Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Megan McCain Maddox, MD

Individual provider Internal Medicine Physician · NPI 1720422884

Dr. Megan McCain Maddox, MD practises Internal Medicine in Houston, Texas. Graduated from Louisiana State University School of Medicine in Shreveport in 2013, 13 years ago. Practices with Tmh Physician Associates PLLC, a 1,899-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
13
Trained at
Louisiana State University School of Medicine in Shreveport
Licensed in
TX
In the registry since
2013
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

4191 Bellaire Blvd Ste 250
Houston, TX 77025-1017
Phone: (346) 356-7000
Fax: (346) 356-7001
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence Q9190 (TX)

Record details

NPI number1720422884
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 19, 2013
Last updated in NPPESApril 1, 2024
Certification dateApril 1, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolLOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN SHREVEPORT
Graduated 2013 (13 years in practice)
Group practice Tmh Physician Associates Pllc — 1899 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations7 on file with Medicare

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 patients250
Services billed 2,700 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 $2,742 162 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.

  • Houston Methodist Hospital Hospital · Houston, TX · listed as The Methodist Hospital, Houston
  • Houston Methodist Sugarland Hospital Hospital · Sugar Land, TX · listed as Houston Methodist Hospital Sugar Land
  • Houston Methodist Baytown Hospital Hospital · Baytown, TX
  • Houston Methodist The Woodlands Hospital Hospital · The Woodlands, TX
  • Houston Methodist West Hospital Hospital · Houston, TX
  • Enhabit Home Health Home health agency · Houston, TX

Colleagues at Tmh Physician Associates PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1899 clinicians in the practice; 12 are shown here.

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