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Profile last updated: March 2026How we source this data
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Provider Profile

Theresa Thanh Nguyen, M.D.

Internal Medicine Physician

NPI: 1003893801

5

3 · Healthgrades

5

3 · Sharecare

20

Years Exp.

Westminster

CA

Internal Medicine

Specialty

About

With a perfect patient rating of 5.0 out of 5 based on multiple reviews, Dr. Nguyen is praised for her friendly demeanor and approachable nature, which contributes to a comfortable patient experience. Many patients express confidence in her medical decisions, highlighting her commitment to patient-centered care. Dr. Nguyen has years of experience in the field of internal medicine, and typical office visit costs range from $80 to $250.

Practicing Since

Dec 2005

Gender

Female

Experience

20 years

CA Medical License

#A61129

Practice Type

Group Practice

NPI Number

1003893801
Avg. Self-Pay Rate

$80

Low

$85

Median

$250

High

A typical office visit with a internal medicine physician in CA costs between $80 and $250, with a median of $85. These figures are based on negotiated office visit rates (CPT 99213–99215) disclosed under the Transparency in Coverage Act.

Actual office visit costs for Dr. Theresa Thanh Nguyen, MD may vary depending on visit complexity, your insurance plan, and coverage details. Contact the provider's office for exact pricing.

Cost data sourced from insurer Transparency in Coverage Act filings. Costs shown are negotiated rates and may not reflect your actual out-of-pocket cost. Learn about our data

Local Market

Westminster Low

$88

Westminster Typical

$137

Westminster High

$203

In Westminster, a typical internal medicine physician visit costs $137, ranging from $88 to $203. This is 62% above the California state median of $85. Based on 5 providers with published pricing data.

Across California, a internal medicine physician visit ranges from $80 to $250 with a median of $85. This is 7% below the national median of $91. Based on 2,792 providers with published pricing data.

There are 25 internal medicine physicians in Westminster and 5,319 across California on our platform.

Individual negotiated rates for this provider are not yet available.

See full internal medicine physician cost breakdown in California
Patient Reviews

5

3 reviews

Sharecare

Overall, patient sentiment towards Dr. Theresa Thanh Nguyen, MD, is very positive, with an average rating of 5.0 out of 5 based on multiple reviews. Patients frequently commend her for her thoroughness during examinations, her ability to explain medical conditions clearly, and her friendly demeanor. Many patients express a strong sense of trust in her medical decisions and appreciate her approachable nature, which contributes to a comfortable patient experience. Common themes in praise include Dr. Nguyen's excellent bedside manner, with patients noting her friendliness and caring attitude. The low wait times, often reported to be under 10 minutes, and the ease of scheduling appointments are also highlighted positively. Additionally, patients appreciate the clarity of her instructions regarding their health conditions, which enhances their understanding and compliance with treatment plans. On the criticism side, there are no significant negative comments noted in the reviews, suggesting a consistently high level of patient satisfaction. Notable specifics mentioned repeatedly include her long-standing practice in the area, her ability to communicate effectively with patients, and the supportive staff at her office. Overall, Dr. Nguyen appears to be a highly recommended choice for individuals seeking an internist in Westminster, California.

Location

Address

15576 BROOKHURST ST STE B

Westminster, CA 92683

Phone

7147758090
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Momentary Lab sources provider data from the CMS NPI Registry and cost data from federal Transparency in Coverage files. Reviews aggregated from Healthgrades, Vitals, WebMD, and other public sources. Learn how we verify and update healthcare information.

This page is for informational purposes only and does not constitute medical advice. Cost estimates are based on publicly available negotiated rate data and may not reflect your actual out-of-pocket cost. Always consult with your healthcare provider and insurance company for accurate cost information and medical decisions.