Summary

Dr. John Allen specializes in internal medicine, focusing on the comprehensive care of adult patients. He earned his medical degree from the University of Maryland School of Medicine and completed his residency training at the University of Maryland Medical Center. With 12 years of experience in practice, Dr. Allen brings extensive knowledge to diagnosing and treating a wide range of medical conditions affecting adults.

Dr. Allen practices at multiple locations throughout the Baltimore and Towson area, including the University of Maryland Medical Center and Saint Joseph Medical Center. He commonly treats patients with type 2 diabetes and high blood pressure, helping them manage these chronic conditions effectively. His practice also includes preventive care services such as flu vaccinations and pneumococcal vaccines to protect patients from serious infections.

AI-generated from data on this provider profile.

Quick Facts

  • 12 years of experience
  • 34 insurance plans accepted
  • University Of Maryland Medical Center
  • 1 specialty
  • 1 board certification
  • 3 office locations
  • Male

Office Locations

Dr. John Charles Allen has 3 locations

University Of Maryland Medical Center

22 S Greene StBaltimore, MD 21201

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Dr. John Charles Allen, MDDavid Peyser, PA-CDr. Eric Carr, MDDr. Maria Munoz, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
4.5 
12 Years of Experience 30 Years of Experience 25 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English Speaks Spanish, English
Baltimore , MDBaltimore , MDOwings Mills , MDColumbia , MD
Med School: University Of Maryland School Of Medicine Med School: Physician Assistant Degree from Arcadia University Med School: University Of Maryland School Of Medicine Med School: Universidad Iberoamericana School of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Charles Allen

  • AARP
  • Aetna
  • Aetna - Medicare
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - EPO
  • Blue Cross Blue Shield - Federal Employees Program
  • CareFirst Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield - HMO
  • CareFirst Blue Cross Blue Shield - PPO
  • CareFirst BlueCross BlueShield
  • CareFirst BlueCross BlueShield - Medicaid (Managed)
  • CareFirst BlueCross BlueShield - Medicare
  • Cigna
  • Geisinger Health Plan
  • Humana
  • Humana - HMO
  • Jai Medical Systems
  • Johns Hopkins Employer Health Programs
  • Kaiser Permanente
  • Maryland Physicians Care
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicaid (Managed)
  • Medicare - Medicare
  • Meritain Health
  • Priority Partners
  • Riverside Health
  • Riverside Health - Medicaid (Managed)
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • University of Maryland Health Partners

Medical Specialties

Dr. John Charles Allen has the following specialty

Certifications, License, & Education

12 Years Experience

MEDICAL LICENSE

Medical Doctor, Maryland, 2026, Active

EDUCATION & TRAINING

Residency

University Of Maryland Medical Center

Medical School

University Of Maryland School Of MedicineGraduated in 2014

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Frequently Asked Questions

Does Dr. John Allen accept my insurance?
You can see the insurance plans that Dr. John Allen accepts on their Vitals profile.
Does Dr. John Allen accept virtual/telehealth appointments?
Dr. John Allen has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. John Allen's office located?
Dr. John Allen's office is located at 22 S Greene St, Baltimore, MD, 21201.
How can I make an appointment with Dr. John Allen?
You can find contact information for Dr. John Allen here on Vitals.
Is Dr. John Allen accepting new patients?
Dr. John Allen has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.

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