DR. WILLIAM LASSITER HOLMES IV MD
NPI 1063161065
Family Medicine in Houston, TX

Q: What is William Holmes's NPI number?

The NPI number for William Holmes is 1063161065. It was assigned to this individual provider in the NPPES registry on March 18, 2022.

Q: What is William Holmes's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for William Holmes was last updated on January 26, 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.

Active since March 18, 2022PECOS Enrolled

1100 W 34TH ST, HOUSTON, TX 77018(713) 861-3939 Get Directions Write a Review

NPPES record last updated: January 26, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. William Lassiter Holmes Iv Md NPPES

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

DR. WILLIAM LASSITER HOLMES IV MD (NPI 1063161065) is an individual family medicine provider in Houston, Texas, licensed in Texas (V8283) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1063161065

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. WILLIAM LASSITER HOLMES IVCredential: MD

Location Address1100 W 34TH STHouston, TX 77018-6206

Mailing Address1100 W 34th StHouston, TX 77018-6206 · (713) 861-3939

Phone(713) 861-3939

Sole ProprietorNo

Enumeration DateMarch 18, 2022

Last NPPES UpdateJanuary 26, 2026

NPPES CertifiedJanuary 26, 2026

✔ NPI 1063161065 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in TX · V8283

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1100 W 34TH ST, Houston, TX 77018

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Lassiter Holmes Iv Md 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 77018 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

$90.40 typical visit price

range $58.24 – $176.98

Typical copayment $22.60 (range $14.56 – $44.24)

Most-billed visit code 99203

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.

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Other Providers at the Same Location NPPES 20

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

ERIC WARWICK MD

Family Medicine