John Martens, APRN
NPI 1043412638 · Psychiatric/Mental Health Nurse Practitioner · Nashville, TN
John Martens, APRN is a Psychiatric/Mental Health Nurse Practitioner provider in Nashville, TN (NPI 1043412638).
Provider details
- NPI number
- 1043412638
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Male
- Sole proprietor
- No
- License
- APN0000005801 (TN)
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
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
- 2007-06-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Martens's NPI number?
- John Martens's National Provider Identifier (NPI) is 1043412638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Martens's specialty?
- John Martens is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Martens located?
- John Martens's practice location on file with NPPES is 221 Stewarts Ferry Pike, Nashville, TN 37214-3325.
- What is John Martens's phone number?
- The practice phone number listed in the NPPES registry for John Martens is (615) 902-7461.
- Is John Martens's NPI active?
- Yes — John Martens's NPI (1043412638) 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.