Zachary Koester, DNP
NPI 1174332720 · Psychiatric/Mental Health Nurse Practitioner · Westmont, IL
Zachary Koester, DNP is a Psychiatric/Mental Health Nurse Practitioner provider in Westmont, IL (NPI 1174332720).
Provider details
- NPI number
- 1174332720
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP
- Sex
- Male
- Sole proprietor
- No
- License
- 209.031255 (IL)
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
1 yr 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
- 2025-01-07
- Last updated
- 2025-01-07
- Certified
- 2025-01-07
Frequently asked questions
- What is Zachary Koester's NPI number?
- Zachary Koester's National Provider Identifier (NPI) is 1174332720, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Koester's specialty?
- Zachary Koester is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Zachary Koester located?
- Zachary Koester's practice location on file with NPPES is 750 Oakmont Ln, Westmont, IL 60559-5551.
- What is Zachary Koester's phone number?
- The practice phone number listed in the NPPES registry for Zachary Koester is (877) 552-6672.
- Is Zachary Koester's NPI active?
- Yes — Zachary Koester's NPI (1174332720) is active in the NPPES registry as of the last update on 2025-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.