Janet Diffey, ANP-BC
NPI 1083990535 · Nurse Practitioner · Saint Louis, MO
Janet Diffey, ANP-BC is a Nurse Practitioner provider in Saint Louis, MO (NPI 1083990535).
Provider details
- NPI number
- 1083990535
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ANP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2011035322 (MO)
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
14 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
- 2011-10-28
- Last updated
- 2017-11-28
Frequently asked questions
- What is Janet Diffey's NPI number?
- Janet Diffey's National Provider Identifier (NPI) is 1083990535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Diffey's specialty?
- Janet Diffey is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Janet Diffey located?
- Janet Diffey's practice location on file with NPPES is 3722 Taft Ave, Saint Louis, MO 63116-4326.
- What is Janet Diffey's phone number?
- The practice phone number listed in the NPPES registry for Janet Diffey is (314) 752-9799.
- Is Janet Diffey's NPI active?
- Yes — Janet Diffey's NPI (1083990535) is active in the NPPES registry as of the last update on 2017-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.