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

Dr. Maryellen O'Connor, DC

Individual provider Chiropractor · NPI 1093804791

Dr. Maryellen O'Connor, DC is a Chiropractic in Waltham, Massachusetts. Graduated from New York Chiropractic College in 2007, 19 years ago. Practices with Patient First Chiropractic and Physical Therapy PC, a 3-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
19
Trained at
New York Chiropractic College
Licensed in
MA
In the registry since
2006
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

564 Main St
Waltham, MA 02452-5516
Phone: (781) 894-8880
Fax: (781) 894-1121
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 3132 (MA)

Record details

NPI number1093804791
Entity typeIndividual (Type 1)
GenderFemale
Credentials DC
Sole proprietorYes
NPI enumeratedOctober 12, 2006
Last updated in NPPESJuly 8, 2019

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolNEW YORK CHIROPRACTIC COLLEGE
Graduated 2007 (19 years in practice)
Group practice Patient First Chiropractic And Physical Therapy Pc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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