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Dr. Zachary M. Johnston, MD

  • North Chicago, IL
  • Gastroenterologist
NPI1720449812
Publications
1
Affiliated sites
1
State license
1
Year NPI issued
2016
Practice address
3001 Green Bay Rd, North Chicago, IL 60064
Practice phone
Call (847) 688-1900
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Captain James A. Lovell Federal Health Care Center

VA Clinic / Health Facility · North Chicago, Illinois

See all 1 affiliations

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Dr. Zachary M. Johnston is a gastroenterologist in North Chicago, Illinois

Dr. Johnston practices at Captain James A. Lovell Federal Health Care Center in North Chicago, Illinois.

Dr. Johnston's NPI, 1720449812, was assigned on March 16, 2016. Dr. Johnston holds Virginia license 0101262981.

NPI and contact details
NPI
1720449812NPI Registry (opens in a new tab)
NPI enumeration date
March 16, 2016
NPI status
Active
Practice phone
(847) 688-1900
Professional email
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Personal email
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Mobile number
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Sex
Male

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data

Dr. Zachary M. Johnston practices at Captain James A. Lovell Federal Health Care Center in North Chicago, Illinois

Dr. Johnston's primary practice is Captain James A. Lovell Federal Health Care Center, at 3001 Green Bay Rd, North Chicago, IL 60064. The practice phone is (847) 688-1900.

  • Captain James A. Lovell Federal Health Care Center
    3001 Green Bay Rd, North Chicago, IL 60064Phone(847) 688-1900

Source: Dmand AI Affiliation Data

Dr. Zachary M. Johnston is affiliated with 1 site of care

Dr. Johnston's primary practice is Captain James A. Lovell Federal Health Care Center in North Chicago, Illinois. Dr. Johnston's employer is on file too: a government & correctional health.

Captain James A. Lovell Federal Health Care CenterVA Clinic / Health Facility · North Chicago, IllinoisPrimary
Parent health systemName with a free accountEmployer: government & correctional healthName with a free account
See Dr. Johnston's affiliation in Dmand AI

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Zachary M. Johnston's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnston practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Captain James A. Lovell Federal Health Care CenterAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Zachary M. Johnston is one of 771 gastroenterologists in Illinois

Gastroenterology is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Johnston is licensed in Virginia.

Specialties and state licenses

  • Gastroenterology, VirginiaPrimaryLicense 0101262981 · taxonomy 207RG0100X

Gastroenterologists near Dr. Johnston

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

771gastroenterologists in Illinois
4gastroenterologists in North Chicago

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Zachary M. Johnston's patients have a median age of 67

Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 67, with 18% women.

Dr. Johnston's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women18%
  • Men82%

Source: Dmand AI Patient Panel Data

Dr. Zachary M. Johnston has 1 publication on record

Dmand AI links 1 paper to Dr. Johnston in 2017. Dr. Johnston's most frequent co-author is Jenna N. Otter, MD.

Papers1

Dr. Johnston's most frequent co-authors

Recent publications by Dr. Johnston

See all 1 publications and co-authors

See who Dr. Johnston researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Johnston works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Sources for Dr. Zachary M. Johnston's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Zachary M. Johnston

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Zachary M. Johnston's NPI number?

Dr. Zachary M. Johnston's NPI number is 1720449812. It was assigned on March 16, 2016, and it is active in the NPI Registry.

What kind of doctor is Dr. Zachary M. Johnston?

Dr. Zachary M. Johnston is a gastroenterologist in North Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Zachary M. Johnston practice?

Dr. Johnston practices at 3001 Green Bay Rd, North Chicago, IL 60064. Dr. Johnston's primary practice is Captain James A. Lovell Federal Health Care Center in North Chicago, Illinois.

What is Dr. Zachary M. Johnston's office phone number?

The practice phone on file for Dr. Johnston is (847) 688-1900.

What is Dr. Zachary M. Johnston's medical license number?

Dr. Johnston holds Virginia license 0101262981.

How long has Dr. Zachary M. Johnston been practicing?

Dr. Johnston's NPI was assigned in 2016.

Does Dr. Zachary M. Johnston do research?

Dmand AI links 1 publication to Dr. Johnston.

Who does Dr. Zachary M. Johnston publish with?

Dr. Johnston's most frequent co-authors are Jenna N. Otter, MD (1 shared paper).

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