Dianna Holtz, RN
NPI 1144768938 · Psychiatric/Mental Health Registered Nurse · Ann Arbor, MI
Dianna Holtz, RN is a Psychiatric/Mental Health Registered Nurse provider in Ann Arbor, MI (NPI 1144768938).
Provider details
- NPI number
- 1144768938
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- 4704321630 (MI)
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
9 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
- 2017-02-01
- Last updated
- 2017-02-01
Frequently asked questions
- What is Dianna Holtz's NPI number?
- Dianna Holtz's National Provider Identifier (NPI) is 1144768938, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dianna Holtz's specialty?
- Dianna Holtz is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Dianna Holtz located?
- Dianna Holtz's practice location on file with NPPES is 110 N 4th Ave, Ann Arbor, MI 48104-5503.
- What is Dianna Holtz's phone number?
- The practice phone number listed in the NPPES registry for Dianna Holtz is (734) 544-3000.
- Is Dianna Holtz's NPI active?
- Yes — Dianna Holtz's NPI (1144768938) is active in the NPPES registry as of the last update on 2017-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.