Darcy Calvin Ryan, OD
- Industry payments
- $685
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 5094 E Los Coyotes Diagonal, Long Beach, CA 90815
- Practice phone
- Call (562) 597-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hertzog Eye Associates a Medical Corporation
Long Beach, California
Find Darcy Ryan'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.
Darcy Calvin Ryan is an optometrist in Long Beach, California
Darcy Ryan practices at Hertzog Eye Associates a Medical Corporation in Long Beach, California.
Darcy Ryan's NPI, 1184690950, was assigned on February 23, 2006. Darcy Ryan holds California license 11208TPL.
- NPI
- 1184690950NPI Registry (opens in a new tab)
- NPI enumeration date
- February 23, 2006
- NPI status
- Active
- Practice phone
- (562) 597-3100
- 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
Darcy Calvin Ryan practices at Hertzog Eye Associates a Medical Corporation in Long Beach, California
Darcy Ryan's primary practice is Hertzog Eye Associates a Medical Corporation, at 5094 E Los Coyotes Diagonal, Long Beach, CA 90815 in Los Angeles County. The practice phone is (562) 597-3100.
- Hertzog Eye Associates a Medical Corporation5094 E Los Coyotes Diagonal, Long Beach, CA 90815 · Los Angeles CountyPhone(562) 597-3100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Darcy Calvin Ryan is affiliated with 2 sites of care and 1 medical group
Darcy Ryan's primary practice is Hertzog Eye Associates a Medical Corporation in Long Beach, California. Dmand AI also links Darcy Ryan to 1 group practice or clinic and 1 medical group, each 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 Darcy Calvin Ryan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Darcy Ryan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hertzog Eye Associates a Medical Corporation | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Darcy Calvin Ryan is one of 7,206 optometrists in California
Optometrist is Darcy Ryan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Darcy Ryan is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Darcy Ryan
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
Darcy Calvin Ryan's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Darcy Ryan's median patient age at 71, with 50% women.
Darcy Ryan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Darcy Calvin Ryan received $685 in industry payments in 2025
CMS Open Payments shows 13 general payments to Darcy Ryan from 6 drug and device companies in 2025. Food and beverage make up the largest share, 74% of the total. CooperVision Inc. paid the most, $394.
General payments to Darcy Ryan by kind, 2025 to 2025
- Food and beverage$50674%
- Travel and lodging$17926%
Companies that paid Darcy Ryan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Darcy Calvin Ryan'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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Darcy Calvin Ryan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Darcy Calvin Ryan's NPI number?
Darcy Calvin Ryan's NPI number is 1184690950. It was assigned on February 23, 2006, and it is active in the NPI Registry.
What does Darcy Calvin Ryan specialize in?
Darcy Calvin Ryan is an optometrist in Long Beach, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Darcy Calvin Ryan practice?
Darcy Ryan practices at 5094 E Los Coyotes Diagonal, Long Beach, CA 90815. Darcy Ryan's primary practice is Hertzog Eye Associates a Medical Corporation in Long Beach, California. Dmand AI also links Darcy Ryan to 1 group practice or clinic and 1 medical group.
What is Darcy Calvin Ryan's office phone number?
The practice phone on file for Darcy Ryan is (562) 597-3100.
What is Darcy Calvin Ryan's medical license number?
Darcy Ryan holds California license 11208TPL.
Has Darcy Calvin Ryan received payments from drug or device companies?
CMS Open Payments shows $685 in general payments to Darcy Ryan from 6 companies from 2025 to 2025. The largest total came from CooperVision Inc.
How long has Darcy Calvin Ryan been practicing?
Darcy Ryan's NPI was assigned in 2006.
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