DR. STEPHEN JAMES SIEDOW D.D.S.
NPI 1902218845
Dentist - Pediatric Dentistry in Rio Grande City, TX

Q: What is Stephen Siedow's NPI number?

The NPI number for Stephen Siedow is 1902218845. It was assigned to this individual provider in the NPPES registry on May 27, 2014.

Q: What is Stephen Siedow's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Pediatric Dentistry, with taxonomy code 1223P0221X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Siedow was last updated on February 16, 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.

Active since May 27, 2014

5342 E US HIGHWAY 83 STE 5, RIO GRANDE CITY, TX 78582(956) 414-7878 Get Directions Write a Review

NPPES record last updated: February 16, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Stephen James Siedow D.d.s. NPPES

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

DR. STEPHEN JAMES SIEDOW D.D.S. (NPI 1902218845) is an individual pediatric dentistry provider in Rio Grande City, Texas, licensed in Texas (30645) and active in the NPI registry since May 2014. He maintains a secondary practice location in Brownsville.

NPPES Registry Identity

NPI1902218845

Entity TypeIndividualMale

Primary Taxonomy1223P0221X

Provider Legal NameDR. STEPHEN JAMES SIEDOWCredential: D.D.S.

Location Address5342 E US HIGHWAY 83 STE 5Rio Grande City, TX 78582-9433

Mailing Address5300 N G St Ste 130Mcallen, TX 78504-6550 · (956) 414-7878

Phone(956) 414-7878

Sole ProprietorYes

Enumeration DateMay 27, 2014

Last NPPES UpdateFebruary 16, 2026

NPPES CertifiedFebruary 16, 2026

✔ NPI 1902218845 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Pediatric DentistryDental Providers

Taxonomy Code1223P0221X

License✔ Licensed in TX · 30645

Definition

An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs.

5342 E US HIGHWAY 83 STE 5, Rio Grande City, TX 78582

Open in Google Maps ↗

Secondary Practice Location 1

Location 14750 N Expressway # 77Brownsville, TX 78526-4120 · Phone (956) 414-7878

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Alabama and more.Insurance ›

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 Stephen Siedow's NPI number?

The NPI number for Stephen Siedow is 1902218845. It was assigned to this individual provider in the NPPES registry on May 27, 2014.

Where is Stephen Siedow located?

Stephen Siedow practices at 5342 E Us Highway 83 Ste 5, Rio Grande City, TX 78582. The listed phone number is (956) 414-7878.

What is Stephen Siedow's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Pediatric Dentistry, with taxonomy code 1223P0221X.

What insurance does Stephen Siedow accept?

Health plans from Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Alabama, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 13 other insurers list Stephen Siedow as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Stephen Siedow was last updated on February 16, 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.