Cathlyn Sullivan, DO
NPI 1821525312 · Obstetrics & Gynecology Physician · Portland, ME
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathlyn Sullivan, DO is a Obstetrics & Gynecology Physician provider in Portland, ME (NPI 1821525312).
Provider details
- NPI number
- 1821525312
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- DOS-2164 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1319 Punahou StHonolulu, HI 96826-1001Phone: (808) 983-8559Fax: (808) 983-8989
Registry dates
- Enumerated
- 2017-05-16
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is Cathlyn Sullivan's NPI number?
- Cathlyn Sullivan's National Provider Identifier (NPI) is 1821525312, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathlyn Sullivan's specialty?
- Cathlyn Sullivan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Cathlyn Sullivan located?
- Cathlyn Sullivan's practice location on file with NPPES is 887 Congress St Ste 200, Portland, ME 04102-3166.
- What is Cathlyn Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Cathlyn Sullivan is (207) 771-5549.
- Does Cathlyn Sullivan accept Medicare?
- Cathlyn Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathlyn Sullivan's NPI active?
- Yes — Cathlyn Sullivan's NPI (1821525312) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.