Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

STEVEN HLOZEK
NPI 1861180788
Internal Medicine in San Antonio, TX

Active since April 27, 2023
4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-3555(210) 702-4239 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Male
  • Internal Medicine

About STEVEN HLOZEK

This page provides the complete NPI Profile along with additional information for Steven Hlozek, an internist established in San Antonio, Texas with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1861180788 assigned on April 2023. The practitioner's primary taxonomy code is 207R00000X with license number W4839 (TX). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1861180788
Provider Name
STEVEN HLOZEK
Gender
Male
Entity Type
Individual
Location Address
4502 MEDICAL DR SAN ANTONIO, TX 78229
Location Phone
(210) 358-3555
Location Fax
(210) 702-4239
Mailing Address
11511 SHADOW CREEK PKWY PEARLAND, TX 77584
Mailing Phone
(713) 442-0000
Is Sole Proprietor?
No
Enumeration Date
04-27-2023
Last Update Date
07-17-2026
Code Navigator

An internist like Steven Hlozek is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Secondary Locations

  • 3915 Kians Way
    Richmond, TX 77469
    (346) 674-1200

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
W4839
License State
TX
Taxonomy Description
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.

Reviews for STEVEN HLOZEK

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1861180788, we treat the final digit (8) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
1
Unchanged
Pos 5
1
Doubled → 2
Pos 6
8
Unchanged
Pos 7
0
Doubled → 0
Pos 8
7
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
8
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 6 → 12 → 3 1 → 2 0 → 0 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 1 + 2 + 1 + 2 + 8 + 0 + 7 + 1 + 6 + 24 = 62

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1861180788.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Transplant Surgery
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pathology (Anatomic Pathology & Clinical Pathology)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Emergency Medicine
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Physician Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Physical Medicine & Rehabilitation
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Anesthesiology
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Emergency Medicine
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Physician Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Anesthesiology
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Hospitalist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Advanced Practice Midwife
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pathology (Anatomic Pathology)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pediatrics
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Internal Medicine (Nephrology)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pathology (Anatomic Pathology & Clinical Pathology)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Anesthesiology
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Practitioner (Pediatrics)
4502 MEDICAL DR
SAN ANTONIO, TX 78229

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861180788, enumerated as an "individual" on April 27, 2023.

The provider is located at 4502 MEDICAL DR SAN ANTONIO, TX 78229 and the phone number is (210) 358-3555.

Internal Medicine with taxonomy code 207R00000X.