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HA THI-BICH NGUYEN D.O.
NPI 1174531560
Internal Medicine in Houston, TX

Active since August 03, 2006PECOS Enrolled
4500 WASHINGTON AVE, SUITE 300, HOUSTON, TX 77007(713) 861-6490 Get Directions Write a Review

NPPES record last updated: March 24, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 24, 2021, Jun 27, 2016 (2 updates tracked since 2016).

About Ha Thi-bich Nguyen D.o. NPPES

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

HA THI-BICH NGUYEN D.O. (NPI 1174531560) is an individual internal medicine provider in Houston, Texas, licensed in Texas (K3929) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1174531560
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameHA THI-BICH NGUYENCredential: D.O.
Location Address4500 WASHINGTON AVE, SUITE 300Houston, TX 77007-5476
Mailing Address909 Frostwood Dr, Suite 1.100Houston, TX 77024-2301 · (713) 338-5519
Phone(713) 861-6490
Sole ProprietorNo
Enumeration DateAugust 3, 2006
Last NPPES UpdateMarch 24, 20212 updates tracked since enumeration
NPPES CertifiedMarch 24, 2021
✔ NPI 1174531560 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in TX · K3929✔ Licensed in CA · 20A 9444
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4500 WASHINGTON AVE, Houston, TX 77007
Open in Google Maps ↗

Other Identifiers 1

Medicaid045397902TX

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ha Thi-bich Nguyen D.o. 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 Reassignments

2

Medicare enrollment records show Ha Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Memorial Hermann Medical Group
29 mi
Family Medicine
6631 W CROSS CREEK BEND LN STE 200
Fulshear, TX 77441
  • Reassigned Medicare billing, Texas enrollment
  • 1,235 clinicians in this Medicare group
NPI 1003985102 (832) 658-5750
Doctors Express Of The Beaumont Area PA
78 mi
Urgent Care
3195 DOWLEN RD STE 105
Beaumont, TX 77706
  • Reassigned Medicare billing, Texas enrollment
  • 351 clinicians in this Medicare group
NPI 1841525235 (409) 860-1888

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77007 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.

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.

DESIGN DENTAL GROUP
Clinic/Center (Dental)
4500 WASHINGTON AVE, SUITE 700
HOUSTON, TX 77007
Harris County (713) 869-0334
CANDICE WINFUL M.D.
Family Medicine
4500 WASHINGTON AVE, SUITE 300
HOUSTON, TX 77007
Harris County (713) 861-6490
DR. LADAN POURMASIHA D.O.
Family Medicine
4500 WASHINGTON AVE, SUITE 300
HOUSTON, TX 77007
Harris County (713) 861-6490
STEVE ALAN WATTS M.D.
Family Medicine (Sports Medicine)
4500 WASHINGTON AVE, SUITE 300
HOUSTON, TX 77007
Harris County (713) 861-6490

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 Ha Nguyen's NPI number?

The NPI number for Ha Nguyen is 1174531560. It was assigned to this individual provider in the NPPES registry on August 3, 2006.

Where is Ha Nguyen located?

Ha Nguyen practices at 4500 Washington Ave Suite 300, Houston, TX 77007. The listed phone number is (713) 861-6490.

What is Ha Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ha Nguyen enrolled in Medicare?

Yes. Ha Nguyen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ha Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ha Nguyen reassigns Medicare benefits to 2 organizations: Memorial Hermann Medical Group (Fulshear, TX) and Doctors Express Of The Beaumont Area PA (Beaumont, TX). Each 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 Ha Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ha Nguyen was last updated on March 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.