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Dr. Ryan H Nakasone , DC, PA-C

Physician Assistant • Oxnard, CA

Active NPI 1043207459 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

1901 Outlet Center Dr Ste 210
Oxnard, CA 930360666

Call 8059830425 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1901 Outlet Center Dr Ste 210

Oxnard, CA 930360666

Telephone 8059830425
Fax 8059830414
Before You Book

Paying without insurance? Prepare a cost-estimate request

Ask about interpreters and office accessibility

Organization at the Same NPPES Address or Phone
California Coast Physicians, Inc. Facility NPI 1063002061

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Link Neuroscience Institute Pc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Stanford University School Of Medicine

Graduation Year

2012

What Public CMS Data Show

These CMS figures cover limited populations and published records; they are not quality ratings or medical advice.

Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.

Medicare-allowed amount

About $23,804 in 2022

The total amount Medicare approved for these services in 2022. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.

Paid by Medicare

About $17,958 in 2022

The part of the Medicare-allowed amount that Medicare itself paid in 2022, after patients' deductibles and coinsurance.

The gap between the allowed amount and this number is roughly what patients and their other insurance paid.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.

30-day fills

4,596 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$325,236 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

It shows the total spending on drugs this clinician prescribed, not what any one patient paid.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $1,221.73 across 44 records.

By nature of payment

  • Food and Beverage: $1,221.73 across 44 records.

Reporting-company totals (3 largest of 15)

  • ABBVIE INC.: $276.63 across 12 records.
  • Medtronic, Inc.: $269.88 across 4 records.
  • VERTEX PHARMACEUTICALS INCORPORATED: $152.64 across 3 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

14 years (graduated 2012)

CMS Doctors and Clinicians data list 2012 as the year this clinician finished professional school.

It tells you roughly how long ago the clinician finished school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Nakasone has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Nakasone as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

Medicare pays for these items and services only when they are ordered by an eligible clinician.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Oxnard and California

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 95% of clinicians listed under Physician Assistant in Oxnard, CA (2024, 37 clinicians with data). Median for this group: 474. Middle half: 221 to 1,455.

More Part D prescriptions than 95% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.

Part D drug cost

A higher Part D drug cost than 85% of clinicians listed under Physician Assistant in Oxnard, CA (2024, 37 clinicians with data). Median for this group: $27,474. Middle half: $3,428 to $151,172.

A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: $3,945. Middle half: $709 to $60,209.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Dr. Nakasone are from 2022.

69 active clinicians are listed under Physician Assistant with a practice address in Oxnard, CA (14,458 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Oxnard

10.1% of these 69 clinicians have the CMS telehealth indicator.

50.7% of these 69 clinicians are listed by CMS as accepting Medicare assignment.

CMS data by year

Changes may reflect reporting, coverage or privacy limits, not changes in care quality.

  • Medicare Part B services

    Medicare Part B services decreased 80% from 997 in 2017 to 202 in 2022.

    • 2017: 997
    • 2018: 1,112
    • 2019: 875
    • 2020: 308
    • 2022: 202

  • Medicare-allowed amount

    Medicare-allowed amount decreased 73% from $89,553 in 2017 to $23,804 in 2022.

    • 2017: $89,553
    • 2018: $100,500
    • 2019: $83,527
    • 2020: $30,939
    • 2022: $23,804

  • Paid by Medicare

    Paid by Medicare decreased 73% from $67,558 in 2017 to $17,958 in 2022.

    • 2017: $67,558
    • 2018: $73,716
    • 2019: $60,129
    • 2020: $19,345
    • 2022: $17,958

  • Medicare Part D prescriptions

    Medicare Part D prescriptions stayed about the same: 4,714 in 2020 and 4,451 in 2024.

    • 2020: 4,714
    • 2021: 4,244
    • 2022: 4,560
    • 2023: 4,611
    • 2024: 4,451

  • 30-day fills

    30-day fills stayed about the same: 4,940 in 2020 and 4,596 in 2024.

    • 2020: 4,940
    • 2021: 4,360
    • 2022: 4,658
    • 2023: 4,753
    • 2024: 4,596

  • Part D drug cost

    Part D drug cost varied from year to year: $333,636 in 2020 and $325,236 in 2024.

    • 2020: $333,636
    • 2021: $299,110
    • 2022: $423,716
    • 2023: $418,510
    • 2024: $325,236

  • Industry payments (Open Payments)

    Industry payments (Open Payments) decreased 54% from $2,656.13 in 2021 to $1,221.73 in 2025.

    • 2021: $2,656.13
    • 2022: $3,684.60
    • 2023: $4,575.68
    • 2024: $3,510.83
    • 2025: $1,221.73

Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 44 records totaling $1,221.73.

Manufacturer Payment Nature Product Type Amount ($)
VERTEX PHARMACEUTICALS INCORPORATED
Food and Beverage
In-kind items and services
 JOURNAVX General $101.57
Medtronic, Inc.
Food and Beverage
In-kind items and services
 INCEPTIV General $100.42
Medtronic, Inc.
Food and Beverage
In-kind items and services
 INCEPTIV General $99.03
Medtronic, Inc.
Food and Beverage
In-kind items and services
 INCEPTIV General $54.55
SPR Therapeutics, Inc
Food and Beverage
Cash or cash equivalent
 SPRINT PNS System General $45.90
SPR Therapeutics, Inc
Food and Beverage
Cash or cash equivalent
 SPRINT PNS System General $34.27
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $33.52
Globus Medical, Inc.
Food and Beverage
Cash or cash equivalent
 Senza General $32.70
Boston Scientific Corporation
Food and Beverage
In-kind items and services
 Intracept General $30.22
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $29.32
ABBVIE INC.
Food and Beverage
In-kind items and services
 QULIPTA General $29.14
VERTEX PHARMACEUTICALS INCORPORATED
Food and Beverage
In-kind items and services
 JOURNAVX General $27.39
ABBVIE INC.
Food and Beverage
In-kind items and services
 QULIPTA General $26.31
ABBVIE INC.
Food and Beverage
In-kind items and services
 BOTOX General $26.08
ABBVIE INC.
Food and Beverage
In-kind items and services
 QULIPTA General $25.20
BIOTRONIK NRO, Inc.
Food and Beverage
In-kind items and services
 Prospera General $24.50
Globus Medical, Inc.
Food and Beverage
Cash or cash equivalent
 Senza General $24.25
VERTEX PHARMACEUTICALS INCORPORATED
Food and Beverage
In-kind items and services
 — General $23.68
Fidia Pharma USA Inc.
Food and Beverage
In-kind items and services
 HYMOVIS General $22.14
BIOTRONIK NRO, Inc.
Food and Beverage
In-kind items and services
 Prospera General $21.57
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $21.33
ABBVIE INC.
Food and Beverage
In-kind items and services
 UBRELVY General $20.80
Azurity Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
 HORIZANT General $19.42
Boston Scientific Corporation
Food and Beverage
In-kind items and services
 Intracept General $19.21
ABBVIE INC.
Food and Beverage
In-kind items and services
 QULIPTA General $19.20

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

A reported payment does not necessarily indicate wrongdoing; clinicians can dispute a record with CMS.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2022.

CMS Part B · Data Year 2022
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2021 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2022; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
202 114 $225.00 $117.84

Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 1,027 29,199 $26,963.97 118
Gabapentin Gabapentin 369 12,332 $3,726.13 55
Oxycodone Hcl Oxycodone Hcl 362 9,662 $6,423.40 58
Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen 296 8,024 $8,729.63 41
Pregabalin Pregabalin 263 8,369 $4,613.80 62
Belbuca Buprenorphine Hcl 199 5,970 $123,454.21 40
Tramadol Hcl Tramadol Hcl 196 5,544 $1,546.08 38
Buprenorphine Buprenorphine 185 5,243 $42,840.27 55
Cyclobenzaprine Hcl Cyclobenzaprine Hcl 146 4,112 $449.12 27
Tizanidine Hcl Tizanidine Hcl 110 3,158 $817.24 22
Ibuprofen Ibuprofen 107 3,292 $677.18 22
Baclofen Baclofen 102 3,802 $757.99 24
Diclofenac Sodium Diclofenac Sodium 80 2,175 $1,685.31 20
Carisoprodol Carisoprodol 77 2,200 $429.69 16
Hydromorphone Hcl Hydromorphone Hcl 76 1,996 $966.97 14
Acetaminophen-Codeine Acetaminophen With Codeine 75 2,002 $1,205.42 15
Duloxetine Hcl Duloxetine Hcl 74 2,460 $647.70 12
Meloxicam Meloxicam 71 2,351 $86.18 15
Lidocaine Lidocaine 68 1,905 $7,190.03 18
Morphine Sulfate Er Morphine Sulfate 57 1,461 $1,046.57 —
Methocarbamol Methocarbamol 49 1,424 $367.82 13
Methadone Hcl Methadone Hcl 48 1,043 $785.73 —
Nortriptyline Hcl Nortriptyline Hcl 44 1,800 $255.93 —
Morphine Sulfate Morphine Sulfate 42 1,213 $1,264.06 —
Celecoxib Celecoxib 40 1,200 $506.57 —

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-04-24
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

License # reported to NPPES CA PA22126

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Chiropractor

NUCC Taxonomy Code: 111N00000X

License # reported to NPPES CA DC-24909

A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - PHYSICIAN ASSISTANT

Medicare Enrollment ID

I20130827000955

Enrollment State Jurisdiction

CA

PECOS Control ID

1850284472

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Link Neuroscience Institute Pc

1901 Outlet Ctr Dr, Oxnard, CA 930360666

Phone: 8059830425

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

7 listed
NPI 1386096345

Doctor of Medicine (M.D.)

Dr. Richard Brand , MD

Internal Medicine

NPI 1770527608

Doctor of Medicine (M.D.)

Michelle Fishman , PA-C

Physician Assistant

NPI 1689838609

Physician Assistant (Certified)

Akshay Gupte , MBBSMPH

Neurological Surgery

NPI 1831416049
Dr. Erika Lan , DO

Psychiatry & Neurology - Neurology

NPI 1518490804

Doctor of Osteopathic Medicine (D.O.)

Tessa Shuler , FNP-C

Internal Medicine

NPI 1104537638

Family Nurse Practitioner (Certified)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
📍
Updated Practice Location March 31, 2026

Registered at 1901 OUTLET CENTER DR STE 210, OXNARD, CA 930360666 (Tel: 8059830425)

📍
Updated Business Mailing Address March 31, 2026

Registered at 1901 OUTLET CENTER DR STE 210, OXNARD, CA 930360666 (Tel: 8059830425)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 31, 2026

Physician Assistant (license number reported to NPPES: CA PA22126)

✅
NPI Profile Active April 07, 2016

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) April 07, 2016

Registered at 1100 PASEO CAMARILLO, CAMARILLO, CA 930106073 (Tel: 8058955984)

📍
Business Mailing Address (Initial Record) April 07, 2016

Registered at 1100 PASEO CAMARILLO, CAMARILLO, CA 930106073 (Tel: 8058955984)

👤
Provider Name / Credentials (Initial Record) April 07, 2016

Recorded as RYAN NAKASONE, D.C., P.A.-C

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 07, 2016

Chiropractor (license number reported to NPPES: CA DC-24909)

🟢
Initial NPI Registration & Enumeration September 30, 2005

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1043207459
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 30, 2005
Last Update: April 24, 2026
Sole Proprietor: Yes
Update or Correct Profile

Other Physician Assistants in Oxnard

All Physician Assistants in Oxnard

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Directory navigation, in NPI number order.

Mailing Address

1901 Outlet Center Dr Ste 210

Oxnard, CA 930360666

Phone: 8059830425

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.