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Dr. Mark Posner, MD

Dr. Mark Posner, MD

Allergy & Immunology*
35+ years of experience

Dr. Mark Posner, MD is an allergist-immunologist in Collegeville, PA and has over 35 years of experience in the medical field. Dr. Posner has extensive experience in Environmental Allergies and Food & Drug Allergies. He graduated from Rutgers Robert Wood Johnson Medical School in 1985. He is affiliated with medical facilities such as Reading Hospital and Paoli Hospital. He is not accepting new patients.

4.9 Star Rating
Based on 591 reviews 4.9 Star Rating (591 reviews)

Allergy & Asthma Specialists

534 Second Ave Ste 105 Collegeville, PA 19426
Telehealth available
(610) 409-6226

At a Glance

  • Area of Expertise
    Dr. Posner specializes in the area of Allergy & Immunology. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ • See hospitals
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Dr. Posner's Reviews

Likelihood to recommend Dr. Posner

4.9
591 ratings, 139 with a written review
5 star
93%
93%
4 star
5%
5%
3 star
1%
1%
2 star
1%
1%
1 star
0%
0%

Your trust is our top concern.

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He understands my diagnosis and I feel confident in his ability to treat me
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
Helpful
Laura V. – Mar 05, 2020
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Dr. Posner is great! He listens and is very thorough on the examinations.
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
  • Long wait times
Helpful
J. L. – Mar 04, 2020
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pretty good
What went well
  • Appointment scheduling
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Anonymous – Mar 04, 2020
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So helpful I want my mom to see 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
Helpful
Anonymous – Feb 19, 2020
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Very kind and helpful
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
Helpful
Anonymous – Feb 14, 2020
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I really feel confident in Dr. Posner's diagnoses. He definitely knows what he's doing and is very personable and professional!
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
Helpful
Leigh A. M. – Feb 13, 2020
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Dr. Posner took a great amount of time to listen to the issues that I had. He addressed everything that I had the day of my visit and took the time to answer all the questions I had. He also made sure that I knew everything about my diagnosis and had a clear understanding of what I can do to help it.
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
Helpful
Mia C. – Feb 07, 2020
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very pleased
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
Helpful
Anonymous – Feb 07, 2020
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Dr. Posner always spends time with you and is very thorough. He answers all questions and is very helpful in helping to relieve your allergies.
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
Helpful
Anonymous – Feb 07, 2020
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any time i need a appointment i get in for the next day
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
Helpful
Bryanna L. – Feb 06, 2020
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Dr. Posner is a caring and compassionate doctor who listens but also who is knowledgeable professional and kind. He is never in a hurry, he wants a full picture and is orders tests to help you get to the root cause of your issue. I refer everyone I know who needs a doctor like him, to 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
Helpful
Rachelle D. – Feb 06, 2020
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He's always happy to answer questions and listens to what I'm experiencing to determine how to best help me.
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
  • Long wait times
Helpful
S. G. – Feb 05, 2020
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Staff is wonderful and attentive. Very thorough. I never feel 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
Helpful
Helen A. – Jan 24, 2020
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Dr Posner takes the time to listen to concerns and diagnose issues accurately. He also has no problem if i need to call him. Awesome physician.
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
  • Long wait times
Helpful
Robin K. – Jan 23, 2020
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i love Dr Posner and the office staff. I feel like my allergies and asthma are well managed on the regimen he has me on. I recommend this practice all the time!
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
Helpful
Amy C. – Jan 21, 2020
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very positive! caring, concerned
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
Helpful
Ken S. – Jan 16, 2020
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Doctor has helped me with many allergy and asthma issues, even with my acid reflux! Works well with my ENT after my sinus surgery. Always a great experience!
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
Helpful
K. M. – Nov 16, 2019
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Everyone here is very nice to their patients and I always feel welcomed.
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
Helpful
Anonymous – Nov 16, 2019
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dr Posnner and staff are very helpful and friendly and ptofessional the treatment i,ve receiving has been very benefiicial
What went well
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Tony L. – Nov 16, 2019
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Very positive. Used to being dismissed, talked over and interrupted. Good listener and I feel listened to and validated. Gave me optional diagnosis for us to explore, can't wait to see him for follow up!
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
Helpful
Connie M. – Nov 14, 2019
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Leave a review

How was your experience with Dr. Posner?

Know Before You Go

About Me

care philosophy

Dr. Mark Posner graduate with a medical degree from University of Medicine and Dentistry of New Jersey, He has his pediatric residency at Babies Hospital of Columbia Presbyterian Medical Center and his allergy and immunology fellowship at Schneider...read more

biography

Dr. Mark Posner, MD, is a board certified allergist with Allergy and Asthma Specialists seeing patients of all ages.

  • Allergy & Immunology

  • Allergy

  • Pediatrics

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

  • Li Jewish Medical Center

    Fellowship Hospital

  • Long Island Jewish Medica

    Fellowship Hospital

  • Schneider Children's Hospital

    Fellowship Hospital

  • Colum Presby

    Residency Hospital

  • Rutgers Robert Wood Johnson Medical School

    Medical School, 1985
American Board of Medical Specialties®
American Board of Allergy & Immunology®
- 
Allergy & Immunology
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.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

  • American College of Allergy, Fellow

  • Pennsylvania Allergy and Asthma Association, Member

  • Philadelphia Allergy Society, Member

  • American Academy of Allergy, Fellow

Focus on Nasal Polyps

Locations

Allergy & Asthma Specialists

Allergy & Asthma Specialists-Route 29 Collegeville, PA534 Second Ave Ste 105 Collegeville, PA 19426
1
Allergy and Asthma Specialists, PC470 Sentry Pkwy E Ste 100-200 Blue Bell, PA 19422
2

Allergy & Asthma Specialists-Pottstown, PA

Allergy & Asthma Specialists-Pottstown, PA5 S Sunnybrook Rd Pottstown, PA 19464
3

Affiliated Hospitals

  • Paoli Hospital

    255 W Lancaster Ave
    Paoli, PA 19301
    Recipient of 16
    hospital awards

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    Outstanding Patient Experience Award™ (2024, 2023, 2022)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    View all awards

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

    88%
    Patients said they were given information about recovering at home

    4% higher than the national average

    81%
    Patients said that nurses always listened to them and explained things well

    6% higher than the national average

    View all patient feedback

  • Grand View Health

    700 Lawn Ave
    Sellersville, PA 18960
    Recipient of 20
    hospital awards

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

    Top 5% in the nation for consistently delivering clinical quality

    Surgical Care Excellence Award™ (2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

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

    89%
    Patients said they were given information about recovering at home

    5% higher than the national average

    80%
    Patients said that nurses always listened to them and explained things well

    5% higher than the national average

    View all patient feedback

  • Phoenixville Hospital

    140 Nutt Rd
    Phoenixville, PA 19460
    Recipient of 1
    hospital award

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

    84%
    Patients said they were given information about recovering at home
    81%
    Patients said that nurses always listened to them and explained things well

    6% higher than the national average

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