 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 Katherine Williams was last updated on February 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.