Doctor Profile

Gastroenterology · Gastroenterology

Marlyn J. Mayo

MD · Gastroenterology · Baylor College Of Medicine
5939 HARRY HINES BLVD
Dallas, TX 75235
✓ Accepts Medicare 🎓 36+ Years Practicing
85
Medicare Patients / yr
4
Procedures Billed
36
Years Practicing
2
Hospital Affiliations
Data Source: Identity from NPPES (2026). Procedure & patient volume from CMS Medicare Provider Utilization & Payment Data (2023). Hospital affiliations from CMS Physician Compare. We display publicly reported data — no personal information required to view any of it.
Reviewed by: Wes Ward, Founder & Data Lead • View our methodology

Important: We are not affiliated with Medicare, CMS, or Marlyn J. Mayo's practice. This page displays publicly available CMS data to help you research Medicare providers. We do not sell insurance or represent any insurance company. For official enrollment and complete plan information, visit Medicare.gov or call 1-800-MEDICARE.

Medicare Plans That Cover Dr. Mayo

See which plans Dr. Mayo accepts

We're pulling plan acceptance data directly from insurance carrier provider directories. Until that feed is live for Texas, the fastest way to find a Medicare plan that covers Dr. Mayo is to compare every Medicare Advantage and Part D plan available near 75235, TX — the Gastroenterology's office can quickly confirm which of the top local plans they accept.

Compare Medicare Plans near 75235, TX →

Or call the office at (214) 645-8300 to confirm acceptance directly.

What Dr. Mayo Does

Dr. Mayo served 85 Medicare patients across 96 services in the latest CMS reporting year. That's 86% below the average Gastroenterology in Texas (597 patients across 962 doctors).

ProcedureServicesMedicare Patients
Established patient office or other outpatient visit, 30-39 minutes (99214)5848
Biopsy of large bowel using a flexible endoscope (45380)1413
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)1313
Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)1111

How to read this: "Services" are the total times Dr. Mayo billed Medicare for each procedure in the latest reporting year. "Patients" counts unique Medicare beneficiaries. Procedures are shown in plain English; the underlying HCPCS codes are available on request.

Hospital Affiliations

Dr. Mayo is affiliated with 2 hospitals according to CMS Physician Compare. Below are the 2 hospitals with full quality profiles on our site. Hospital network status depends on your Medicare Advantage plan — always verify before enrolling.

Parkland Health & Hospital System

Dallas, TX
★★☆☆☆ 2/5 CMS Rating

Practice Location & Telehealth Readiness

Dr. Mayo practices at the address below. If you're evaluating Medicare coverage, location matters for in-network access and — when Dr. Mayo offers telehealth — broadband availability at your home matters for virtual visits.

Address: 5939 HARRY HINES BLVD, Dallas, TX 75235
Phone: (214) 645-8300

Area Safety Grade

D+

Block-level crime analysis from CrimeGrade.org.

Practice Accessibility

25 min

Average commute time in this zip · 78% of residents drive to work. Practical context for patients deciding whether to make the trip. See the full neighborhood profile at BestNeighborhood.org.

Telehealth Readiness

85.6553

Households with fiber broadband — important for reliable virtual visits. Check your address at ISPReports.org.

Get directions on Google Maps →

Other Gastroenterology Doctors near 75235, TX

If Dr. Mayo isn't accepting new patients or isn't in your plan's network, these are the closest gastroenterology doctors near 75235, TX:

DoctorSpecialtyMedicare Patients / yrDistance
Jeffrey D. BrowningGastroenterology<1 mi
Christian A. Mayorga, Jr.Gastroenterology23<1 mi
Jay D. HortonGastroenterology<1 mi
Lisa C. CaseyGastroenterology29<1 mi
Amit SingalGastroenterology39<1 mi
Suraj J. PatelGastroenterology<1 mi

View all gastroenterology doctors near 75235, TX →

How to Use This Information

Choosing a Medicare plan that covers Dr. Mayo takes three steps:

Compare Medicare Plans near 75235, TX → All Doctors near 75235, TX

Marlyn J. Mayo: Common Questions

Does Dr. Mayo accept Medicare?
Yes. Dr. Mayo is enrolled with Medicare and listed in the CMS Provider Enrollment, Chain, and Ownership System (PECOS). Whether a specific Medicare Advantage plan covers Dr. Mayo depends on that plan's provider network. Compare Medicare plans near 75235, TX →
Where is Dr. Mayo's office?
Dr. Mayo practices at 5939 HARRY HINES BLVD, Dallas, TX 75235. Phone: (214) 645-8300.
What Medicare plans does Dr. Mayo accept?
Original Medicare (Parts A & B) is accepted. Medicare Advantage plan acceptance varies by carrier and plan year. Call the office at (214) 645-8300 to confirm your specific plan is accepted, or compare all Medicare plans near 75235, TX to see available options.
Does Dr. Mayo offer telehealth visits?
CMS does not currently list Dr. Mayo as offering telehealth. Call the office at (214) 645-8300 to confirm whether virtual visits are available.
How experienced is Dr. Mayo?
Dr. Mayo graduated in 1990 and has been practicing for approximately 36 years. In the latest CMS reporting year, Dr. Mayo treated 85 Medicare patients across 4 distinct procedure types.
How do I know if Dr. Mayo is in-network for my Medicare plan?
Network status varies by plan. The best verification steps: (1) check your plan's provider directory at the carrier's website, (2) call the office at (214) 645-8300 and ask which plans they currently accept, and (3) call the number on the back of your Medicare card. Print our doctor questions checklist →

About the Reviewer

Wes Ward

Wes Ward

Founder & Data Lead

Wes Ward reviews all doctor profiles and methodology for data accuracy. Every Medicare provider page on this site — including the utilization statistics, hospital affiliations, and geocoded practice address — goes through his data-validation pipeline before publication. We display only publicly available CMS data; you never need to enter personal information to see any of it.

With 25+ years in data analytics — including work with highly regulated genomic data at Ancestry.com — Wes brings enterprise-level rigor to healthcare transparency. He is also a co-founder of BestNeighborhood.org (neighborhood data), CrimeGrade.org (block-level safety analytics), and ISPReports.org (broadband availability for telehealth). Those sister sites power the location and telehealth-readiness context on this page.

View full profile →LinkedIn

Data sources: CMS NPPES (2026), CMS Medicare Provider Utilization & Payment Data (2023), CMS Physician Compare, CrimeGrade.org, BestNeighborhood.org, ISPReports.org. This page is for informational purposes only. Always verify coverage directly with the plan and practice. Read our full methodology →Privacy policy

Medicare Resources

Choosing the right Medicare plan involves more than just doctor coverage. These guides help you evaluate the full picture:

Medicare Plans for Conditions Treated by Gastroenterology Specialists

See which Medicare plans score highest for conditions commonly managed by this specialty in 75235, TX:

Does your Medicare plan cover Dr. Mayo?

Compare Plans near 75235, TX →