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

Sidney Spragins Rehn, MD

Individual provider Pediatrics Physician · NPI 1023756616

Sidney Spragins Rehn, MD is a Pediatric Medicine in Boston, Massachusetts. Qualified in 2021, 5 years ago. Licensed in Massachusetts.

Years since qualifying
5
Licensed in
MA
In the registry since
2022
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

75 Francis St
Boston, MA 02115-6110
Phone: (617) 732-5500
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 1022467 (MA)

Record details

NPI number1023756616
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2022
Last updated in NPPESMarch 28, 2026
Certification dateMarch 28, 2026

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare

Other providers in Boston