Dr. Tan Nguyen, M.D.
Internal Medicine
61% Complete
Profile completeness
ZIP Healthcare Access Score
Limited Access
ZIP 91786 • D
20+
Years in Practice
Healthcare Access Where Dr. Tan Nguyen Practices
ZIP code 91786 • Upland, California
Significant gaps exist in healthcare availability for residents of ZIP 91786.
View full Healthcare Access Score report for ZIP 91786Conditions Dr. Tan Nguyen Can Help With
Based on specialty, these are the relevant healthcare access scores for the practice area
Practice Locations
2 locations
About Dr. Tan Nguyen
Tan Nguyen, M.D. is a healthcare provider practicing in Upland, CA.
Specialty Definition
Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers).
35
Years Experience
2
Locations
1
States Licensed
Credentials & Board Certifications
Additional Specialties
Primary Specialty
Internal MedicineCredentials verified via NPI Registry (NPPES)
Education & Training
Medical School
Other
Class of 1991
Licenses & Practice States
Licensed in 1 state
| State | License | Classification | Primary |
|---|---|---|---|
| California | A70331 | Dermatology | |
| California | A70331 | Dermatology | — |
Public Data Summary for Dr. Tan Nguyen
With 20 years of practice, Dr. Tan Nguyen is an established internal medicine provider, M.D., after earning their medical degree at Other in 1991. Dr. currently practices across 2 facilities, including in Upland, California. Their National Provider Identifier (NPI) is 1144273491, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.
Dr. Tan Nguyen's practice is located in ZIP 91786 (Upland, California), which has an overall CartoChrome Healthcare Access Score of 28/100 (Limited Access). Access constraints in this ZIP code can affect wait times, specialist availability, and emergency response — context worth knowing when choosing a provider.
CMS Medicare data shows Dr. Tan Nguyen as a lower-volume internal medicine provider, treating approximately 293 Medicare beneficiaries and delivering 20K services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.
Under the Physician Payments Sunshine Act, CMS reports that Dr. Tan Nguyen received $2K in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.
Transparency & Safety
Public records from CMS and OIG databases
Industry Payments
$2K
Total payments received from pharmaceutical and medical device companies in 2023.
Source: CMS Open Payments (Sunshine Act)
Opioid Prescribing
This provider has no opioid prescriptions on file in Medicare Part D data.
Insurance & Accessibility
Reviews
Community reviews for Dr. Tan Nguyen
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0 reviews
Internal Medicine Providers Nearby
Same primary specialty near ZIP 91786
FAQ
Frequently asked questions about Dr. Tan Nguyen
What does Dr. Tan Nguyen specialize in?
Dr. Tan Nguyen specializes in Internal Medicine. Secondary taxonomy filings also list Dermatology.
Where does Dr. Tan Nguyen practice?
Dr. Tan Nguyen practices at in Upland, California. Dr. is also affiliated with 1 additional facility, listed below.
Does Dr. Tan Nguyen accept Medicare?
Based on CMS records, Dr. Tan Nguyen has not filed a Medicare opt-out affidavit, which means they typically accept Medicare-covered patients. CMS billing data shows 293 Medicare beneficiaries treated in the most recent reporting year.
What is Dr. Tan Nguyen's NPI number?
Dr. Tan Nguyen's National Provider Identifier (NPI) is 1144273491. This is the unique 10-digit number the Centers for Medicare & Medicaid Services assigns to every practicing US healthcare provider. You can verify this number directly at the NPPES NPI Registry.
How long has Dr. Tan Nguyen been practicing?
Dr. Tan Nguyen has approximately 20 years of practice experience, having graduated from Other in 1991.