Our Doctors & Staff


Updated 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.

Joel Danziger, DDS

Dentist in Baltimore, MD

Dr. K. Michael Murphy & Associates, LLC

Baltimore, MD Cosmetic Dentist Dr. K. Michael Murphy

Education and continuing education

Dr. Danziger received his doctorate from the University of Maryland Baltimore Dental School, where he was selected for a special clerkship in Oral Surgery. After receiving his D.D.S. degree, he completed an Advanced General Dentistry residency program at the University of Maryland. In his residency, Dr. Danziger received extensive experience in the more complicated aspects of dentistry. His training included surgical placement of implants and complex crown and bridge restoration.

Dr. Danziger is a native of Buffalo, NY. He, his wife Hindy, and their four sons and daughter now reside in Pikesville, MD. In his free time "which he does not have alot of," he likes spending time with his family, cooking, and playing sports with his kids.

Professional associations

Dr. Danziger regularly attends numerous hours in continuing education courses each year in order to stay well informed and up to date with the latest technological and treatment advances in dentistry. This ensures that he is always able to provide the highest levels of quality care to his patients. He is also actively involved in dental study clubs and professional affiliations, where he collaborates with his peers.



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.

Janie - Insurance and Patient Care Coordinator/HR

Janie lives on the eastern shore of Maryland. She has been working at our practice since 2008. When not working, Janie loves spending time with her Yorkie Lyla, reading books and going to the gym. Janie is married in June 2019.

Gwen - Front Office Manager

Gwen has been in the dental field for over 38 years. She has been a Lifetime Member of the American Association of Dental Office Managers (AADOM) since 2008 and is a Certified Dental Insurance Specialist. Her belief that "Patients are not an interruption of my day, they are the reason for it" makes her a great choice for our patient centered practice. She is also a Reiki II practitioner. When not at the office she enjoys spending time with her husband, adult children, family and friends. Having a creative outlet is essential to her, scrap booking and making handmade cards are favorites, because "you can brighten another's day with something handmade" Her favorite way to unwind is by spending time in nature.


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.

Chrissy Mizzell, RDH

Chrissy was born in Baltimore and graduated from Baltimore City Community College with a degree in Dental Hygiene. She has been a hygienist for 17 years. Her first 8 years , she worked with the microscope to identify harmful bacteria in the mouth. She is very excited to return to any office that uses the microscope to help improve oral health as well as overall general health. Chrissy and her husband Adam have two adult sons in their early 20s. She enjoys the outdoors, and especially the beach! Much of her outdoor time includes walks with her Jack Russell terrier Cooper.

Jan - Hygienist

Bio coming soon!

Kim - Hygienist

Kim was born in Baltimore and graduated from CCBC with an Associate in
Dental Hygiene. She has been in the dental field for 15 years, 11 as an
assistant and 4 as a hygienist. When not working, Kim enjoys spending
time with her 2 dogs, reading, attending sporting events and watching


Tonia - Dental Assistant

Bio coming soon!

Reanna - Dental Assistant

Bio coming soon!

Aisha - 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!

Stacie - Certified Dental Assistants

Bio coming soon

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Our Regular Schedule


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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