Kjersten Johnsen, APN
NPI 1407172588 · Psychiatric/Mental Health Clinical Nurse Specialist · Watertown, MA
Kjersten Johnsen, APN is a Psychiatric/Mental Health Clinical Nurse Specialist provider in Watertown, MA (NPI 1407172588).
Provider details
- NPI number
- 1407172588
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- Yes
- License
- RN17902 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2010-04-14
- Last updated
- 2010-04-14
Frequently asked questions
- What is Kjersten Johnsen's NPI number?
- Kjersten Johnsen's National Provider Identifier (NPI) is 1407172588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kjersten Johnsen's specialty?
- Kjersten Johnsen is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kjersten Johnsen located?
- Kjersten Johnsen's practice location on file with NPPES is 290 Pleasant St, Watertown, MA 02472-2427.
- What is Kjersten Johnsen's phone number?
- The practice phone number listed in the NPPES registry for Kjersten Johnsen is (617) 571-9221.
- Is Kjersten Johnsen's NPI active?
- Yes — Kjersten Johnsen's NPI (1407172588) is active in the NPPES registry as of the last update on 2010-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.