Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Diana Maria Mercado-Marmarosh, MD

Individual provider Family Medicine Physician · NPI 1619298643

Diana Maria Mercado-Marmarosh, MD is registered under Family Practice in Edna, Texas. Graduated from University of Texas Medical School at Houston in 2010, 16 years ago. Practices with Jackson County Hospital District, a 20-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
16
Trained at
University of Texas Medical School at Houston
Licensed in
TX
In the registry since
2010
Specialties on file
2
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

1013A S Wells St
Edna, TX 77957-4045
Phone: (361) 782-7820
Fax: (361) 782-5627
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 927 Shaw Ave, Pasadena, TX 77506-1430 — (713) 982-5900

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence P8390 (TX)
Family Medicine Physician Taxonomy 207Q00000X · Licence BP10036757 (TX)

Record details

NPI number1619298643
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 14, 2010
Last updated in NPPESNovember 5, 2019

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 2010 (16 years in practice)
Group practice Jackson County Hospital District — 20 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients18
Services billed 167 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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 $387 20 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.

  • Citizens Medical Center Hospital · Victoria, TX · listed as Citizens Medical Center County of Victoria
  • Jackson County Home Health Home health agency · Edna, TX · listed as Jackson County Health Department
  • Jackson Healthcare Center Hospital · Edna, TX

Also affiliated with 1 nursing home, which CMS identifies by certification number only.

Colleagues at Jackson County Hospital District

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 20 clinicians in the practice; 12 are shown here.

Other providers in Edna