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

John Richard Zwiener, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1518038496

John Richard Zwiener, MD is a Pathology in Carlsbad, New Mexico. Graduated from University of Texas Medical School at Houston in 1984, 42 years ago. Accepts Medicare assignment. Licensed in New Mexico.

Years since qualifying
42
Trained at
University of Texas Medical School at Houston
Licensed in
NM
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2430 W Pierce St
Carlsbad, NM 88220-3553
Phone: (648) 223-3070
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Pathology/Laboratory Medicine Physician (primary) Taxonomy 207ZP0105X · Licence 90 132 (NM)
Anatomic Pathology & Clinical Pathology Physician Taxonomy 207ZP0102X · Licence 90-132 (NM)

Record details

NPI number1518038496
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 13, 2006
Last updated in NPPESJune 11, 2025
Certification dateJune 11, 2025

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 1984 (42 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount