Dr. Marc Allen, DO
New Patients

Dr. Marc Allen, DO


Family Medicine | Male

Dr Marc Allen 1045 W Jericho Tpke Smithtown, NY 11787 Get Directions

Care Philosophy

Dr Allen places a strong emphasis on disease prevention. "I believe it is far better and easier to prevent a medical problem than to treat it after the fact"


Dr Marc Allen is a board certified Internal Medicine Physician who specializes in Primary Care and Preventative Medicine. 

Learn about this doctor

Dr. Allen's Experience

Experience Match

See how Dr. Allen's experience matches your preferences.


For the best healthcare for your needs, choose a doctor who specializes in your medical condition.

Board Certifications

Board certification indicates that a doctor is highly qualified in the medical field in which they practice.

Conditions Treated

Check to see that this provider treats your medical condition.

Procedures Performed

Check to see that this provider performs the procedure that you need.

Background Check

Check to see if your provider has any malpractices, board actions, or sanctions.


Learn more about where this provider went to medical school, residency, and more.

Awards & Recognition

View information about special awards and recognition for this provider.

Languages Spoken

Check to see what languages this provider and/or staff speak.

Memberships & Professional Affiliations

View memberships and affiliations associated with this provider.

Visiting Dr. Allen

Dr. Allen accepts 28 insurance carriers

Affiliated Hospitals

Hospital Quality
Check out the quality of care at the 1 hospitals where Dr. Allen has admitting privileges.

Dr. Allen's Reviews

Likelihood of recommending Dr. Allen to family and friends
based on 44 total surveys (6 with reviews)
Dr. Allen's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Reviews (6)
Huntington Station, NY |
Supernice doctor. I couldn't believe he was a doctor. He was such a. Ice regular guy. Easy to talk to. Seemed knowledgeable as well. My wife told me about him and for once she was right.
I love this doctor. I saw him for he first time recently and he was the best doctor I have ever seen. He was so nice and caring. His office is beautiful. I was very pleased.
northport, ny |
All I can say is wow. A real top shelf operation. Beautiful new office with professional staff. Very well run. The doctor is great and really took the time to listen unlike the numerous walk ins I have visited in the past. An appointment is required here but it is so worth it.
New York, NY |
Fantastic Doctor! So nice and caring. A real person not some nerdy robot. A regular guy who is extremely competent. Beautiful new medical building is stunning. Professional and courteous staff. A real win win !
in Kings Park, NY |
Dr Allen is a true good old fashioned doctor who really cares about his patients. He is so down to earth and really listens. I consider him a friend as well as my doctor of over 10 years. I have sent him numerous friends and family members and they all cannot thank me enough. He is a true gem and feel so lucky to have him.
in Dix Hills, NY |
Dr. Mark Allen, Communication skills are excellent with his bed side manner. He takes the lead in helping his patients. I have found him to be a right good fit for me.
Have you seen Dr. Marc Allen, DO?
Are you Dr. Allen?
Make it easy for patients to share their feedback. Also manage your personalized profile!

Compare Dr. Allen

Compare this Doctor
View other doctors with similar experience to find the right doctor for you.
View all 10 matches

Dr. Allen says...

Dr Marc Allen is a board certified Internal Medicine Physician who specializes in Primary Care and Preventative Medicine. 

Dr. Allen's Care Philosophy

Dr Allen places a strong emphasis on disease prevention. "I believe it is far better and easier to prevent a medical problem than to treat it after the fact"

Dr. Allen says...

Dr Allen treats a broad range of General Medicine problems such as Diabetes, High Blood Pressure, High Cholesterol, Thyroid Problems, Upper Respiratory Infections, Rashes and many more.

Dr. Allen says...

Dr. Allen offers a broad range of in-office procedures including allergy testing, sleep apnea testing, laser pain treatment, and many more .

Dr. Allen's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Family Medicine
  •  Board certified in Internal Medicine
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Allen has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for New York.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Allen's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Internal Medicine

Conditions Treated

  • Anemia
  • Anxiety
  • Asthma
  • COPD (Chronic Obstructive Pulmonary Disease)
  • Depression
  • Diabetes
  • High Cholesterol
  • Hypertension
  • Obesity
  • Osteoporosis
  • Pulmonary Disease
  • Sleep Apnea


  • Medical School
    Ny Coll Of Osteo Med Ny Inst Of Tech Old Westbury

    Graduated in 1999

  • Internship Hospital
    North Shore University Hospital

    Completed in 2000

  • Residency Hospital
    North Shore University Hospital

    Completed in 2002

  • Undergraduate School
    Stony Brook Hosp-Suny

    Graduated in 1995

Languages Spoken

  • English
  • Spanish

Memberships &
Professional Affiliations

Dr. Allen does not have any memberships or affiliations listed. If you are Dr. Allen and would like to add memberships or affiliations, please update your free profile.


  • Family Medicine
  • Internal Medicine
  • Preventive Medicine

Procedures Performed

  • Allergy Skin Testing
  • Echocardiography
  • Electrocardiogram (EKG)
  • Immunization
  • Physical Examination
  • Spirometry