Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GUY ANTHONY WILLIAMS II MD
NPI 1053978577
Pathology - Anatomic Pathology & Clinical Pathology in Houston, TX

Q: What is Guy Williams's NPI number?

The NPI number for Guy Williams is 1053978577. It was assigned to this individual provider in the NPPES registry on May 20, 2019.

Q: What is Guy Williams's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for Guy Williams was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days 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 May 20, 2019PECOS EnrolledAccepts Medicare Assignment

2525 W BELLFORT AVE, SUITE 120, HOUSTON, TX 77054(713) 741-6677 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 13, 2026, Jul 13, 2023, May 20, 2019 (3 updates tracked since 2019).

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About Dr. Guy Anthony Williams Ii Md NPPES

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

DR. GUY ANTHONY WILLIAMS II MD (NPI 1053978577) is an individual anatomic pathology & clinical pathology provider in Houston, Texas, licensed in Texas (V1920) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann Katy Hospital, and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1053978577

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. GUY ANTHONY WILLIAMS IICredential: MD

Location Address2525 W BELLFORT AVE, SUITE 120Houston, TX 77054

Mailing Address2525 W Bellfort Ave, Suite 120Houston, TX 77054

Phone(713) 741-6677

Sole ProprietorNo

Medical School CMSHoward University College Of MedicineGraduated 2019

Enumeration DateMay 20, 2019

Last NPPES UpdateJuly 13, 20263 updates tracked since enumeration

NPPES CertifiedJuly 13, 2026

✔ NPI 1053978577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

Licenses✔ Licensed in TX · V1920✔ Licensed in MD · D96579

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

2525 W BELLFORT AVE, SUITE 120, Houston, TX 77054

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Secondary Practice Location 1

Location 16670 Bertner Ave Ofc R2-216Houston, TX 77030-2602 · Phone (713) 441-1577

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.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. Guy Anthony Williams Ii Md 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 ID5395105910

PECOS Enrollment IDI20240802002509

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

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

58 services24 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Hermann Katy Hospital

Acute Care Hospitals · Katy, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450847

Location23900 Katy FreewayKaty, TX 77494 · Fort Bend County

Emergency services Birthing friendly

Memorial Hermann Sugar Land Hospital

Acute Care Hospitals · Sugar Land, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450848

Location17500 W Grand Parkway SouthSugar Land, TX 77479 · Fort Bend County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77054 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

$102.71 typical visit price

range $18.60 – $143.93

Typical copayment $25.67 (range $4.65 – $35.98)

Most-billed visit code 99214

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

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 Guy Williams's NPI number?

The NPI number for Guy Williams is 1053978577. It was assigned to this individual provider in the NPPES registry on May 20, 2019.

Where is Guy Williams located?

Guy Williams practices at 2525 W Bellfort Ave, Suite 120, Houston, TX 77054. The listed phone number is (713) 741-6677.

What is Guy Williams's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Guy Williams enrolled in Medicare?

Yes. Guy Williams 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 Guy Williams accept?

Health plans from Blue Cross and Blue Shield of Texas list Guy 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.

Is Guy Williams affiliated with any hospitals?

According to CMS data, Guy Williams is affiliated with Memorial Hermann Katy Hospital and Memorial Hermann Sugar Land Hospital.

When was this NPI record last updated?

The NPPES record for Guy Williams was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days 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.