Karen Lea Arnold, PA

  • West Hills, CA
  • Physician assistant
NPI1407886070
Medicare services, 2024
61
Medicare patients, 2024
64
Part D claims, 2024
91
Hospital affiliations
1
Industry payments
$17
Practice address
7300 Medical Center Dr, West Hills, CA 91307
Practice phone
Call (818) 676-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCLA West Valley Medical Center

Hospital · West Hills, California

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Karen Lea Arnold is a physician assistant in West Hills, California

Karen Arnold practices at UCLA West Valley Medical Center in West Hills, California, part of University of California Health.

Karen Arnold's NPI, 1407886070, was assigned on July 3, 2006. Karen Arnold holds California license PA17895.

NPI and contact details
NPI enumeration date
July 3, 2006
NPI status
Active
Practice phone
(818) 676-4000
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
50
Medical school graduation
2002

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

Karen Lea Arnold practices at UCLA West Valley Medical Center in West Hills, California

Karen Arnold's primary practice is UCLA West Valley Medical Center, at 7300 Medical Center Dr, West Hills, CA 91307 in Los Angeles County. The practice phone is (818) 676-4000.

Source: Dmand AI Affiliation Data

Karen Lea Arnold is affiliated with 1 site of care and 2 medical groups

Karen Arnold's primary practice is UCLA West Valley Medical Center in West Hills, California, part of University of California Health. The medical group on file is UCLA Emergency Medicine. Dmand AI also links Karen Arnold to 1 more medical group, named with a free account.

See all 3 affiliations for Karen Arnold

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Karen Lea Arnold's practice

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

EHR by site
SiteEHR vendor and product
UCLA West Valley Medical CenterAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Karen Lea Arnold is one of 11,482 physician assistants in California

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

Specialties and state licenses

  • Physician assistant, CaliforniaPrimaryLicense PA17895 · taxonomy 363A00000X

Clinical focus

Dmand AI lists acute skin infection, bronchitis, lower back pain, minor injury to a limb and UTI among the conditions Karen Arnold treats.

Physician assistants near Karen Arnold

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

Karen Lea Arnold billed Medicare for 61 services in 2024

CMS data shows 61 Medicare services from Karen Arnold across 2 procedure codes in 2024, for 64 Medicare patients. Medicare paid $4,350 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202461
Medicare patients64
Paid by Medicare$4,350
Procedure codes2

Karen Arnold compared with the California median for physician assistants, 2024

  • Karen Arnold
  • California median
Medicare services
61vs 20470% below
Medicare patients
64vs 10539% below
Part D claims
27vs 24389% below

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

Karen Arnold'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

Karen Lea Arnold treated 64 Medicare patients in 2024, average age 71

CMS counts 64 Medicare patients who saw Karen Arnold in 2024. The largest group is 65 to 74, with 29 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 52% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Karen Arnold's median patient age at 40, with 49% women.

Medicare patients, 202464
Average age71
Average risk score1.25
Also on Medicaid52%

Karen Arnold's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Karen Arnold's Medicare patients by sex, 2024

  • Women4469%
  • Men2031%

Chronic conditions among Karen Arnold's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure73%
  3. Arthritis61%
  4. Depression36%
  5. Diabetes36%
  6. Mood disorders36%
  7. Anxiety33%
  8. Ischemic heart disease31%

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

Karen Arnold's patients across all payers

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

Patient panel by age, all payers

Median age 40

Patient panel by sex, all payers

  • Women49%
  • Men50%

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

Karen Lea Arnold wrote 91 Medicare Part D claims in 2024

In 2024, Karen Arnold wrote 91 Medicare Part D claims for 62 patients. 99% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $59 in total drug cost.

Part D claims, 202491
Drugs named by CMS2
Total drug cost$59
Part D patients62

Karen Arnold's Part D claims by kind of drug, 2024

  • Generic90 claims99%
  • Brand-name and other1 claims1%

Karen Arnold'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 Karen Arnold's Part D claims, 2024

  • Opioids29%26 of 91 claims
  • Antibiotics12%11 of 91 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 Karen Arnold

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

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Karen Lea Arnold received $17 in industry payments in 2024

CMS Open Payments shows 1 general payment to Karen Arnold from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Phathom Pharmaceuticals, Inc. paid the most, $17.

Companies that paid Karen Arnold the most, 2024 to 2024

Share is of all general payments to this clinician.

See all payments to Karen Arnold

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

Karen Lea Arnold is board certified in certified physician assistant

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

Source: Dmand AI Professional Profile Data

Sources for Karen Lea Arnold'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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)
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 Karen Lea Arnold

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

What is Karen Lea Arnold's NPI number?

Karen Lea Arnold's NPI number is 1407886070. It was assigned on July 3, 2006, and it is active in the NPI Registry.

What does Karen Lea Arnold specialize in?

Karen Lea Arnold is a physician assistant in West Hills, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Karen Lea Arnold practice?

Karen Arnold practices at 7300 Medical Center Dr, West Hills, CA 91307. Karen Arnold's primary practice is UCLA West Valley Medical Center in West Hills, California, part of University of California Health. Dmand AI also links Karen Arnold to 1 medical group.

What is Karen Lea Arnold's office phone number?

The practice phone on file for Karen Arnold is (818) 676-4000.

What is Karen Lea Arnold's medical license number?

Karen Arnold holds California license PA17895.

Which hospitals is Karen Lea Arnold affiliated with?

Karen Arnold practices at UCLA West Valley Medical Center in West Hills, California.

What medical group is Karen Lea Arnold part of?

Karen Arnold is linked to UCLA Emergency Medicine. Dmand AI links Karen Arnold to 1 more medical group.

Does Karen Lea Arnold accept Medicare?

Yes. CMS data shows Karen Arnold billed Medicare for 61 services in 2024.

How many Medicare patients does Karen Lea Arnold see?

CMS counts 64 Medicare patients who saw Karen Arnold in 2024, with an average age of 71.

Is Karen Lea Arnold board certified?

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

Show 4 more questionsShow fewer questions

What services does Karen Lea Arnold bill to Medicare?

In 2024, Karen Arnold's most billed Medicare services were emergency department visit (99284) and emergency department visit (99283).

What drugs does Karen Lea Arnold prescribe most?

In 2024 Medicare Part D data, Karen Arnold's most prescribed drugs by claims were Tramadol HCl and Diclofenac Sodium.

Has Karen Lea Arnold received payments from drug or device companies?

CMS Open Payments shows $17 in general payments to Karen Arnold from 1 company from 2024 to 2024. The largest total came from Phathom Pharmaceuticals, Inc.

How long has Karen Lea Arnold been practicing?

Karen Arnold graduated from medical school in 2002, 24 years ago.

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