Maryland Primary Care Physicians at Pasadena offers high-quality, comprehensive medical care to patients of all ages, with emphasis on preventive care.

Our providers are board-certified in family practice, internal medicine, and pediatrics, with extensive experience in all aspects of primary care pediatrics, internal medicine and family health. More on our services and policies.

News and Announcements

  • We’re Making an Epic Change, So Please be Patient with Us.

    When you come to the office for your first appointment after October 1st, you will be asked to fill out new demographic and HIPAA paperwork as well as to scan your ID and insurance cards. This will ensure that your information is current and correct in our new Electronic Health Records system Epic. This additional paperwork may extend your check-in time, so we encourage you to complete the registration paperwork that can be found on our website’s Locations page of the office at which you are seen: “New Patient Information Sheet” under Patient Information/Forms/General before your appointment to help speed up this process.

    Initially, we must gather more information to enter into the new Epic system from patients when they call, which may result in longer hold times. We apologize if you have been affected by these delays and hope the process will smooth out soon.

    The excellent care and service we provide to you is not changing. It is just taking a little longer at first until we are up to speed on the new, more powerful and advanced system.

Featured Services



Reduce facial lines, frowns and wrinkles the non-surgical way. Our board certified doctors are experienced and trained in Botox treatment. Call today for a free consultation.
Click here for more information about Botox treatment.

Price Information: $15 per unit for first 25 units; $10 per unit after 25 units

Special Offer: Refer a new client and receive $50 off your next Botox treatment. Ask about our coupon cards to receive additional savings.

The only FDA-approved, preventative treatment for adults with chronic migraine. Several of our patients receiving injections have experienced significant decreases in the number and severity of their headaches. MPCP offers injections for chronic migraine at our Pasadena practice. Call 410-255-2700 for an appointment or click here to learn more.




The U.S. Dept. of Transportation (DOT) requires drivers of commercial motor vehicles to get physical examinations. Medical providers who give these exams must complete training from the National Registry of Certified Medical Examiners (NRCME) to understand the regulations and screen a driver for medical issues that can affect the driver’s ability to safely drive a commercial vehicle. Our MPCP Pasadena office has NRCME-certified clinicians, so if you need to have a DOT exam, please contact us to schedule it.

Office Info

24 Magothy Beach Road

Pasadena, Maryland 21122

Phone Numbers
Office Hours

Practice Manager:

Diana Kerner

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  • If you need immediate assistance, please call your practice directly. FOR MEDICAL EMERGENCIES, dial 911

Our Doctors

Garth A. Ashbeck, M.D.

  • In Practice Since: 1998
  • Medical Degree: Georgetown University School of Medicine
  • Residency Program: Memorial Medical Center
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Patricia Chambliss, M.D.

  • In Practice Since: 1992
  • Medical Degree: Case Western Reserve University
  • Residency Program: Highland Hospital
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Paul Chite, M.D.

  • In Practice Since: 2011
  • Medical Degree: American University of the Caribbean, Saint Maarten
  • Residency Program: Creighton University Medical Center
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Amy J. Cowart, D.O.

  • In Practice Since: 2000
  • Medical Degree: Michigan State University College of Osteopathic Medicine
  • Residency Program: University of Massachusetts
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Raygan L. Harris-Lofton, M.D.

  • In Practice Since: 2007
  • Medical Degree: University of Maryland School of Medicine
  • Residency Program: University of Maryland Medical Center
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Tracy A. Jansen, M.D.

  • In Practice Since: 1997
  • Medical Degree: Virginia Commonwealth University School of Medicine
  • Residency Program: Medical College of Georgia
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Trang M. Pham, M.D.

  • In Practice Since: 2002
  • Medical Degree: Jefferson Medical College
  • Residency Program: University of Maryland Medical Center
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Darnika Rhodes, M.D.

  • In Practice Since: 2015
  • Medical Degree: Wayne State University School of Medicine
  • Residency Program: Detroit Medical Center
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José C. Zarzuela, M.D.

  • In Practice Since: 1997
  • Medical Degree: University of Maryland School of Medicine
  • Residency Program: University of Maryland Medical System
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Medical Staff

Monica Erceg, CRNP

  • In Practice Since: 1997
  • Primary Specialty: Nurse Practitioner
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Abby Griffin, CRNP

  • In Practice Since: 2017
  • Primary Specialty: Nurse Practitioner
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Alyson Lang, M.M.S., PA-C

  • In Practice Since: 2013
  • Primary Specialty: Physician Assistant
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Lianna Stockeland, CRNP

  • In Practice Since: 2008
  • Primary Specialty: Nurse Practitioner
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Sarah A. Sullivan, CRNP

  • In Practice Since: 2004
  • Primary Specialty: Nurse Practitioner
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