Doctor Profile

Primary Care · Family Practice

Robert D. Johnston

MD · Family Practice · Texas A & M University System, Hsc, College Of Medicine
11006 SPENCER HWY
La Porte, TX 77571
✓ Accepts Medicare 🎓 39+ Years Practicing
759
Medicare Patients / yr
20
Procedures Billed
39
Years Practicing
3
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 Robert D. Johnston'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. Johnston

See which plans Dr. Johnston 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. Johnston is to compare every Medicare Advantage and Part D plan available near 77571, TX — the Family Practice's office can quickly confirm which of the top local plans they accept.

Compare Medicare Plans near 77571, TX →

Or call the office at (281) 470-2100 to confirm acceptance directly.

What Dr. Johnston Does

Dr. Johnston served 759 Medicare patients across 1,238 services in the latest CMS reporting year. That's 23% above the average Family Practice in Texas (616 patients across 5,371 doctors).

ProcedureServicesMedicare Patients
Established patient office or other outpatient visit, 20-29 minutes (99213)387154
Established patient office or other outpatient visit, 30-39 minutes (99214)10674
Injection of drug or substance under skin or into muscle (96372)9644
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)7516
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)7474

How to read this: "Services" are the total times Dr. Johnston 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. Johnston is affiliated with 3 hospitals according to CMS Physician Compare. Below are the 3 hospitals with full quality profiles on our site. Hospital network status depends on your Medicare Advantage plan — always verify before enrolling.

Houston Methodist Baytown Hospital

Baytown, TX
★★★★★ 5/5 CMS Rating

Houston Methodist Clear Lake Hospital

Nassau Bay, TX
★★★★★ 5/5 CMS Rating

Hca Houston Healthcare Clear Lake

Webster, TX
★★★☆☆ 3/5 CMS Rating

Practice Location & Telehealth Readiness

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

Address: 11006 SPENCER HWY, La Porte, TX 77571
Phone: (281) 470-2100

Area Safety Grade

D+

Block-level crime analysis from CrimeGrade.org.

Practice Accessibility

31 min

Average commute time in this zip · 90% 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

85.3234

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

Get directions on Google Maps →

Other Primary Care Doctors near 77571, TX

If Dr. Johnston isn't accepting new patients or isn't in your plan's network, these are the closest primary care doctors near 77571, TX:

DoctorSpecialtyMedicare Patients / yrDistance
Erin N. MunozPhysician Assistant379<1 mi
Bufford MooreFamily Practice184<1 mi
Penny MaderNurse Practitioner171<1 mi
Terry S. NewmanFamily Practice402.4 mi
Shauntel E. ScottNurse Practitioner1332.4 mi

View all primary care doctors near 77571, TX →

How to Use This Information

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

Compare Medicare Plans near 77571, TX → All Doctors near 77571, TX

Robert D. Johnston: Common Questions

Does Dr. Johnston accept Medicare?
Yes. Dr. Johnston is enrolled with Medicare and listed in the CMS Provider Enrollment, Chain, and Ownership System (PECOS). Whether a specific Medicare Advantage plan covers Dr. Johnston depends on that plan's provider network. Compare Medicare plans near 77571, TX →
Where is Dr. Johnston's office?
Dr. Johnston practices at 11006 SPENCER HWY, La Porte, TX 77571. Phone: (281) 470-2100.
What Medicare plans does Dr. Johnston accept?
Original Medicare (Parts A & B) is accepted. Medicare Advantage plan acceptance varies by carrier and plan year. Call the office at (281) 470-2100 to confirm your specific plan is accepted, or compare all Medicare plans near 77571, TX to see available options.
Does Dr. Johnston offer telehealth visits?
CMS does not currently list Dr. Johnston as offering telehealth. Call the office at (281) 470-2100 to confirm whether virtual visits are available.
How experienced is Dr. Johnston?
Dr. Johnston graduated in 1987 and has been practicing for approximately 39 years. In the latest CMS reporting year, Dr. Johnston treated 759 Medicare patients across 20 distinct procedure types.
How do I know if Dr. Johnston 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 (281) 470-2100 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 Primary Care Specialists

See which Medicare plans score highest for conditions commonly managed by this specialty in 77571, TX:

Does your Medicare plan cover Dr. Johnston?

Compare Plans near 77571, TX →