Maryellen Hernon, REGISTERED NURSE
NPI 1356547970 · Ambulatory Care Registered Nurse · Cambridge, MA
Maryellen Hernon, REGISTERED NURSE is a Ambulatory Care Registered Nurse provider in Cambridge, MA (NPI 1356547970).
Provider details
- NPI number
- 1356547970
- Entity type
- Individual
- Primary specialty
- Ambulatory Care Registered NurseNursing Service Providers
- Credential
- REGISTERED NURSE
- Sex
- Female
- Sole proprietor
- No
- License
- 181619 (MA)
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
19 yrs in NPPES 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
- 2007-06-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Maryellen Hernon's NPI number?
- Maryellen Hernon's National Provider Identifier (NPI) is 1356547970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryellen Hernon's specialty?
- Maryellen Hernon is listed in the NPPES registry with a primary specialty of Ambulatory Care Registered Nurse (Nursing Service Providers).
- Where is Maryellen Hernon located?
- Maryellen Hernon's practice location on file with NPPES is 1493 Cambridge St, Cambridge, MA 02139-1047.
- What is Maryellen Hernon's phone number?
- The practice phone number listed in the NPPES registry for Maryellen Hernon is (617) 665-1552.
- Is Maryellen Hernon's NPI active?
- Yes — Maryellen Hernon's NPI (1356547970) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.