Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Ann S Mercer, MD

Individual provider Internal Medicine Physician · NPI 1811913502

Dr. Ann S Mercer, MD is an Internal Medicine in Las Cruces, New Mexico. Graduated from University of Puerto Rico School of Medicine in 1978, 48 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in New Mexico.

Years since qualifying
48
Trained at
University of Puerto Rico School of Medicine
Licensed in
NM
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2801 Missouri Ave Ste 12
Las Cruces, NM 88011-5075
Phone: (575) 522-6900
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 84-79 (NM)

Record details

NPI number1811913502
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 14, 2006
Last updated in NPPESMarch 15, 2022
Certification dateMarch 1, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
Graduated 1978 (48 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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