Dr. Reginald Ariyasu, MD
- Medicare services, 2017
- 11
- Part D claims, 2021
- 149
- Insurance carriers
- 12
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 100 Stein Plz, Los Angeles, CA 90095-7065
- Practice phone
- Call (310) 825-3090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Ariyasu'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.
Dr. Reginald Ariyasu is an ophthalmologist in Los Angeles, California
Dr. Ariyasu practices in Los Angeles, California.
Dr. Ariyasu's NPI, 1285654939, was assigned on July 19, 2006. Dr. Ariyasu graduated from UC San Diego School of Medicine in 1987. Dr. Ariyasu holds California license G64282.
- NPI
- 1285654939NPI Registry (opens in a new tab)
- NPI enumeration date
- July 19, 2006
- NPI status
- Active
- Practice phone
- (310) 825-3090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Reginald Ariyasu's practice address is in Los Angeles, California
Dr. Ariyasu's practice address in the NPI Registry is 100 Stein Plz, Los Angeles, CA 90095-7065. The practice phone is (310) 825-3090.
- NPI Registry address100 Stein Plz, Los Angeles, CA 90095-7065Phone(310) 825-3090
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Reginald Ariyasu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ariyasu practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Ariyasu's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Reginald Ariyasu is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Ariyasu's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Ariyasu is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Ariyasu is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Ophthalmologists near Dr. Ariyasu
Counts of ophthalmologists 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
Dr. Reginald Ariyasu billed Medicare for 11 services in 2017
CMS data shows 11 Medicare services from Dr. Ariyasu across 1 procedure code in 2017, all of them office visits. Medicare paid $446 for them. Every service was in an office.
Dr. Ariyasu's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 152017: 1127%
Dr. Ariyasu compared with the California median for ophthalmologists, 2017
- Dr. Ariyasu
- California median
- Medicare services
- 11vs 1,07999% below
- Part D claims
- 149vs 61876% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Ariyasu's most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ariyasu and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Reginald Ariyasu's patients have a median age of 81
Across all payers, Dmand AI patient panel data puts Dr. Ariyasu's median patient age at 81, with 60% women.
Dr. Ariyasu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women60%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Reginald Ariyasu wrote 149 Medicare Part D claims in 2021
In 2021, Dr. Ariyasu wrote 149 Medicare Part D claims. They cover 4 drugs, with $3,995 in total drug cost. In 2020, CMS named 732 claims across 8 drugs.
Dr. Ariyasu's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 7322021: 14980%
Drugs named by CMS: 4 in 2021, 8 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Reginald Ariyasu has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Ariyasu, most recently AAO Fellow in 2011.
Awards and honors for Dr. Ariyasu
- 2011
- AAO Fellow
- Undated
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Reginald Ariyasu graduated from UC San Diego School of Medicine
Dr. Ariyasu graduated from UC San Diego School of Medicine in 1987. Dr. Ariyasu is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Reginald Ariyasu accepts plans from 12 insurance carriers
Dr. Ariyasu is in network with 12 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Aetna
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Blue Cross and Blue Shield of Kansas City
- +4 more carriersWith a free account
Plan types Dr. Ariyasu accepts, by number of carriers
- PPO9
- HMO6
- Medicare5
- EPO3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Reginald Ariyasu'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 |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. Reginald Ariyasu
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. Reginald Ariyasu's NPI number?
Dr. Reginald Ariyasu's NPI number is 1285654939. It was assigned on July 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Reginald Ariyasu?
Dr. Reginald Ariyasu is an ophthalmologist in Los Angeles, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Reginald Ariyasu practice?
Dr. Ariyasu practices at 100 Stein Plz, Los Angeles, CA 90095-7065.
What is Dr. Reginald Ariyasu's office phone number?
The practice phone on file for Dr. Ariyasu is (310) 825-3090.
What is Dr. Reginald Ariyasu's medical license number?
Dr. Ariyasu holds California license G64282.
Does Dr. Reginald Ariyasu accept Medicare?
Yes. CMS data shows Dr. Ariyasu billed Medicare for 11 services in 2017.
Is Dr. Reginald Ariyasu board certified?
Yes. Dr. Ariyasu is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Reginald Ariyasu bill to Medicare?
In 2017, Dr. Ariyasu's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Reginald Ariyasu go to medical school?
Dr. Ariyasu graduated from UC San Diego School of Medicine in 1987.
What drugs does Dr. Reginald Ariyasu prescribe most?
In 2021 Medicare Part D data, Dr. Ariyasu's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Brimonidine Tartrate.
How long has Dr. Reginald Ariyasu been practicing?
Dr. Ariyasu graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Reginald Ariyasu accept?
Dr. Ariyasu is in network with 12 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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