NPPES file of Aug 9, 2026

Zachary Johnston, NP

Adult Health Nurse Practitioner · Walnut Creek, CA

Zachary Johnston, NP is an adult health nurse practitioner with a practice address in Walnut Creek, California, and NPI 1730075623, issued on Jun 16, 2025. Check the license (California 95035553, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1730075623
Name
Zachary Johnston
Credential
NP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
95035553 CA
Self-reported in NPPES; status is on the state search
Practice location
1450 Treat Blvd Ste 120A, Walnut Creek, CA 94597
Phone
(925) 296-7350
Enumerated
Jun 16, 2025
Record last updated
Oct 30, 2025
Medicare enrollment
Enrolled (PECOS I20251112003671); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest adult health nurse practitioner records → All 1,405 in California → Look up another NPI →

Also registered at 1450 Treat Blvd Ste 120A

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mariko Feuz, DOHospice and Palliative Medicine (Internal Medicine) Physician1912575853
  2. Levy Jo Manuntag, MDHospice and Palliative Medicine (Internal Medicine) Physician1932696846

Verify Zachary Johnston in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95035553    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. John Muir Physician NetworkWalnut Creek, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Zachary Johnston among 1,405 adult health nurse practitioner records in California

Zachary Johnston, NP is one of 1,405 adult health nurse practitioner records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 96% of them.

  • NPI issued2025 · 96% of these records are older, 2% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileYes · 31% of these records are
  • Graduated2024 · median 2013 among the 441 with a school on file
  • Record last updated2025 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Health Nurse Practitioner providers in California

There are 1,405 adult health nurse practitioner records in California.

All 1,405 in California → Every provider in Walnut Creek → Adult Health Nurse Practitioner nationwide →

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Jacqueline Alkire, NPWalnut Creek, CA 945961902890114
  2. Gwendolyn Cashman, N.P.Walnut Creek, CA 945981720057037
  3. Li Chen, N.P.Walnut Creek, CA 945981336232560
  4. Nancy Cook, NPWalnut Creek, CA 945961639314719
  5. Laura Davis, N.P.Walnut Creek, CA 945981982936068
  6. Sari Fredrickson, MS, NPWalnut Creek, CA 945961578565198
  7. Lauren Johnson, N.P.Walnut Creek, CA 945961538506126
  8. Tricia McNeal, AGNPWalnut Creek, CA 945981902299506

Common questions

What is Zachary Johnston, NP's NPI number?

Zachary Johnston, NP's National Provider Identifier (NPI) is 1730075623, issued on Jun 16, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Zachary Johnston, NP located?

The NPPES record lists a practice address at 1450 Treat Blvd Ste 120A, Walnut Creek, CA, 94597. Phone: (925) 296-7350. Providers update this record themselves, so call before visiting.

How can I verify Zachary Johnston, NP's license?

NPPES lists California license number 95035553, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.