Ray Takaki Oyakawa, M.D.
Ophthalmology Physician · Torrance, CA
Ray Takaki Oyakawa, M.D. is an ophthalmology physician with a practice address in Torrance, California, and NPI 1467541938, issued on Oct 12, 2006. Check the license (California G44155, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ray Takaki Oyakawa
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G44155 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20911 Earl St, Torrance, CA 90503
- Phone
- (310) 792-1010
- Enumerated
- Oct 12, 2006
- Record last updated
- Jan 27, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (310) 792-1007
- Medicare enrollment
- Enrolled (PECOS I20111206000609); accepts Medicare assignment
- Medical or professional school
- Un Of California, Irvine, College Of Medicine, 1976
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 20911 Earl St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ray Takaki Oyakawa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G44155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average ophthalmology physician in 2024
359 Medicare Part D claims for 86 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of claims.
Most prescribed
- Latanoprost53 claims
- Timolol Maleate37 claims
- Prednisolone Acetate24 claims
- Lumigan23 claims
- Difluprednate22 claims
- Moxifloxacin21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 81.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Ray Takaki Oyakawa among 2,899 ophthalmology physician records in California
Ray Takaki Oyakawa, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1976 · median 2001 among the 1,907 with a school on file
- Record last updated2015 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Torrance → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Terry Alkana, MDTorrance, CA 905031770666307
- Carol Davis, M.D.Torrance, CA 905031629167531
- Stephen Dinsmore, M.D.Torrance, CA 905031891906707
- Ron Gallemore, MDTorrance, CA 905031912968496
- Michael Harwood, MDTorrance, CA 905031881782894
- Michael Heeg, M.D.Torrance, CA 905031972555142
- Shyun Jeng, M.D.Torrance, CA 905031154375566
- Arbi Khemichian, MDTorrance, CA 905031003056516
Common questions
What is Ray Takaki Oyakawa, M.D.'s NPI number?
Ray Takaki Oyakawa, M.D.'s National Provider Identifier (NPI) is 1467541938, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ray Takaki Oyakawa, M.D. located?
The NPPES record lists a practice address at 20911 Earl St, Torrance, CA, 90503. Phone: (310) 792-1010. Providers update this record themselves, so call before visiting.
How can I verify Ray Takaki Oyakawa, M.D.'s license?
NPPES lists California license number G44155, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ray Takaki Oyakawa, M.D. prescribe under Medicare Part D?
In 2024, Ray Takaki Oyakawa, M.D. had 359 Medicare Part D claims for 86 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Ray Takaki Oyakawa, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.