Ryan H. Nakasone, D.C., P.A.-C
Physician Assistant · Oxnard, CA
Ryan H. Nakasone, D.C., P.A.-C is a physician assistant with a practice address in Oxnard, California, and NPI 1043207459, issued on Sep 30, 2005. Check the license (California PA22126, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ryan H. Nakasone
- Credential
- D.C., P.A.-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- PA22126 CA
DC-24909 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1901 Outlet Center Dr Ste 210, Oxnard, CA 93036
- Phone
- (805) 983-0425
- Enumerated
- Sep 30, 2005
- Record last updated
- Apr 24, 2026
- Fax
- (805) 983-0414
- Medicare enrollment
- Enrolled (PECOS I20130827000955); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1901 Outlet Center Dr Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Akshay Gupte, M.B.B.S. M.P.H.Neurological Surgery Physician1831416049
- Melissa Vladimirov, PA-CPhysician Assistant1386260842
Verify Ryan H. Nakasone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA22126Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.5 times the Medicare Part D claims of the average physician assistant in 2024
4,549 Medicare Part D claims for 287 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 2,626 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen1,027 claims
- Gabapentin369 claims
- Oxycodone Hcl362 claims
- Oxycodone-Acetaminophen296 claims
- Pregabalin263 claims
- Belbuca199 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.
Industry payments in 2024: $3,472.25
135 payments; by number, the most common kind was food and beverage; the largest payer was Biotronik Nro, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Link Neuroscience Institute PCOxnard, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan H. Nakasone among 14,451 physician assistant records in California
Ryan H. Nakasone, D.C., P.A.-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 99% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2012 · median 2018 among the 7,214 with a school on file
- Record last updated2026 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
69 physician assistant records list a practice address in Oxnard
They are 69 of the 3,211 NPPES records with a practice address in Oxnard, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Oxnard → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Elisabeth Bertoline, PA-COxnard, CA 930361760636252
- Laura Craver, PA-COxnard, CA 930361972047728
- Tatsiana Daniels, PA-COxnard, CA 930361306356118
- Alison EnglishOxnard, CA 930361467049387
- Parvaneh Firozbakht, PAOxnard, CA 930361760451751
- Lace Granatelli, PA-COxnard, CA 930361811460769
- Joshua Hess, PA, MPAPOxnard, CA 930361891932539
- Gregory Huffman, PAOxnard, CA 930361306425715
Common questions
What is Ryan H. Nakasone, D.C., P.A.-C's NPI number?
Ryan H. Nakasone, D.C., P.A.-C's National Provider Identifier (NPI) is 1043207459, issued on Sep 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ryan H. Nakasone, D.C., P.A.-C located?
The NPPES record lists a practice address at 1901 Outlet Center Dr Ste 210, Oxnard, CA, 93036. Phone: (805) 983-0425. Providers update this record themselves, so call before visiting.
How can I verify Ryan H. Nakasone, D.C., P.A.-C's license?
NPPES lists California license number PA22126, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ryan H. Nakasone, D.C., P.A.-C prescribe under Medicare Part D?
In 2024, Ryan H. Nakasone, D.C., P.A.-C had 4,549 Medicare Part D claims for 287 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.