Meet the Doctor

Dr. Marianne Day

Dr. Marianne Day

Dr. Day has been involved in dentistry for over 20 years. She started working for a local orthodontist as a dental assistant while attending New Mexico State University.

She grew up in Las Cruces, went to NMSU. She graduated from the University of Washington, Seattle, one of the first handful of women to do so. After continuing her education at the University of Maryland Advanced General Dentistry Residency (first woman resident), she served with the Public Health Service in Talihina, Oklahoma. As Chief of Staff of the Talihina Indian Hospital, she managed the hospital-based clinic, inpatient care and three outlying clinics, staffed with 3 dentists and 11 assistants. Her work received special ribbons and honors.

Returning to New Mexico to become the first woman dentist to practice in Las Cruces and one of the first five in the state, Dr. Day practiced as an associate and opened this practice in 1987.

She believes no one should feel pain or be uncomfortable in her hands and that everyone is entitled to the best and the latest modern dentistry has to offer, within their means.

Dr. Day has an interest in patients who have special concerns for their dental health. The oral environment influences physical and psychological health far more than ever realized. Not only can dentists have people looking and feeling good about themselves, but risks of heart diseases, stroke and premature births can be reduced. It is to her patients' good health does Dr. Day commit her talents as a dental professional.

Credentials and Memberships

  • Dental Organization for Conscious Sedation
  • American Dental Association
  • New Mexico State Dental Association
  • American Association of Women Dentists
  • L.D. Pankey Institute of Advanced Dental Education
  • American Academy of General Dentistry
  • New Mexico Academy of General Dentistry

Mesilla Valley Center for Dental Medicine

Appts: (575) 523-5589

Make an Appointment Now!

Dr. Marianne Day

Mesilla Valley Center for Dental Medicine

608 S. Alameda Blvd.

Las Cruces, NM 88005

General Info: (575) 523-5589

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Mesilla Valley Center for Dental Medicine Office Hours
  Morning Afternoon/Evening
Mon. 7am - 12pm 12pm - 4pm
Tue. 7am - 12pm 12pm - 4pm
Wed. 7am - 12pm 12pm - 4pm
Thu. 7am - 12pm 12pm - 4pm
Fri. 7am - 12pm 12pm - 4pm
Sat. Closed Closed
Sun. Closed Closed


Mesilla Valley Center for Dental Medicine, 608 S. Alameda Blvd., Las Cruces, New Mexico 88005 - (575) 523-5589
Dr. Marianne Day

Call for an Appointment!

(575) 523-5589

General Info: (575) 523-5589

or CLICK to appoint online!