Summary

Dr Welles graduated from the University of Graz,Karl-Franzens Univ of Graz Med Fac Austria in 1978. He works in New Hyde Park, NY and 4 other locations and specializes in Pediatrics. Dr Welles is affiliated with Long Island Jewish Medical Center, NORTHWELL HEALTH HOSPITAL, Cohen Childrens Medical Center, Katz Womens Hospital At Long Island Jewish Medical Center and KATZ WOMENS HOSPITAL AT NORTH SHORE UNIVERSITY HOSPITAL.

Quick Facts

  • 4
  • 48 years of experience
  • speaks Spanish, English
  • North Shore University Hospital
  • 3 written reviews
  • 1 specialty
  • 5 areas of expertise
  • 1 board certification
  • 5 hospital affiliations
  • 7 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr Mark Bernard Welles has 7 locations

Northwell Health Adolescent And Pediatric Medicine

410 Lakeville Rd Ste 108New Hyde Park, NY 11042
Mon8:30 am - 7:30 pm
Tue8:30 am - 7:30 pm
Wed8:30 am - 7:30 pm
Thu8:30 am - 7:30 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 10:00 am
Sun8:00 am - 10:00 am

General Pediatrics At Great Neck

225 Community Dr Ste 130Great Neck, NY 11021
Mon8:00 am - 7:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 7:00 pm
Thu8:00 am - 7:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Cohen Childrens Medical Center

26901 76th AveNew Hyde Park, NY 11040

Long Island Jewish Medical Center

27005 76th AveNew Hyde Park, NY 11040

Northwell Health Hospital

300 Community DrManhasset, NY 11030

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Dr Mark Bernard Welles
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Dr Mark Bernard WellesDr. Marguerite A. Costich, MDDr. Katherine A. Rosenwasser, MDDr. Thomas Joseph Connors, MD
PediatricsPediatricsPediatricsPediatrics
Accepts New Patients Accepts New Patients
48 Years of Experience 12 Years of Experience 13 Years of Experience 18 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Spanish, English Speaks Spanish, English
New Hyde Park , NYNew York , NYNew York , NYNew York , NY
Med School: University Of Graz Med School: Loyola University Chicago Stritch School Of Medicine Med School: Columbia University College Of Physicians & Surgeons Med School: Rutgers New Jersey Medical School
Current Profile
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Insurance Plans Accepted by Dr Mark Bernard Welles

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr Mark Bernard Welles has the following specialty

Specialty Expertise

Dr Mark Bernard Welles has the following 5 areas of expertise

  • Check-up
  • Immunization
  • Pediatric Diabetes
  • Physical
  • Vaccination

Certifications, License, & Education

48 Years Experience

Dr Mark Bernard Welles holds an expired medical license in the state of New York.

Medical License

Medical Doctor with an expired medical license in the state of New York that expired in 2026.

Education & Training

Residency

Completed their residency at North Shore University Hospital.

Medical School

Graduated from University Of Graz and Karl-Franzens Univ Of Graz Med Fac Austria in 1978.

NPI Number

Dr Welles' NPI number is 1295806297.

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Frequently Asked Questions

What languages does Dr Mark Bernard Welles speak?
Dr Mark Bernard Welles speaks Spanish and English.
Where is Dr Mark Bernard Welles's office located?
Dr Mark Bernard Welles's office is located at 410 Lakeville Rd Ste 108, New Hyde Park, NY, 11042.
How can I make an appointment with Dr Mark Bernard Welles?
You can find contact information for Dr Mark Bernard Welles here on Vitals.
Is Dr Mark Bernard Welles accepting new patients?
Dr Mark Bernard Welles has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr Mark Bernard Welles accept virtual/telehealth appointments?
Dr Mark Bernard Welles has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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