Active NPI
Diabetes & Endocrinology Clinic of South Texas PLLC
- Endocrinology, Diabetes & Metabolism Physician
- Harlingen, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Endocrinology, Diabetes & Metabolism Physician
- Legal business name
- DIABETES & ENDOCRINOLOGY CLINIC OF SOUTH TEXAS PLLC
- Practice address
- 620 N Ed Carey Dr
Harlingen, TX 78550-7912 - Phone
- (956) 230-4971
- Fax
- (956) 230-4972
- NPI assigned
- Sep 5, 2020
- Last updated
- Jul 16, 2025
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Syed Azhar Hassan, MD
- Title
- President
- Phone
- (956) 230-4971
Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Endocrinology, Diabetes & Metabolism Physician | 207RE0101X | NU | Primary |
Addresses
Primary practice location
620 N Ed Carey Dr
Harlingen, TX 78550-7912
Mailing address
3212 S Sugar Rd
Edinburg, TX 78539-3693
Phone (956) 230-4971
Other practice location 1
56 E Price Rd
Brownsville, TX 78521-3508
Phone (956) 230-4971
Other practice location 2
3761 E Ruben M Torres Blvd
Brownsville, TX 78526-0093
Phone (956) 230-4971
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in TX
Enrollment records 1
Laboratory certificates & supplier records
Derived by NPIMapThese CMS records do not include an NPI. They are shown because their name and street address match this provider’s.
CLIA laboratory certificates
| CLIA number | Laboratory | Certificate | Expires |
|---|---|---|---|
| 45D2207120 | Diabetes & Endocrinology Clinic of South Texas PLL | Certificate of waiver | Dec 22, 2026 |
National Provider Directory
National Provider DirectoryLocations
3761 Ruben Torres SR Blvd
Brownsville, TX 78526
Phone (956) 230-4971
620 N Ed Carey Dr
Harlingen, TX 78550
Phone (956) 230-4971
620 N Ed Carey Dr
Ste A
Harlingen, TX 78550
Practitioners & affiliated clinicians
Practitioners 4
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.
-
- Endocrinology, Diabetes & Metabolism Physician
- Harlingen, TX
- NPI 1043659345
-
- Family Nurse Practitioner
- Harlingen, TX
- NPI 1407652498
Endocrinology, Diabetes & Metabolism
-
- Allergy Physician
- Brownsville, TX
- NPI 1235204082
-
- Family Nurse Practitioner
- Brownsville, TX
- NPI 1528432267
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1599264000000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1752624000000",
"number": "1770197816",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3212 S SUGAR RD",
"city": "EDINBURG",
"state": "TX",
"postal_code": "785393693",
"telephone_number": "956-230-4971",
"fax_number": "956-230-4972"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "620 N ED CAREY DR",
"city": "HARLINGEN",
"state": "TX",
"postal_code": "785507912",
"telephone_number": "956-230-4971",
"fax_number": "956-230-4972"
}
],
"practiceLocations": [
{
"address_1": "56 E Price Rd",
"address_purpose": "LOCATION",
"city": "Brownsville",
"state": "TX",
"postal_code": "785213508",
"country_code": "US",
"telephone_number": "956-230-4971",
"fax_number": "956-230-4972",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "3761 E Ruben M Torres Blvd",
"address_purpose": "LOCATION",
"city": "Brownsville",
"state": "TX",
"postal_code": "785260093",
"country_code": "US",
"telephone_number": "956-230-4971",
"fax_number": "956-280-5554",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"organization_name": "DIABETES & ENDOCRINOLOGY CLINIC OF SOUTH TEXAS PLLC",
"organizational_subpart": "NO",
"enumeration_date": "2020-09-05",
"last_updated": "2025-07-16",
"certification_date": "2025-07-16",
"status": "A",
"authorized_official_last_name": "HASSAN",
"authorized_official_first_name": "SYED",
"authorized_official_middle_name": "AZHAR",
"authorized_official_title_or_position": "PRESIDENT",
"authorized_official_telephone_number": "956-230-4971",
"authorized_official_credential": "MD"
},
"taxonomies": [
{
"code": "207RE0101X",
"taxonomy_group": "",
"desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
"state": "NU",
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Harlingen, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.