What patients are saying
Overall rating
4.77
Average wait time
4.78
Bedside manner
4.65
“Dr. Karlin was friendly and very informative at my first appointment. I look forward to completing allergy testing and making a plan with him to manage my symptoms”
Sam B.January 27, 2025
“Office staff was friendly and made this first visit easy. Dr. Karlin is warm and has a good manner. A very practiced professional, no pun intended.”
Initials hiddenJune 13, 2023
About Dr. Roger Karlin
Dr. Karlin graduated from Mt. Sinai School of Medicine. He did his internship at the Beth Israel Medical Center and his residency at the University of Connecticut Health Center. Dr. Karlin is an associate attending physician in the Department of Medicine at Danbury Hospital. He is a member of Connecticut State Medical Society, Fairfield County Medical Association, Danbury Medical Society, American College of Physicians, and the American College of Allergy and Immunology. He is board certified.
Dr. Karlin's staff has been with him for over ten years. They are always happy to answer any questions you may have and make every effort to accommodate your needs. At CT Internal Medicine and Allergy, we pride ourselves on knowing our patients by name, and on creating a warm and comfortable atmosphere for each patient.
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In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Medicare
UnitedHealthcare
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Areas of expertise
This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Chronic diabetes
Chronic high blood pressure
Underactive thyroid
High cholesterol
Acute sinusitis
Chronic diabetes
Chronic high blood pressure
Underactive thyroid
High cholesterol
Office locations
CT Internal Medicine and Allergy (1 of 2)
88 Route 37, Fieldstone Plaza, New Fairfield, CT 06812
1 of 2
Education and background
Practice names
Board certifications
- American Board of Internal Medicine
Education and training
- Medical School - Icahn School of Medicine at Mount Sinai, Doctor of Medicine
- Beth Israel Medical Center (Internship)
- University of Connecticut (Residency)
Professional memberships
- Connecticut State Medical Society
- Fairfield County Medical Association
- American College of Physicians
- American College of Allergy, Asthma and Immunology
Languages spoken
- English
Provider's gender
Male
NPI number
1700894177
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.77
Wait time
4.78
Bedside manner
4.65
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
62 reviews
Most relevant
Positive experience overall. Informative and helpful in resolving my issues.
February 27, 2025Matthew R.Verified patient
Dr Karlin treated me as her patient so well.. I was comfortable telling him what I feel, God bless him
May 17, 2022Juvy C.Verified patient
Dr. Karlin and his staff were extremely polite and caring. I found my new primary care doctor!
August 10, 2023James D.Verified patient
Excellent experience. I definitely would recommend Dr Karlin!!
January 21, 2025Michael D.Verified patient
Great service and friendly staff. Very professional and fast. Highly recommended!
June 2, 2023Ares Q.Verified patient
Very good. Very efficient office visit and very professional doctor and assistants.
May 1, 2013Timothy R.Verified patient
Strong communications. Pleasant staff. Dr. Karlin is easy to talk to.
October 11, 2023Thomas O.Verified patient
Not an allergy specialist that is familiar with MCAS.
More than 1 year agoInitials hidden
Great first visit and very happy that I made the switch!
June 2, 2023Joanna A.Verified patient
Nice office, very friendly staff, very nice nurse and doctor!
January 18, 2021Marianne V.Verified patient
Place was clean. Service was great. Doctor was patient
More than 1 year agoInitials hidden
Dr. Karlin is an excellent GP & his staff is wonderful.
More than 1 year agoJD
When I went to the doctor for a rash he looked at my rash and went I’ve never seen that before and just prescribed me random medicine, just seemed very unprofessional because other dermatologists have been way more thorough and in depth
March 16, 2026Robert D.Verified patient
Dr. Karlin was friendly and very informative at my first appointment. I look forward to completing allergy testing and making a plan with him to manage my symptoms
January 27, 2025Sam B.Verified patient
Great!
September 1, 2023Joanna A.Verified patient
Office staff was friendly and made this first visit easy. Dr. Karlin is warm and has a good manner. A very practiced professional, no pun intended.
June 13, 2023Initials hidden
Today was my first time being seen by Dr. Roger Karlin as my new primary doctor. He matched my energy, so did all of the staff. Dr. Karlin listened to everything I spewed on about (I'm a hypochondriac lol) so he's obviously a great listener. The nurse was so nice and calming when she had to withdraw two vials. The wait time was probably 1 minute. Overall great experience.
More than 1 year agoInitials hidden
Dr. Roger is a great doctor because he gets right to the point and doesn't try to make small talk with you and waste your time by beating around the bush. I would recommend this doctor, although the charisma and welcoming to the office by the desk lady wasn't that warm as I would expect but rather dull and not with much energy. The nurse had more charisma but she also lacked in that area I would say. Even so though, my visit was pleasant and relaxing and I definitely would come back for future appointments.
More than 1 year agoInitials hidden
I saw doctor Karlin for an annual physical, just having moved to a new area. I had an excellent experience with Dr Karlin and his staff! Highly recommended.
August 13, 2021Joyce B.Verified patient
Listened well and didn’t make me feel rushed.
July 5, 2021Matthew D.Verified patient
This was my initial visit. I explained my reasons for wanting to affiliate with a CT doctor and my concerns today. Dr. Karlin was a very attentive listener. He changed my blood pressure meds and he made a recommendation for an arthritis specialist. I have an appointment with him soon for an annual physical. I look forward to a long relationship with Dr. Karlin.
June 16, 2021Nancy C.Verified patient
Very friendly staff. Everyone was professional and I did not wait for my appointment or to be seen by the doctor. The physician assistant was wonderful.
May 22, 2021Deborah L.Verified patient
He was nice and thorough.
September 1, 2013Initials hidden
Excellent
More than 1 year agoInitials hidden
Everyone is always wonderful!
More than 1 year agoCL
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February 14, 2026Sean Z.Verified patient
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How soon can I make an appointment with Dr. Roger Karlin?
Generally, Dr. Roger Karlin has appointments available on Zocdoc within 1 week. You can see Dr. Karlin's earliest availability on Zocdoc and make an appointment online.
Is Dr. Roger Karlin accepting new patients?
Dr. Roger Karlin generally accepts new patients on Zocdoc. You can see Dr. Karlin's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Roger Karlin accept my insurance?
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Can I make an appointment with Dr. Roger Karlin online?
Yes, you can make an appointment online with Dr. Karlin using Zocdoc. It’s simple, secure, and free.
What practice does Dr. Roger Karlin work with?
Dr. Roger Karlin works with CT Internal Medicine and Allergy.
Where is Dr. Roger Karlin's office located?
Dr. Roger Karlin has 2 office locations, including in New Fairfield and Danbury, view full addresses on Dr. Karlin's profile.
Which board certifications does Dr. Roger Karlin have?
Dr. Roger Karlin is certified by American Board of Internal Medicine.
What are common reasons for patients to see Dr. Roger Karlin?
Dr. Roger Karlin frequently sees patients for Allergy Consultation, Annual Physical, Chiropractic Consultation, Foot Consultation, and Illness. You can see other visit reasons for Dr. Roger Karlin on their profile.
What languages does Dr. Roger Karlin speak?
Dr. Roger Karlin speaks English.
How do patients rate Dr. Roger Karlin in reviews?
62 patients have reviewed Dr. Roger Karlin. The overall rating for this doctor is 4.77/5. They have a 4.65/5 rating for bedside manner and a 4.78/5 rating for wait time. You can read individual reviews and ratings on their profile.