John Zimmerman, D.C., L.AC.
NPI 1417985920 · Family Nurse Practitioner · Diamond Bar, CA
John Zimmerman, D.C., L.AC. is a Family Nurse Practitioner provider in Diamond Bar, CA (NPI 1417985920).
Provider details
- NPI number
- 1417985920
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- D.C., L.AC.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 95212015 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Other Service Providers
Chiropractic 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
- 2006-06-30
- Last updated
- 2026-05-04
- Certified
- 2026-05-04
Frequently asked questions
- What is John Zimmerman's NPI number?
- John Zimmerman's National Provider Identifier (NPI) is 1417985920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zimmerman's specialty?
- John Zimmerman is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Zimmerman located?
- John Zimmerman's practice location on file with NPPES is 566 N Diamond Bar Blvd, Diamond Bar, CA 91765-1007.
- What is John Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for John Zimmerman is (909) 861-2611.
- Is John Zimmerman's NPI active?
- Yes — John Zimmerman's NPI (1417985920) is active in the NPPES registry as of the last update on 2026-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.