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

Colleen Marilyn Sinnott, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1295239580

Colleen Marilyn Sinnott, MD is an Obstetrics/Gynecology in New Haven, Connecticut. Graduated from Harvard Medical School in 2022, 4 years ago. Practices with Yale University, a 2,618-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
4
Trained at
Harvard Medical School
Licensed in
CT
In the registry since
2018
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Long Wharf Dr Fl 2
New Haven, CT 06511-5991
Phone: (601) 820-3688
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 75 Francis St # 1-3608a, Boston, MA 02115-6110 — (617) 732-7801

Specialties & licences

Maternal & Fetal Medicine Physician (primary) Taxonomy 207VM0101X · Licence 70727 (CT)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence 70727 (CT)

Record details

NPI number1295239580
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 21, 2018
Last updated in NPPESSeptember 17, 2025
Certification dateSeptember 17, 2025

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 2022 (4 years in practice)
Group practice Yale University — 2618 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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