Andrew Royce Armstrong III, MPAS, PA-C

  • Oxnard, CA
  • Physician assistant
NPI1306196316PAC ID7618219320
Medicare services, 2024
885
Medicare patients, 2024
218
Part D claims, 2024
353
MIPS score, 2024
74
Industry payments
$81
Practice address
2221 Wankel Way, Oxnard, CA 93030
Practice phone
Call (805) 641-6415
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Ventura Orthopedics

Oxnard, California

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Andrew Royce Armstrong III is a physician assistant in Oxnard, California

Andrew Armstrong practices at Ventura Orthopedics in Oxnard, California.

Andrew Armstrong's NPI, 1306196316, was assigned on September 17, 2012.

NPI and contact details
Medicare PAC ID
7618219320
NPI enumeration date
September 17, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(805) 641-6415
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
40
Medical school graduation
2012

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Andrew Royce Armstrong III practices at Ventura Orthopedics in Oxnard, California

Andrew Armstrong's primary practice is Ventura Orthopedics, at 2221 Wankel Way, Oxnard, CA 93030 in Ventura County. The practice phone is (805) 641-6415.

  • Ventura Orthopedics
    2221 Wankel Way, Oxnard, CA 93030 · Ventura CountyPhone(805) 641-6415

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Andrew Royce Armstrong III is affiliated with 2 sites of care and 1 medical group

Andrew Armstrong's primary practice is Ventura Orthopedics in Oxnard, California. The medical group on file is Ventura Orthopedics. Dmand AI also links Andrew Armstrong to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Andrew Armstrong

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Andrew Royce Armstrong III's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Andrew Armstrong practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Ventura OrthopedicsAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Andrew Royce Armstrong III is one of 11,482 physician assistants in California

Physician assistant is Andrew Armstrong's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Andrew Armstrong is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).

Specialties and state licenses

  • Physician assistantPrimarytaxonomy 363A00000X

Clinical focus

Dmand AI lists acute skin infection, arthritis, broken or dislocated ankle/ or foot, bursitis, carpal tunnel syndrome, chest wall injury, gout and hand joint or tendon inflammation among the conditions Andrew Armstrong treats.

Physician assistants near Andrew Armstrong

Counts of physician assistants 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

Andrew Royce Armstrong III billed Medicare for 885 services in 2024

CMS data shows 885 Medicare services from Andrew Armstrong across 16 procedure codes in 2024, for 218 Medicare patients. Medicare paid $45,575 for them.

Medicare services, 2024885
Medicare patients218
Paid by Medicare$45,575
Procedure codes16

Andrew Armstrong's Medicare services by type, 2024

  1. Office and hospital visits454
  2. Imaging257
  3. Surgery126
  4. Drugs given in the office48

Where Andrew Armstrong's Medicare services took place, 2024

  • In an office79990%
  • In a facility8610%

Andrew Armstrong compared with the California median for physician assistants, 2024

  • Andrew Armstrong
  • California median
Medicare services
885vs 2044.3 times
Medicare patients
218vs 1052.1 times
Part D claims
326vs 24334% above

Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.

Andrew Armstrong's most billed Medicare procedure codes, 2024

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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Andrew Royce Armstrong III treated 218 Medicare patients in 2024, average age 74

CMS counts 218 Medicare patients who saw Andrew Armstrong in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have arthritis, and 75% have high blood pressure. 22% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Andrew Armstrong's median patient age at 61, with 63% women.

Medicare patients, 2024218
Average age74
Average risk score1.40
Also on Medicaid22%

Andrew Armstrong's Medicare patients by age, 2024

Andrew Armstrong's Medicare patients by sex, 2024

  • Women15069%
  • Men6831%

Chronic conditions among Andrew Armstrong's Medicare patients, 2024

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes32%
  5. Ischemic heart disease29%
  6. Mood disorders27%
  7. Chronic kidney disease26%
  8. Osteoporosis26%

Share of Medicare patients with each condition. A patient can have several.

Andrew Armstrong's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 61

Patient panel by sex, all payers

  • Women63%
  • Men37%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Andrew Royce Armstrong III wrote 353 Medicare Part D claims in 2024

In 2024, Andrew Armstrong wrote 353 Medicare Part D claims for 130 patients. 100% of them were for generic drugs. CMS names the drug for 326 of them, across 5 drugs with 11 or more claims each, at $3,428 in total drug cost.

Part D claims, 2024353
Drugs named by CMS5
Total drug cost$3,428
Part D patients130

Andrew Armstrong's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Andrew Armstrong's Part D claims, 2024

  • Opioids5%18 of 353 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by Andrew Armstrong

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Andrew Royce Armstrong III scored 74 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 74 out of 100 for Andrew Armstrong for performance year 2024, reported as part of a group. Andrew Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Andrew Armstrong's MIPS scores, performance year 2024

  • 74of 100Final score
  • 31.9of 100Quality
  • 98of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 82of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Andrew Royce Armstrong III received $81 in industry payments from 2024 to 2025

CMS Open Payments shows 4 general payments to Andrew Armstrong from 4 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Vertex Pharmaceuticals Incorporated paid the most, $28.

General payments to Andrew Armstrong by program year, 2024 to 2025

Companies that paid Andrew Armstrong the most, 2024 to 2025

Share is of all general payments to this clinician.

See all payments to Andrew Armstrong

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Andrew Royce Armstrong III is board certified in certified physician assistant

Andrew Armstrong is a member of AAPA.

  1. Board certified in certified physician assistantNational Commission on Certification of Physician Assistants (NCCPA)

Source: Dmand AI Professional Profile Data

Sources for Andrew Royce Armstrong III's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Andrew Royce Armstrong III

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Andrew Royce Armstrong III's NPI number?

Andrew Royce Armstrong III's NPI number is 1306196316. It was assigned on September 17, 2012, and it is active in the NPI Registry.

What does Andrew Royce Armstrong III specialize in?

Andrew Royce Armstrong III is a physician assistant in Oxnard, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Andrew Royce Armstrong III practice?

Andrew Armstrong practices at 2221 Wankel Way, Oxnard, CA 93030. Andrew Armstrong's primary practice is Ventura Orthopedics in Oxnard, California. Dmand AI also links Andrew Armstrong to 1 group practice or clinic.

What is Andrew Royce Armstrong III's office phone number?

The practice phone on file for Andrew Armstrong is (805) 641-6415.

What medical group is Andrew Royce Armstrong III part of?

Andrew Armstrong is linked to Ventura Orthopedics.

Does Andrew Royce Armstrong III accept Medicare?

Yes. CMS data shows Andrew Armstrong billed Medicare for 885 services in 2024, and Andrew Armstrong accepts Medicare assignment.

What is Andrew Royce Armstrong III's MIPS score?

Andrew Armstrong's MIPS final score for performance year 2024 is 74 out of 100, reported as part of a group.

How many Medicare patients does Andrew Royce Armstrong III see?

CMS counts 218 Medicare patients who saw Andrew Armstrong in 2024, with an average age of 74.

Is Andrew Royce Armstrong III board certified?

Yes. Andrew Armstrong is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).

What services does Andrew Royce Armstrong III bill to Medicare?

In 2024, Andrew Armstrong's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and diagnostic imaging (73630).

Show 3 more questionsShow fewer questions

What drugs does Andrew Royce Armstrong III prescribe most?

In 2024 Medicare Part D data, Andrew Armstrong's most prescribed drugs by claims were Meloxicam, Celecoxib and Prednisone.

Has Andrew Royce Armstrong III received payments from drug or device companies?

CMS Open Payments shows $81 in general payments to Andrew Armstrong from 4 companies from 2024 to 2025. The largest total came from Vertex Pharmaceuticals Incorporated.

How long has Andrew Royce Armstrong III been practicing?

Andrew Armstrong graduated from medical school in 2012, 14 years ago.

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