Janet Markham, BSN, RN-BC
NPI 1508175977 · Adult Psychiatric/Mental Health Registered Nurse · Saint Louis, MO
Janet Markham, BSN, RN-BC is a Adult Psychiatric/Mental Health Registered Nurse provider in Saint Louis, MO (NPI 1508175977).
Provider details
- NPI number
- 1508175977
- Entity type
- Individual
- Primary specialty
- Adult Psychiatric/Mental Health Registered NurseNursing Service Providers
- Credential
- BSN, RN-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 144879 (MO)
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
15 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
- 2010-10-01
- Last updated
- 2010-10-01
Frequently asked questions
- What is Janet Markham's NPI number?
- Janet Markham's National Provider Identifier (NPI) is 1508175977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Markham's specialty?
- Janet Markham is listed in the NPPES registry with a primary specialty of Adult Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Janet Markham located?
- Janet Markham's practice location on file with NPPES is 4219 Laclede Ave, Saint Louis, MO 63108-2814.
- What is Janet Markham's phone number?
- The practice phone number listed in the NPPES registry for Janet Markham is (314) 286-4545.
- Is Janet Markham's NPI active?
- Yes — Janet Markham's NPI (1508175977) is active in the NPPES registry as of the last update on 2010-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.