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Primary Care · Sherman, TX · Est. 2014

Your wellness
journey starts here.

Comprehensive, unhurried primary care from board-certified physicians with 64+ years combined experience — right here in Texoma.

Schedule Your Visit (903) 871-5671
  • Accepting new patients
  • Most insurance welcome
  • Same-day appointments
Highland Primary Care — board-certified physicians in Sherman, TX
  • Board-Certified Physicians
  • 25+ Years Experience
  • On-Site Labs
  • Accepting New Patients
By the numbers

A practice patients keep coming back to.

The kind of medicine that hasn't changed: real time, real expertise, real follow-through.

0+

Years combined experience

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Board-certified providers

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Services under one roof

0+

Insurance plans accepted

Our Team

Meet your care team

Board-certified physicians and providers dedicated to your long-term health and well-being.

Dr. Shahram N. Sani, MD — Board-Certified Internal Medicine Physician & Medical Director

Dr. Shahram N. Sani, MD

Board-Certified Internal Medicine Physician & Medical Director

  • Internal Medicine
  • Primary Care
  • Men's Health
  • Chronic Disease Mgmt

Board-certified Internal Medicine physician with 25+ years of clinical experience. Medical Director at Highland Primary Care. Earned MD from Tehran University of Medical Sciences; residency at Abington Memorial Hospital. Deep expertise in preventive care, chronic disease management, and men’s health.

Learn more
Diane R. Keahey, DNP, FNP-BC — Doctor of Nursing Practice & Family Nurse Practitioner

Diane R. Keahey, DNP, FNP-BC

Doctor of Nursing Practice & Family Nurse Practitioner

  • Family Medicine
  • Primary Care
  • Women's Health
  • Geriatric Care

Board-certified Family Nurse Practitioner with 24 years of clinical experience and a Doctorate from the University of Tennessee. Holistic, patient-centered care for all ages, with focus on diabetes, hypertension, anxiety, and women’s and geriatric health.

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Dr. Amit Warke, MD — Board-Certified Family Medicine Physician

Dr. Amit Warke, MD

Board-Certified Family Medicine Physician

  • Family Medicine
  • Primary Care
  • Preventive Medicine
  • Chronic Disease Mgmt

Board-certified Family Medicine physician with 15+ years caring for patients of all ages. MD from Maharashtra Institute of Medical Education and Research, Pune; residency at LSU Health (EA Conway Medical Center). Thorough, compassionate approach to acute and chronic conditions.

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Why Highland

A real practice. Real relationships.

We're not a chain. We're not a mail-order clinic. We're a long-established Sherman practice that takes the time to know you.

Learn about our practice
"We listen first. Appointments are unhurried. Your story matters."
  • 01

    Board-Certified

    Every provider is board-certified — Internal Medicine, Family Medicine, and DNP. Real credentials, real depth of training.

  • 02

    Patient-Centered

    We listen first. Appointments are unhurried. Your story matters more than a 7-minute time slot.

  • 03

    On-Site Labs

    Bloodwork and routine screenings done in-office — no second trip, no third bill, no waiting weeks.

  • 04

    Local to Sherman

    Long-established Texoma practice. We know our community because we live in it.

Patient Voices

What our patients say

Real experiences from Highland Primary Care patients in Sherman and the surrounding Texoma area.

Dr. Sani is incredibly thorough and takes the time to actually listen. I've never felt rushed. He explains everything clearly and genuinely cares about my health.
Sarah M.
Sherman, TX
Finally found a primary care doctor who manages all my conditions in one place. The office is welcoming, staff is friendly, and appointments are easy to book.
James R.
Denison, TX
Dr. Sani helped me lose 35 pounds through his medical weight loss program. He's knowledgeable, caring, and my whole family now sees him for primary care.
Lost 35 lbs
Maria T.
Sherman, TX
Insurance Accepted

Most major plans welcome.

Verify your specific plan by calling our office at (903) 871-5671.

MedicareTMHP Texas MedicaidBlue Cross Blue ShieldAetnaCignaUnitedHealthcareHumanaTricareAARPBaylor Scott & WhiteGEHAAmerigroupMolina Healthcare
Common Questions

Frequently asked questions

Are you accepting new patients?
Yes. Highland Primary Care is currently accepting new patients of all ages. Call (903) 871-5671 or book online to schedule your first visit.
What insurance do you accept?
We accept most major insurance plans including Medicare, Medicaid, Blue Cross Blue Shield, Aetna, Cigna, UnitedHealthcare, Humana, Tricare, and more. Call to verify your specific plan.
Do you offer same-day appointments?
Yes. Same-day appointments are often available for acute illnesses, infections, and urgent medical concerns. Call us first thing in the morning for the best chance of getting in.
Where are you located?
300 N Highland Ave, Suite 455, Sherman, TX 75092. We serve Sherman, Denison, Pottsboro, Howe, Whitesboro, Van Alstyne, and surrounding Texoma communities.
What should I bring to my first visit?
Please bring your insurance card, photo ID, a list of current medications, and any prior medical records or imaging you have available.
Get Started

Request an appointment

Fill out the form below and our team will contact you shortly. Or call us directly.

Ready to schedule your visit?

We're accepting new patients. Call us or book online — it takes less than a minute.

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