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

Michael Thomas Merrick, MD

Individual provider Orthopaedic Surgery Physician · NPI 1558590976

Michael Thomas Merrick, MD practises Orthopedic Surgery in Tyler, Texas. Graduated from University of Texas Medical School at Houston in 2009, 17 years ago. Practices with Ortholonestar PLLC, a 415-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
17
Trained at
University of Texas Medical School at Houston
Licensed in
TX
In the registry since
2009
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

3414 Golden Rd
Tyler, TX 75701-8336
Phone: (903) 939-7500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1123 S Palestine St Ste 100, Athens, TX 75751-3645 — (903) 939-7500
  • 925 W Loop 281, Longview, TX 75604-2918 — (903) 939-7500
  • 2211 S Loop 256, Palestine, TX 75801-4701 — (903) 939-7501

Specialties & licences

Orthopaedic Surgery of the Spine Physician (primary) Taxonomy 207XS0117X · Licence Q2803 (TX)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence Q2803 (TX)

Record details

NPI number1558590976
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 7, 2009
Last updated in NPPESApril 22, 2025
Certification dateApril 22, 2025

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 2009 (17 years in practice)
Group practice Ortholonestar Pllc — 415 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Laminectomy or laminotomy (partial removal of spine bones) 274 times · 99th percentile
Spinal fusion 662 times · 99th percentile

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 patients517
Services billed 2,998 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 $141 1 payment · 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.

  • Christus Good Shepherd Medical Center Hospital · Longview, TX
  • Christus Mother Frances Hospital Hospital · Tyler, TX · listed as Mother Frances Hospital
  • Baylor Scott & White Texas Spine & Joint Hospital Hospital · Tyler, TX
  • Ut Health East Texas Tyler Regional Hospital Hospital · Tyler, TX
  • Enhabit Home Health Home health agency · Allen, TX
  • Enhabit Home Health Home health agency · Tyler, TX
  • Enhabit Home Health Home health agency · Palestine, TX
  • Enhabit Home Health Home health agency · Longview, TX
  • Enhabit Home Health Home health agency · Nacogdoches, TX

Also affiliated with 1 inpatient rehabilitation facility, which CMS identifies by certification number only.

Colleagues at Ortholonestar PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 415 clinicians in the practice; 12 are shown here.

Other providers in Tyler