DR. ALEXANDER PAIVA D.O.
NPI 1104131846
Internal Medicine in San Antonio, TX
NPI Status: Active since August 17, 2010
Contact Information
1715 MCCULLOUGH AVE
SAN ANTONIO, TX
ZIP 78212
Phone: (210) 225-5323
Fax: (210) 225-7505
- Individual
- Male
- Internal Medicine
- CLIA Number: 45D2089441
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 12-29-2026
About ALEXANDER PAIVA
This page provides the complete NPI Profile along with additional information for Alexander Paiva, 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 1104131846 assigned on August 2010. The practitioner's primary taxonomy code is 207R00000X with license number V4165 (TX). The provider is registered as an individual and his NPI record was last updated July 2025.
- NPI
- 1104131846
- Provider Name
- DR. ALEXANDER PAIVA D.O.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212
- Location Phone
- (210) 225-5323
- Location Fax
- (210) 225-7505
- Mailing Address
- 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212
- Mailing Phone
- (210) 225-5323
- Mailing Fax
- (210) 225-7505
- Is Sole Proprietor?
- No
- Enumeration Date
- 08-17-2010
- Last Update Date
- 07-23-2025
- Code Navigator
An internist like Alexander Paiva 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
- 4502 Medical Dr
San Antonio, TX 78229
(210) 358-4000 - 4301 Broadway # Cpo121
San Antonio, TX 78209
(210) 283-6438 - 7400 Merton Minter St Bldg 1
San Antonio, TX 78229
(210) 617-5300
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.
- V4165
- 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.
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
- 45D2089441
- Facility Type
- Physician Office
- Certificate Effective Date
- December 30, 2024
- Certificate Expiration Date
- December 29, 2026
- Laboratory Director
- ALEXANDER S. ROKA
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to Alexander Paiva 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.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 1 | 0 | 4 | 1 | 3 | 1 | 8 | 4 | 6 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 1 | 0 | 4 | 2 | 3 | 2 | 8 | 8 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 1 + 0 + 4 + 2 + 3 + 2 + 8 + 8 + 24 = 54 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 54 = 6 | 6 | ||||||||
The NPI number 1104131846 is valid because the calculated check digit 6 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 13 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1124025838 | RAMON LUIS FIGUEROA MD Individual | Family Medicine | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1639348048 | AARON ALAN ANGUIANO M.D. Individual | Family Medicine | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1104822683 | CARMINA M FUSCO DPM Individual | Podiatrist (Foot Surgery) | 1715 MCCULLOUGH AVE 2ND FLOOR SAN ANTONIO, TX 78212 (210) 732-3668 |
| 1144281478 | DR. JAIME MORENO MD Individual | Internal Medicine | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1457789935 | CARVAJALS INC Organization | Pharmacy (Community/Retail Pharmacy) | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 977-1870 |
| 1073585188 | DR. WESLEY ALLEN CLARKSON D.O. Individual | Internal Medicine (Cardiovascular Disease) | 1715 MCCULLOUGH AVE FL 2 SAN ANTONIO, TX 78212 (210) 408-1613 |
| 1558903583 | SANDRA LYNN RYAN RN Individual | Nurse Practitioner (Family) | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1164982450 | ALEKSANDRA DUKHAN Individual | Family Medicine | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1215557160 | RACHEL PAIGE WALKER MD Individual | Family Medicine | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1295980274 | LISA MARIE LEFFLER MD Individual | Hospitalist | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1821044751 | ROSEMARY ROMO RIVAS NP Individual | Nurse Practitioner (Family) | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1083087399 | MRS. JANICE WENGYE LEUNG DNP Individual | Nurse Practitioner (Gerontology) | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
| 1801160692 | MISS PAREE LAVONNE GALLO PA Individual | Physician Assistant | 1715 MCCULLOUGH AVE SAN ANTONIO, TX 78212 (210) 225-5323 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1104131846, enumerated in the NPI registry as an "individual" on August 17, 2010
The provider is located at 1715 Mccullough Ave San Antonio, Tx 78212 and the phone number is (210) 225-5323
The provider's speciality is Internal Medicine with taxonomy code 207R00000X
The provider's CLIA number is 45D2089441 for a "physician office" facility with a CLIA Certificate of Waiver. This CLIA certificate is issued 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..
This NPI record was last updated on August 17, 2010. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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