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Dr. Tommy Sim, MD

Dr. Tommy Sim, MD

Allergy & Immunology*

Dr. Tommy Sim, MD is an allergist-immunologist in Friendswood, TX. Dr. Sim has extensive experience in Environmental Allergies. He is affiliated with HCA Houston Healthcare Clear Lake. He is accepting new patients and telehealth appointments.

4.8 Star Rating
Based on 16 reviews 4.8 Star Rating (16 reviews)

At a Glance

  • Explains Conditions WellPatients said this doctor explains conditions well. See reviews
  • Offers TelehealthThis doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top HospitalSurgical Care Excellence Award™ See hospitals

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Dr. Sim's Reviews

Likelihood to recommend Dr. Sim

4.8
16 ratings, 9 with a written review
5 star
94%
94%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
6%
6%

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Dr. Sim was great!! Not only did he get me in almost immediately, but the appointment never felt rushed. He spent quality time, was very knowledgeable, and even called me on his own time the next day to check and see how I was doing. Totally recommend!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Kayla – Mar 19, 2021
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Can't begin to state how pleased I have been w/ Dr. Sim & his entire staff. Referred to Dr. Sim for chronic condition & immediately diagnosed & prescribed new med. that he felt would help. Within only a couple of days of starting new med. symptoms rapidly improved. He even called that evening after receiving 1st dose to check on me! Staff exceptional & pleasure to work w/. Wait never more than a few min. On follow-up with Dr's at M.D.A. they inquired who "new" Dr. was due to significant improvements in my condition. M.D.A. now referring patients! This top-tier, globally ranked research hospital recognizes my cutting-edge treatment from Dr. Sim. Office clean, modern & utilizes current tech. He has great bedside manners which is a commodity. Very personable, friendly & most importantly, knowledgeable & never rush's my appointment. If review sounds over-the-top, it's because accurate diagnosis & treatment is literally life-changing. Dr. & ENTIRE Staff are kind, professional & personable.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
2 others found this helpful
Helpful
Phil – Apr 17, 2020
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Hello I have been under the care of Dr. Sim and his staff for over 14 years. Over this time I have witnessed the best care for not only me but my family as well. Dr. Sim demonstrates his concern for my heath and my family's heath by his time spent with us during visits. Moreover he calls and checks up to see if we are feeling better after a treatment for an illness. Who does that anymore? That is best care for patients. Just a couple of more reasons why we will not go to any other doctor: Dr. Sim reminds us for flew shots each season, recommends the best medication for our pill phobia, the staff is more than willing to help get medication refilled at a pharmacy close to our home or office, even mail order and insurance billing help. I have had a difficult situation with insurance and they have made is easy. To close I volunteer on a farm each year for harvest. This would not be possible without the treatment and loving care of Dr. Sim and his staff. My family and I highly recommend him
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
Ed Dill – Nov 23, 2019
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Dr. Sim has been my allergist for over a decade. I received excellent care from him and his wonderful staff. I’m moving out of the area and will surely miss them.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
Ellen I’Anson in Friendswood, TX – Oct 13, 2019
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I’ve never been treated so badly by an office staff in my life. My girls have been seeing Dr Sim for 5 years. Everything was great (definitely not on top of ANY new treatments or information for food allergies but generally pleasant) until Chrystal left. The day after they posted an open LVN position, I got a very nasty call from a staff member letting me know they would not be following the same procedures as last year for food allergy patients requiring 504s. When I went in to pick up my daughters documents for school, they tried to pretend that they had “thrown them all away” because I had another allergist request medical records for one of my daughters. They finally brought them out to me after I was adamant that I wanted the documents back. They whited out parts of the document and acted like catty, spiteful, petty teenagers. I will no longer recommend this office and will not let any of my children go back. I had to request that they take my daughters pictures off of their FB
What went well
No results
What could be improved
  • Didn't trust the provider's decisions
1 other person found this helpful
Helpful
Aug 01, 2019
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I have a patient for more than 15 years and I have been treated wonderfully.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 others found this helpful
Helpful
WdMilner in League City, TX – Feb 15, 2019
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As I was making a follow-up appointment with Dr. Sim, I told the front desk receptionist that my appointment with him and his entire staff was "the most pleasant experience I had ever had with a doctor." Everyone in his office was very professional and willing to answer as many questions as I had. Dr. Sim is an excellent physician who takes time to listen to his patients in order to try and help them feel better. I'm so glad I found him. If you want knowledge/expertise, go to Dr. Tommy Sim!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
AJ Smith in Houston, TX – Jun 28, 2017
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Son had cough for six weeks. Pedi tried antibiotics and inhaler without success. Dr Sim was very interested in my son's symptoms and history. Very kind and caring. Gave us detailed explanation of cough inorder for us to understand. Prescribed the right meds and specific inhaler to son's needs. Saw healing quickly. Great doctor! Not rushed.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Carri in League City, TX – Mar 28, 2017
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I have been a patient of Dr, Sim for over 20 years. He has been a life saver for me. I totally trust him with my life. I can't say that about all doctors.. He is very patient and explains things so that I can understand.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 others found this helpful
Helpful
Sue Smith in Manvel, TX – Apr 22, 2016
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About Me

biography

Dr. Tommy Sim, MD is an allergist-immunologist in Friendswood, TX. Dr. Sim has extensive experience in Environmental Allergies. He is affiliated with HCA Houston Healthcare Clear Lake. He is accepting new patients and telehealth appointments.
  • Allergy & Immunology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Of Texas Medical Branch

    Fellowship Hospital
  • Albert Einstein College Of Medicine

    Residency Hospital
  • Santo Tomas Hospital

    Internship Hospital
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
  • English

  • Spanish

Affiliated Hospitals

  • HCA Houston Healthcare Clear Lake

    500 W Medical Center Blvd
    Webster, TX 77598
    Recipient of 27
    hospital awards

    Surgical Care Excellence Award™ (2025)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    America's 250 Best Hospitals Award™ (2024, 2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

    How patients felt about the care they received at this hospital.

    81%
    Patients said they were given information about recovering at home

    3% lower than the national average

    74%
    Patients said their room and bathroom were always kept clean

    7% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality