Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Alejandro Hernandez Hernandez, MD

Individual provider Undersea and Hyperbaric Medicine (Emergency Medicine) Physician · NPI 1871908178

Alejandro Hernandez Hernandez, MD is registered under Family Practice in Mercedes, Texas. Qualified in 2000, 26 years ago. Practices with South Texas Clinicians Association PLLC, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
26
Licensed in
TX
In the registry since
2014
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2810 W Expressway 83
Mercedes, TX 78570-9704
Phone: (956) 734-9067
Fax: (956) 734-9068
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician (primary) Taxonomy 2083P0011X · Licence R0246 (TX)
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician Taxonomy 207PE0005X · Licence R0246 (TX)
Family Medicine Physician Taxonomy 207Q00000X · Licence BP10051015 (TX)
Family Medicine Physician Taxonomy 207Q00000X · Licence R0246 (TX)

Record details

NPI number1871908178
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 25, 2014
Last updated in NPPESJuly 6, 2024
Certification dateJune 18, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice South Texas Clinicians Association Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of tissue 97 times · 85th percentile
Removal of skin lesions 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients530
Services billed 3,343 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $482 13 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at South Texas Clinicians Association PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.