Robert Cullen Johnston, OD
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 23600 El Toro Rd, Lake Forest, CA 92630
- Practice phone
- Call (800) 571-5202
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
National Vision, Inc.
Lake Forest, California
Find Robert Johnston's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Robert Cullen Johnston is an optometrist in Lake Forest, California
Robert Johnston practices at National Vision, Inc. in Lake Forest, California.
Robert Johnston's NPI, 1568501625, was assigned on February 5, 2007. Robert Johnston holds California license 10220T.
- NPI
- 1568501625NPI Registry (opens in a new tab)
- NPI enumeration date
- February 5, 2007
- NPI status
- Active
- Practice phone
- (800) 571-5202
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Robert Cullen Johnston practices at National Vision, Inc. in Lake Forest, California
Robert Johnston's primary practice is National Vision, Inc., at 23600 El Toro Rd, Lake Forest, CA 92630 in Orange County. The practice phone is (800) 571-5202.
- National Vision, Inc.23600 El Toro Rd, Lake Forest, CA 92630 · Orange CountyPhone(800) 571-5202
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Robert Cullen Johnston is affiliated with 1 site of care and 1 medical group
Robert Johnston's primary practice is National Vision, Inc. in Lake Forest, California. Dmand AI also links Robert Johnston to 1 medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Robert Cullen Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Robert Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| National Vision, Inc. | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Robert Cullen Johnston is one of 7,206 optometrists in California
Optometrist is Robert Johnston's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Robert Johnston is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Robert Johnston
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Robert Cullen Johnston's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Robert Johnston's median patient age at 55, with 57% women.
Robert 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 55
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
Sources for Robert Cullen Johnston's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Robert Cullen 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 Robert Cullen Johnston's NPI number?
Robert Cullen Johnston's NPI number is 1568501625. It was assigned on February 5, 2007, and it is active in the NPI Registry.
What does Robert Cullen Johnston specialize in?
Robert Cullen Johnston is an optometrist in Lake Forest, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Robert Cullen Johnston practice?
Robert Johnston practices at 23600 El Toro Rd, Lake Forest, CA 92630. Robert Johnston's primary practice is National Vision, Inc. in Lake Forest, California. Dmand AI also links Robert Johnston to 1 medical group.
What is Robert Cullen Johnston's office phone number?
The practice phone on file for Robert Johnston is (800) 571-5202.
What is Robert Cullen Johnston's medical license number?
Robert Johnston holds California license 10220T.
How long has Robert Cullen Johnston been practicing?
Robert Johnston's NPI was assigned in 2007.
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