Our Doctors & Staff


Team Picture

The Baltimore Uptown Dentist Team

K. Michael Murphy, DDS, MS

Prosthodontist/Dentist in Baltimore, MD

Dr. K. Michael Murphy & Associates, LLC

Baltimore, MD Cosmetic Dentist Dr. K. Michael Murphy


Alexandra T. Welzel, DMD, FAGD

Dentist in Baltimore, MD

Dr. K. Michael Murphy & Associates, LLC

Baltimore, MD Cosmetic Dentist Dr. K. Michael Murphy

  • Graduated from a Dental School, RWTH Aachen, Germany in 1992.
  • Completed research and Doctoral Thesis, Magna Cum Laude, at the Department of Oral-Maxillofacial Surgery at the RWTH Aachen, Germany in 1994, where she was awarded Doctor Of Medical Dentistry (Dr. med. dent.).
  • Private practice in Germany until 1996.
  • Completed 3 years of residency in Advanced General Dentistry with enrollment in the MSOB program at the University of Maryland Baltimore College of Dental Surgery and received her American Dental License in 1998.
  • Is an active member of dental organizations including the American Dental Association and the Academy of General Dentistry.
  • Is committed to her patients and strives to help them feel and look their best through comfort, compassion and clinical excellence.


Baltimore, MD hygienist team of K. Michael Murphy and Associates

Anna - Office Manager

Anna has been in the dental field for 30 plus years. She also worked as a trainer for a dental computer company before coming to Dr. Murphy’s in 2000. She is married with 3 children and 4 grandchildren. First love (after husband), playing with the grandchildren. Then working in the yard and just being outside. Believes “Home is where your story begins…"

Joellen - Marketing/Patient Care Coordinator

Joellen DeBoy has been working in the dental industry for over 25 years and has been with Dr. Murphy and Associates for 15 years. She multi-functions as a coordinator for both the patient recare system as well as internal and external marketing. She and her husband, David, reside in Owings Mills and have three grown children as well as two terrific grandsons, Christian and Camden. When not enjoying time with family, Joellen and David enjoy travel, cooking, antique shopping, gardening and spending time with friends.


Sherri - Hygienist

Sherri was born in Baltimore and graduated from CCB and UMAB with a BS degree in Dental Hygiene. She has been practicing dental hygiene for 34yrs and has been with Dr Murphy for 20 years. She is married and has two beautiful young adult daughters aged 20 and 21. In her spare time, Sherri likes to swim, bike, run and practice yoga. She has been participating in triathlons from sprint distance to full distance Ironman's for the last 13 years. You can blame Dr Murphy for her love of triathlon! Sherri has been participating in triatholons since 2006 and has
been a certified integrative health coach since May 2021.

Sandy - Hygienist

Hi, my name is Sandy Sheffler and I have been a registered dental hygienist (RDH) in the State of Maryland, since 1973. I have been working for Dr. Murphy and Associates since 2004. Working in this office is my “dream job”. I am able to help my patients achieve not only dental but overall health as well. In order to do this, a dental office needs to give their hygienists plenty of time to each and every patient. I have established wonderful relationships with my patients and really know how they progress in their efforts to have a healthy mouth and body. One of the tools I’ve had available to me in the last 30 years is a microscope where I can identify the harmful bacteria that causes periodontal disease and tooth decay. I am now working with physicians that work with cardiac patients together we are helping patients with heart disease. We eliminate not only their harmful bacteria but lower their inflammation as well. Both heart disease and periodontal disease are inflammatory diseases.

On a personal side, I have a wonderful adult son and just as wonderful daughter-in-law. They live in Baltimore so I do get to see them often. I have two hysterically funny little white dogs, Sophie and Lucy. They are fabulous companions, both rescues.

I have a vacation house in North Carolina on a lake. I have a boyfriend down there who has a boat and when we can we are on the lake fishing. I love to cook, sew, most crafts including beads and love home improvement projects and home decorating. I have a very happy, full life.

I love being a dental hygienist and hope to see you in the office soon.

Jan - Hygienist

Bio coming soon!


Tonia - Dental Assistant

Bio coming soon!

Reanna - Dental Assistant

Bio coming soon!

Heather- Dental Assistant

Bio coming soon!

Kenya- Certified Dental Assistants

Kenya has been working as a dental assistant for 15 years. She was born and raised here in Baltimore. In her off time she has a social media business where she makes and selss a variety of crafts, "Randoms by Kenya" (facebook and instagram). She enjoys quiet time at home but loves traveling more!

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9:00 am-6:00 pm


8:00 am-5:00 pm


8:00 am-3:00 pm


8:00 am-7:00 pm


9:00 am-3:00 pm





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