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Dr. Gregory L Shannon Is this you?

About Dr. Gregory L Shannon

Dr. Gregory L Shannon, MD is a Doctor primarily located in Sugar Land, TX. He has 22 years of experience. His specialties include Gastroenterology. Dr. Shannon has received 3 awards. He speaks English.

Rating Overview

43 Ratings with 20 Comments

The overall average patient rating of Dr. Gregory L Shannon is Great. Dr. Gregory L Shannon has been rated by 43 patients. From those 43 patients 20 of those left a comment along with their rating. The overall rating for Dr. Gregory L Shannon is 3.7 of 5.0 stars.

Mapbox Map of Dr. Gregory L Shannon

Primary Address

Gastroenterology Associates Of Texas Pa

17510 W Grand Pkwy S Ste 220
Sugar Land, TX 77479
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Dr. Gregory L Shannon has the following 1 specialty

  • Gastroenterology

    A gastroenterologist is a specialist in diagnosis and treatment of conditions involving the digestive/gastrointestinal (GI) tract. These doctors are experts on how food moves through the digestive system and is chemically broken down, with nutrients being absorbed and waste excreted. You might see this kind of doctor if you are experiencing any number of stomach issues, some of which might be severe diarrhea, irritable bowel syndrome, hemorrhoids, ulcers, acid reflux, Crohn's disease and more.

  • Expertise

    13 Expertise

  • Pancreatic Diseases
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Colon Cancer
  • Colonoscopy
  • Constipation
  • Abdominal Pain
  • Hemorrhoids
  • Gallbladder Diseases
  • Crohn's Disease
  • Celiac Disease
  • Acid Reflux Disease (GERD)
  • Ulcerative Colitis
  • Irritable Bowel Syndrome (IBS)


Showing 5 of 43

over ONE HOUR WATEwait

appointment for 2p.m. 30 mln ask how muck longer ---ans. not much . 3p.m. how much longer? ans. not much L was in too much pain to stay LOOKING for gastroe. dr. HELP ln Missouri city &stafford Tx .

Wait time
60 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Worse Visit EVER!!

I scheduled an appointment with Dr. Shannon to have an EGD procedure performed for an upcoming surgery with another surgeon. However, when I arrived for my appointment I was told that I had been given the wrong time and date, Dr. Shannon was in surgery. Therefore, I was asked and given a time to return later that day, when his surgery clinic had ended. When I returned, I waited over 30 minutes before I was called into an exam room. Once I finally was put into an exam room, his nurse had updated my history etc. I received a date and time for my EDG procedure, and was told by his nurse that I didn’t need to see Dr. Shannon and could leave. I explained to her that I had no knowledge of the how to prepare for the EDG procedure etc. So, I would like to speak with Dr. Shannon (Plus, they had taken my $50.00 co-pay). Once, Dr. Greggory, entered my room, he didn’t bother to say hello, how are you? etc. He did say “Okay, we got you all fixed up. Your scheduled for the EDG procedure. I’ll see you then. I’ve got to get back to the patients that have appointments.” At this point, I reached out to shake his hand and said “Hello, it’s good to see you, as well.” He hesitated, then reached to shake my hand, then said “Okay! Great!! I’ll see you in a couple of weeks, my nurse got you ready to go!” Even though, I was shocked, I turned gabbed my things and walked out of the room thinking, Wow!! He didn’t bother to ask whether I understood the reason for procedure etc. I immediately went to the front desk and requested a form to transfer my records. The Hispanic lady that had previously called to confirm my appointment the day before, asked me to wait. Once she returned she asked whether I would like to speak with the office manager. I said “I’m too upset to speak with anyone!! I just want a copy of the form or you can fax it to my home. I never got the form. However, his office manager called me before I reached the parking lot and asked “What can I could do to the fix things? Or whether I would like to speak with Dr. Shannon regarding the mix-up.” I said “YES!” I would very much like to discuss with Dr. Shannon what occurred today.” I never received a return phone call.

Wait time
35 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Great Doc!

This was one of the most personable docs I have seen in a long time. He listened very attentively and helped me with a problem that I had suffered with for years. Me and my husband moved here from L.A. and we're referred to Dr. Shannon. Within a week we had a diagnosis and treatment has gone exceedingly well! After seeing several docs in California who had diagnosed me wrong I am so happy now to be with Dr. Shannon!

Wait time
5 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
Two Stars

Dr. Shannon is a great doctor. However, his scheduling staff and front desk administration are professional yet incompetent. As an existing patient, when I suffer from symptons of an illness doctor is treating me for I should not have to wait 1 month to see him. This has happended to me several times this year. Moving on to a new doctor.

Full Review Rating Breakdown
Great Doc!

I've seen 3 GI docs in the last 12 years and this physician is one of the best bar-none! He listens!!! And is very compassionate! His staff was also great!!! I waited 20 minutes beyond my appointment time before I was seen but it was really worth every minute! Love this doc!

Wait time
20 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Full Review Rating Breakdown
  • Awards

    3 Awards

  • Compassionate Doctor Recognition (2010, 2013, 2016, 2015, 2012)

    Compassionate Doctor certification is granted to physicians who treat their patients with the utmost kindness. The honor is granted based on a physician's overall and bedside manner scores.

  • Top 10 Doctor - City (2014)

    Top 10 Doctors are chosen by the millions of patients who visit Vitals each year to find a new doctor and share their experiences by providing ratings and reviews. In order to differentiate highly-regarded doctors from the rest for patients in search of quality care, Vitals awards Top 10 Doctor honors to those physicians within a certain specialty and geographic area who are consistently given top ratings by their patients.

  • Patients' Choice Award (2010)

    Patients' Choice recognition reflects the difference a particular physician has made in the lives of his/her patients. The honor is bestowed to physicians who have received near perfect scores, as voted by patients.

  • Education

    22 Years Experience

  • Northwestern University The Feinberg School Of Medicine

    Graduated in 1996

  • Accepted Insurance

    Dr. Gregory L Shannon accepts the following insurance providers.

  • Aetna
    • Aetna Choice POS II
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna Signature Administrators PPO
  • BCBS Blue Card
    • BCBS Blue Card PPO
  • BCBS Texas
    • BCBS TX Blue Advantage HMO
    • BCBS TX BlueChoice
    • BCBS TX HMO Blue Texas
  • Cigna
    • CIGNA LocalPlus
    • CIGNA Open Access Plus
  • Humana
    • Humana Choice POS
    • Humana ChoiceCare Network PPO
    • Humana HMO
    • Humana HMO Premier
    • Humana Houston HMOx
    • Humana National HMO
    • Humana National POS
  • Multiplan
    • Multiplan PPO
    • PHCS PPO
  • United Healthcare
    • UHC Choice Plus POS
    • UHC Navigate HMO
    • UHC Navigate POS
    • UHC Options PPO
  • View by Location

Locations & Directions

Gastroenterology Associates Of Texas Pa, 17510 W Grand Pkwy S Ste 220, Sugar Land, TX
  • Nearby Doctors

    Dr. Gregory L Shannon is similar to the following 3 Doctors near Sugar Land, TX.