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

HOUSTON NORTHWEST RADIOLOGY ASSN
NPI 1023051851
Radiology - Diagnostic Radiology in Houston, TX

Active since June 13, 2006
800 PEAKWOOD DR STE 5E, HOUSTON, TX 77090(281) 440-5158(281) 206-9018 Get Directions Write a Review

NPPES record last updated: March 11, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Houston Northwest Radiology Assn NPPES

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

HOUSTON NORTHWEST RADIOLOGY ASSN (NPI 1023051851) is a healthcare organization registered as a diagnostic radiology in Houston, Texas and active in the NPI registry since June 2006. The organization lists Hai Ngoc Nguyen, Medical Director, as its authorized official.

NPPES Registry Identity

NPI1023051851
Entity TypeOrganization
Primary Taxonomy2085R0202X
Legal Business NameHOUSTON NORTHWEST RADIOLOGY ASSN
Location Address800 PEAKWOOD DR STE 5EHouston, TX 77090-2903
Mailing Address800 Peakwood Dr Ste 5eHouston, TX 77090-2903 · (281) 440-5158 · Fax (281) 206-9018
Phone(281) 440-5158
Fax(281) 206-9018
Organization SubpartNo
Authorized OfficialHai Ngoc NguyenMedical Director · (281) 440-5158
Enumeration DateJune 13, 2006
Last NPPES UpdateMarch 11, 2022
NPPES CertifiedMarch 11, 2022
✔ NPI 1023051851 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
800 PEAKWOOD DR STE 5E, Houston, TX 77090
Open in Google Maps ↗

Other Identifiers 1

Medicaid1216913-01TX

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Houston Northwest Radiology Assn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

30

Medicare enrollment records show 30 clinicians reassign Medicare billing to Houston Northwest Radiology Assn, which bills Medicare for the services they deliver. Of these, 18 practice at this address. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 2

Diagnostic Radiology27
Interventional Radiology3

Nearest to this location (20)

See all 30
Amir Anvari, M.D.
Diagnostic Radiology
NPI 1942734629
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Pauline Bui, D.O.
Diagnostic Radiology
NPI 1003128976
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Chandra Katragadda, MD
Diagnostic Radiology
NPI 1699764506
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Voon Liaw, M.D
Interventional Radiology
NPI 1740422369
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Chad Mackay
Diagnostic Radiology
NPI 1508252636
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Andrew Mai, M.D.
Diagnostic Radiology
NPI 1326433442
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Dan Nguyen, MD
Diagnostic Radiology
NPI 1366947509
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 206-9050
✔ PECOS✔ Accepts MedicareSame address
Nguyen Nguyen, M.D.
Diagnostic Radiology
NPI 1821397084
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Mudassir Shafi, M.D.
Diagnostic Radiology
NPI 1295793958
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Muzammil Shafi, M.D.
Diagnostic Radiology
NPI 1689705147
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-4158
✔ PECOS✔ Accepts MedicareSame address
Maryanne Tran, MD
Diagnostic Radiology
NPI 1205036225
800 PEAKWOOD DR STE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Jeffrey Zatorski, M.D.
Diagnostic Radiology
NPI 1770561185
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Ravi Bikkina, MD
Diagnostic Radiology
NPI 1477503365
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Hai Nguyen, M.D.
Diagnostic Radiology
NPI 1760460059
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Robert Scholl, M.D.
Diagnostic Radiology
NPI 1982682399
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Madelyn Vuong, M.D.
Diagnostic Radiology
NPI 1295713642
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Kee Wee, M.D.
Diagnostic Radiology
NPI 1992783336
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
David Olifant, M.D.
Diagnostic Radiology
NPI 1619955093
800 PEAKWOOD DR SUITE 5E
Houston, TX 77090
(281) 440-5158
✔ PECOS✔ Accepts MedicareSame address
Ibrahim Darwish
Diagnostic Radiology
NPI 1295293587
2190 NORTH LOOP W STE 250
Houston, TX 77018
(281) 440-5158
✔ PECOS✔ Accepts Medicare14 mi
Craig Cook, M.D.
Diagnostic Radiology
NPI 1184915282
9002 RANDY DR
Houston, TX 77055
(832) 373-7997
✔ PECOS✔ Accepts Medicare16 mi
See all 30 clinicians

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

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 Houston Northwest Radiology Assn's NPI number?

The NPI number for Houston Northwest Radiology Assn is 1023051851. It was assigned to this organization in the NPPES registry on June 13, 2006.

Where is Houston Northwest Radiology Assn located?

Houston Northwest Radiology Assn is located at 800 Peakwood Dr Ste 5E, Houston, TX 77090. The listed phone number is (281) 440-5158.

What is Houston Northwest Radiology Assn's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Houston Northwest Radiology Assn enrolled in Medicare?

Yes. Houston Northwest Radiology Assn is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Houston Northwest Radiology Assn?

According to the CMS Revalidation Reassignment List (October 2026 release), 30 clinicians in 2 Medicare specialties reassign their Medicare billing to Houston Northwest Radiology Assn. A 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 the clinician's services. The largest specialties are Diagnostic Radiology (27) and Interventional Radiology (3). Of these, 18 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Houston Northwest Radiology Assn accept?

Health plans from Blue Cross and Blue Shield of Texas and WellPoint list Houston Northwest Radiology Assn 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 Houston Northwest Radiology Assn was last updated on March 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.