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

MS. Mary C. Chang, DO

Individual provider Obstetrics Physician · NPI 1407870389

MS. Mary C. Chang, DO is an Obstetrics Physician in Haverhill, Massachusetts. Licensed in Massachusetts and Texas. Registered with an NPI since 2006.

Licensed in
MA, TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

600 Primrose St Ste 202
Haverhill, MA 01830-2659
Phone: (978) 556-1000
Fax: (978) 556-0094
Show map & directions

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

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 243524 (MA)
Obstetrics Physician Taxonomy 207VX0000X · Licence K1390 (TX)

Record details

NPI number1407870389
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 26, 2006
Last updated in NPPESOctober 18, 2021
Certification dateOctober 18, 2021