DR. MARCO ANTONIO ACOSTA JR. MD
NPI 1881383644
Hospitalist in San Antonio, TX

NPI Status: Active since May 05, 2023

Contact Information

4502 MEDICAL DR
SAN ANTONIO, TX
ZIP 78229
Phone: (210) 358-3555
Fax: (210) 702-4239

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
CLIA Information
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Hospitalist
CLIA Number: 45D1105619
CLIA Cert. Type: Ambulatory Surgery Center
CLIA Exp. Date: 09-24-2027

About MARCO ACOSTA

This page provides the complete NPI Profile along with additional information for Marco Acosta, a provider established in San Antonio, Texas with a medical specialization in Hospitalist. The healthcare provider is registered in the NPI registry with number 1881383644 assigned on May 2023. The practitioner's primary taxonomy code is 208M00000X with license number W4401 (TX). The provider is registered as an individual and his NPI record was last updated April 2026.

NPI: 1881383644
Provider Name: DR. MARCO ANTONIO ACOSTA JR. MD
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: 7703 FLOYD CURL DR SAN ANTONIO, TX 78229
Is Sole Proprietor?: No
Enumeration Date: 05-05-2023
Last Update Date: 04-08-2026
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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: Hospitalist
Taxonomy Code: 208M00000X
Type: Allopathic & Osteopathic Physicians
License No.: W4401
License State: TX
Taxonomy Description: Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	207R00000X	Allopathic & Osteopathic Physicians	Internal Medicine	W4401 (TX)

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number: 45D1105619
Facility Type: Ambulatory Surgery Center
Certificate Effective Date: September 25, 2025
Certificate Expiration Date: September 24, 2027
Laboratory Director: LEE A. CARLISLE
Certificate Type: Certificate of Waiver
Certificate Type Description: This CLIA certificate is issued to Marco Acosta to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

NPI 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 1881383644, we treat the final digit (4) 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

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 8 → 16 → 7 3 → 6 3 → 6 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 6 + 1 + 6 + 8 + 6 + 6 + 8 + 24 = 76

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

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1881383644.