Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

DR. DENNIS TAM NGUYEN DDS
NPI 1700703527
Dentist in San Antonio, TX

Q: What is Dennis Nguyen's NPI number?

The NPI number for Dennis Nguyen is 1700703527. It was assigned to this individual provider in the NPPES registry on July 2, 2026.

Q: What is Dennis Nguyen's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: When was this NPI record last updated?

The NPPES record for Dennis Nguyen was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.

Active since July 02, 2026PECOS Enrolled

5439 RAY ELLISON BLVD, SAN ANTONIO, TX 78242(210) 922-7000(210) 924-1374 Get Directions Write a Review

NPPES record added: July 17, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

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About Dr. Dennis Tam Nguyen Dds NPPES

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

DR. DENNIS TAM NGUYEN DDS (NPI 1700703527) is an individual dentist in San Antonio, Texas, licensed in Texas (42607) and active in the NPI registry since July 2026. He is enrolled in Medicare PECOS and maintains 5 additional practice locations.

NPPES Registry Identity

NPI1700703527

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameDR. DENNIS TAM NGUYENCredential: DDS

Location Address5439 RAY ELLISON BLVDSan Antonio, TX 78242-2219

Mailing Address3750 Commercial AveSan Antonio, TX 78221-3117 · (210) 922-7000 · Fax (210) 924-1374

Phone(210) 922-7000

Fax(210) 924-1374

Sole ProprietorNo

Enumeration DateJuly 2, 2026

Last NPPES UpdateJuly 17, 2026

NPPES CertifiedJuly 17, 2026

✔ NPI 1700703527 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in TX · 42607

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

Also ListedDentist · General PracticeTaxonomy 1223G0001X · License 42607 (TX)

5439 RAY ELLISON BLVD, San Antonio, TX 78242

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Secondary Practice Locations 5

Location 19011 Poteet Jourdanton FwySan Antonio, TX 78224-2124 · Phone (210) 922-7000

Location 25542 Walzem RdWindcrest, TX 78218-2103 · Phone (210) 922-7000 · Fax (210) 924-1374

Location 33750 Commercial AveSan Antonio, TX 78221-3117 · Phone (210) 922-7000

Location 4910 Wagner AveSan Antonio, TX 78211-3213 · Phone (210) 922-7000 · Fax (210) 924-1374

Location 54300 Thousand Oaks Dr Ste 103&104San Antonio, TX 78217-2152 · Phone (210) 922-7000 · Fax (210) 924-1374

Other Identifiers 1

Other42607TX · State Dental License Number

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Dennis Tam Nguyen Dds 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78242 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

$84.92 typical visit price

range $54.84 – $166.88

Typical copayment $21.23 (range $13.71 – $41.72)

Most-billed visit code 99203

Established Patient

$68.55 typical visit price

range $17.52 – $136.11

Typical copayment $17.13 (range $4.38 – $34.02)

Most-billed visit code 99213

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 14

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

STEPHANIE ANNE AVILES CPNP-PC

Nurse Practitioner (Pediatrics)