Primary Care Internal Medicine and Medical Subspecialties

Welcome to Amarillo Medical Specialists.

Amarillo Medical Specialists is the largest private practice Internal Medicine group in the Texas Panhandle. We are focused on providing a patient centered approach, and we want to be your 'Medical Home'.

ANNOUNCING :  Janet Schwartzenberg MD and Tommie Buchanan FNP-C joining Amarillo Medical Specialists, effective February 4, 2014.

We are thrilled to announce that Dr Schwartzenberg and Ms. Buchanan are joining the AMS team!

By joining Carlos Plata MD, this will create a strong and well respected Rheumatology department at AMS. We expect to be able to expand our offerings of rheumatology diagnostics, procedures, and infusion services.

Dr Schwartzenberg and Ms Buchanan come to us from the Amarillo Diagnostic Clinic. Their existing patients are welcome their new practice, and we are working hard for a smooth transition to AMS. 

Dr Schwartzenberg and Ms Buchanan will be located at 1215 S. Coulter St. For more information, you may call 350-7983.



TEXAS MONTHLY MAGAZINE has honored seven of our current physicans this year by their inclusion on the Super Doctors ® 2013 list.  Amarillo Medical Specialists now has the largest number of Internal Medicine doctors included on the Super Doctors list of any group in the region. With the addition of Dr Janet Schwartzenberg this year, we will have eight doctors listed for this honor.

Congratulations to: Dr Milton Giron,    Dr Georges Maliha (Kidney Disease), Dr Alan Keister (Internal Medicine) and Drs. Stephen J Usala, Kenny M Brantley , Ed Dodson & William C. Biggs (Endocrinology and Diabetes), and Dr. Janet Schwartzenberg (Rheumatology).

In previous years, Dr Lawrence Schaeffer and Dr Jesus Sahad have also been included on the Texas Monthly Super Doctors list.

We are interested in your opinion of our patient information 'portal'.

If you have used our portal since the upgrade in March, please fill out this survey.

Click here to take survey

 Now we're on Facebook too....

If you are new to our office, and have already scheduled an appointment, then check out the 'New Patient Pages' to the left.

If you are looking for a doctor, we have information on most of our doctors to the right side of your screen. We invite you to call directly to the doctors office to schedule an appointment.


Dr. Hernan Miranda is now seeing patients in our office at 1215 S. Coulter, Suite 305.

Dr Miranda completed his residency in Internal Medicine at Raritan Bay Medical Center in Perth Amboy, NJ.  He worked as a Hospitalist for three years, and then decided to work in outpatient primary care and specialized in Adult Primary Care Internal Medicine.

His experience includes administrative duties as Director of the Outpatient Clinic, of East Texas Medical Center -Gilmer  First Physicians, and Chief of Medical Staff at Gilmer Hospital.

Dr Miranda considers it a privilege being a bilingual doctor, and is fluent in English and Spanish.

He strives to provide up to date medical recommendations. Dr Miranda offers personal service, with respect, dignity and compassion. He teams with his patients in the treatment of their medical problems.

He looks forward to serving the patients of the Panhandle as their trusted physician.

Dr. Miranda is taking new patients now. To make referrals, or schedule an appointment, please call (806) 358-1374.


If you are looking for our most popular page, 'How to review your lab test results" , it is available at .

In a hurry for a new patient appointment?

Here are the doctors with the shortest wait times for a new appointment:

Gynecology:  Estelle Archer, MD  (806) 353-3061

Internal Medicine:  Susan Neese MD (806) 677-2039, Hernan Miranda (806) 358-1374

Endocrinology/Diabetes: Ed Dodson, MD  (806) 358-8331 and Cesar Arias MD (806) 677-2030  

Nephrology: Tarek Naguib MD (806) 358-8477

The information contained on this site is for general health information only. It is not medical advice. Never substitute any information or advice from the Internet for bona fide health care. You should consult with your personal doctor before undertaking any action based on information or advice found here or elsewhere on the Internet. Please see our legal notice for more information. This site subscribes to the ethical principles of Health On the Net code (HONcode).


This website is certified by Health On the Net Foundation. Click to verify. This site complies with the HONcode standard for trustworthy health information:
verify here.


Search only trustworthy HONcode health websites:


r site.




PrintView Printer Friendly Version

EmailEmail Article to Friend