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DR. AN THIEN TANG M.D.
NPI 1841357589
Internal Medicine in Houston, TX

Active since January 02, 2007PECOS EnrolledAccepts Medicare Assignment
11978 WESTHEIMER RD STE B, HOUSTON, TX 77077(832) 406-4160(855) 540-2516 Get Directions Write a Review

NPPES record last updated: March 5, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 5, 2026, Dec 2, 2021, Oct 2, 2020 (3 updates tracked since 2020).

About Dr. An Thien Tang M.d. NPPES

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

DR. AN THIEN TANG M.D. (NPI 1841357589) is an individual internal medicine provider in Houston, Texas, licensed in Texas (M5537) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Baylor College Of Medicine (2003).

NPPES Registry Identity

NPI1841357589
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. AN THIEN TANGCredential: M.D.
Location Address11978 WESTHEIMER RD STE BHouston, TX 77077-6669
Mailing Address4700 Millenia Blvd Ste 650Orlando, FL 32839-6013 · (407) 533-6836 · Fax (407) 232-9316
Phone(832) 406-4160
Fax(855) 540-2516
Sole ProprietorNo
Medical School CMSBaylor College Of MedicineGraduated 2003
Enumeration DateJanuary 2, 2007
Last NPPES UpdateMarch 5, 20263 updates tracked since enumeration
NPPES CertifiedMarch 5, 2026
✔ NPI 1841357589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · M5537
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.
11978 WESTHEIMER RD STE B, Houston, TX 77077
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Other Names 1

Other Name (5)Andrew Tang

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. An Thien Tang M.d. 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 ID4183703341
PECOS Enrollment IDI20080430000174
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 77077 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 2

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

CENTERWELL SENIOR PRIMARY CARE (TX) PA
Internal Medicine
11978 WESTHEIMER RD STE B
HOUSTON, TX 77077
Harris County (346) 275-6750
DR. UCHEOMA D NWAOGWUGWU MD
Internal Medicine
11978 WESTHEIMER RD STE B
HOUSTON, TX 77077
Harris County (346) 275-6750

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 An Tang's NPI number?

The NPI number for An Tang is 1841357589. It was assigned to this individual provider in the NPPES registry on January 2, 2007. The provider is also known as Andrew Tang.

Where is An Tang located?

An Tang practices at 11978 Westheimer Rd Ste B, Houston, TX 77077. The listed phone number is (832) 406-4160.

What is An Tang's specialty?

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

Is An Tang enrolled in Medicare?

Yes. An Tang 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.

When was this NPI record last updated?

The NPPES record for An Tang was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.