Marcella Gannon, RN
NPI 1225976475 · Psychiatric/Mental Health Registered Nurse · Centennial, CO
Marcella Gannon, RN is a Psychiatric/Mental Health Registered Nurse provider in Centennial, CO (NPI 1225976475).
Provider details
- NPI number
- 1225976475
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- 0175321 (CO)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2026-03-21
- Last updated
- 2026-03-21
- Certified
- 2026-03-21
Frequently asked questions
- What is Marcella Gannon's NPI number?
- Marcella Gannon's National Provider Identifier (NPI) is 1225976475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcella Gannon's specialty?
- Marcella Gannon is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Marcella Gannon located?
- Marcella Gannon's practice location on file with NPPES is 382 E Highline Cir, Centennial, CO 80122-1018.
- What is Marcella Gannon's phone number?
- The practice phone number listed in the NPPES registry for Marcella Gannon is (303) 919-9282.
- Is Marcella Gannon's NPI active?
- Yes — Marcella Gannon's NPI (1225976475) is active in the NPPES registry as of the last update on 2026-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.