1. Home
  2. Directory
  3. Texas
  4. Houston
  5. Pediatrics
  6. NPI Profile

THOMAS VASILY ISAACS
NPI 1831625565
Pediatrics - Pediatric Pulmonology in Houston, TX

Active since May 01, 2017PECOS Enrolled
6701 FANNIN ST, HOUSTON, TX 77030(832) 824-1000 Get Directions Write a Review

NPPES record last updated: February 28, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 28, 2025, Apr 19, 2024 (2 updates tracked since 2024).

About Thomas Vasily Isaacs NPPES

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

THOMAS VASILY ISAACS (NPI 1831625565) is an individual pediatric pulmonology provider in Houston, Texas, licensed in Texas (S5664) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1831625565
Entity TypeIndividualMale
Primary Taxonomy2080P0214X
Provider Legal NameTHOMAS VASILY ISAACS
Location Address6701 FANNIN STHouston, TX 77030-2608
Mailing Address2523 Bay Winds CtHouston, TX 77059-3181 · (281) 770-4780
Phone(832) 824-1000
Sole ProprietorNo
Enumeration DateMay 1, 2017
Last NPPES UpdateFebruary 28, 20252 updates tracked since enumeration
NPPES CertifiedFebruary 28, 2025
✔ NPI 1831625565 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric PulmonologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0214X
License✔ Licensed in TX · S5664
Definition
A pediatrician dedicated to the prevention and treatment of all respiratory diseases affecting infants, children and young adults. This specialist is knowledgeable about the growth and development of the lung, assessment of respiratory function in infants and children, and experienced in a variety of invasive and noninvasive diagnostic techniques.
Also ListedPediatrics · Sleep MedicineTaxonomy 2080S0012X · License S5664 (TX)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
6701 FANNIN ST, Houston, TX 77030
Open in Google Maps ↗

Secondary Practice Location 1

Location 12523 Bay Winds CtHouston, TX 77059-3181 · Phone (281) 770-4780

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas Vasily Isaacs 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.

Medicare Billing Reassignment

Medicare enrollment records show Thomas Isaacs reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Texas Children's Physician Group
0.1 mi
Pediatrics
6621 FANNIN ST
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Texas Childrens Physician Group
  • 2,498 clinicians in this Medicare group
NPI 1861675506 (832) 824-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

SONIA ANN MONTEIRO MD
Pediatrics (Developmental - Behavioral Pediatrics)
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
MEENAKSHI G HEGDE MD
Pediatrics (Pediatric Hematology-Oncology)
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
RYANN HATTORI CRNA
Nurse Anesthetist, Certified Registered
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
LAUREN WILSON CASEY PNP-AC
Nurse Practitioner
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
JACK DAVID MCGOWAN M.D.
Pediatrics (Neonatal-Perinatal Medicine)
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
MRS. TINA BRADSHAW PNP
Nurse Practitioner
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 822-1764
DR. GARY DAVID CLARK MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 822-5046
VERONICA A. VICTORIAN PA
Physician Assistant
6701 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000

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 Thomas Isaacs's NPI number?

The NPI number for Thomas Isaacs is 1831625565. It was assigned to this individual provider in the NPPES registry on May 1, 2017.

Where is Thomas Isaacs located?

Thomas Isaacs practices at 6701 Fannin St, Houston, TX 77030. The listed phone number is (832) 824-1000.

What is Thomas Isaacs's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Pulmonology, with taxonomy code 2080P0214X.

Is Thomas Isaacs enrolled in Medicare?

Yes. Thomas Isaacs is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Isaacs's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Isaacs reassigns Medicare benefits to Texas Children's Physician Group (Houston, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Isaacs's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Isaacs accept?

Health plans from Moda Health Plan, Inc. list Thomas Isaacs 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 Thomas Isaacs was last updated on February 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.