Harinder Singh, MD
Harinder Singh, MD is a Pediatric Cardiology Physician in San Antonio, TX, registered under NPI 1073556288.
Getting there
The practice address on file is 255 E SONTERRA BLVD STE 206, San Antonio, TX 78258. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| Q3442 | TX | Pediatric Cardiology Physician primary |
This provider holds licence Q3442 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Pediatric Medicine
- PAC ID
- 8426065079
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Texas | I20150303002354 | Practitioner - Pediatric Medicine |
| Ohio | I20230515001248 | Practitioner - Pediatric Medicine |
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. There are 2 separate enrolment records across 2 states (TX, OH). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatric Cardiology covers
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease. NUCC Health Care Provider Taxonomy, code 2080P0202X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1073556288 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 14, 2006 |
| Last updated | Feb 20, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
255 E SONTERRA BLVD STE 206 San Antonio, TX 78258 (210) 963-5657 Fax (210) 245-8162 |
| Mailing address |
5837 DE ZAVALA RD, PO BOX 690590 San Antonio, TX 78269 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 7 | 3 | 5 | 5 | 6 | 2 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 5 | 3 | 1 | 5 | 3 | 2 | 7 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.