William James Semmel, OD
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2013
- 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 William Semmel'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.
William James Semmel is an optometrist in Lake Forest, California
William Semmel practices at National Vision, Inc. in Lake Forest, California.
William Semmel's NPI, 1710220934, was assigned on April 5, 2013. William Semmel holds Pennsylvania license OET009111.
- NPI
- 1710220934NPI Registry (opens in a new tab)
- NPI enumeration date
- April 5, 2013
- 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
William James Semmel practices at National Vision, Inc. in Lake Forest, California
William Semmel'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
William James Semmel is affiliated with 2 sites of care
William Semmel's primary practice is National Vision, Inc. in Lake Forest, California. Dmand AI also links William Semmel to 1 physician office, 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 William James Semmel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Semmel 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 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
William James Semmel is one of 7,206 optometrists in California
Optometrist is William Semmel's primary specialty in the NPI Registry, under taxonomy code 152W00000X. William Semmel is licensed in Pennsylvania.
Specialties and state licenses
- Optometrist, PennsylvaniaPrimary
Optometrists near William Semmel
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
William James Semmel's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts William Semmel's median patient age at 68, with 55% women.
William Semmel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women55%
- Men41%
Source: Dmand AI Patient Panel Data
Sources for William James Semmel'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 William James Semmel
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William James Semmel's NPI number?
William James Semmel's NPI number is 1710220934. It was assigned on April 5, 2013, and it is active in the NPI Registry.
What does William James Semmel specialize in?
William James Semmel is an optometrist in Lake Forest, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does William James Semmel practice?
William Semmel practices at 23600 El Toro Rd, Lake Forest, CA 92630. William Semmel's primary practice is National Vision, Inc. in Lake Forest, California. Dmand AI also links William Semmel to 1 physician office.
What is William James Semmel's office phone number?
The practice phone on file for William Semmel is (800) 571-5202.
What is William James Semmel's medical license number?
William Semmel holds Pennsylvania license OET009111.
How long has William James Semmel been practicing?
William Semmel's NPI was assigned in 2013.
Selling to optometrist practices?
See optometrists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card