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

Dr. Cathlyn Sullivan, DO

Individual provider Obstetrics & Gynecology Physician · NPI 1821525312

Dr. Cathlyn Sullivan, DO is an Obstetrics/Gynecology in Portland, Maine. Qualified in 2017, 9 years ago. Practices with Mainehealth, a 2,615-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Hawaii and Maine.

Years since qualifying
9
Licensed in
HI, ME
In the registry since
2017
Specialties on file
4
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

887 Congress St Ste 200
Portland, ME 04102-3166
Phone: (207) 771-5549
Fax: (207) 771-7834
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 1319 Punahou St, Honolulu, HI 96826-1001 — (808) 983-8559

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence DO3886 (ME)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence DOS-2164 (HI)
Maternal & Fetal Medicine Physician Taxonomy 207VM0101X · Licence DO3886 (ME)
Obstetrics Physician Taxonomy 207VX0000X · Licence DO3886 (ME)

Record details

NPI number1821525312
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 16, 2017
Last updated in NPPESApril 1, 2025
Certification dateApril 1, 2025
Mailing address887 Congress St Ste 200, Portland, ME 04102-3166

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Other providers in Portland