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

Lily G Millen, DO

Individual provider Child & Adolescent Psychiatry Physician · NPI 1609404607

Lily G Millen, DO is a Child & Adolescent Psychiatry Physician in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2020.

Licensed in
MA
In the registry since
2020
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.

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Practice location Address checks out

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Child & Adolescent Psychiatry Physician (primary) Taxonomy 2084P0804X · Licence 1016231 (MA)

Record details

NPI number1609404607
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 27, 2020
Last updated in NPPESMay 2, 2025
Certification dateMay 2, 2025
Mailing address300 Longwood Ave, Boston, MA 02115-5724

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