John Wayne Cowan, PA
- Medicare services, 2024
- 23
- Medicare patients, 2024
- 47
- Hospital affiliations
- 2
- Industry payments
- $46
- Medical group
- 1
- Practice address
- 4002 Vista Way, Oceanside, CA 92056
- Practice phone
- Call (760) 724-8411
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Cowan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John Wayne Cowan is a physician assistant in Oceanside, California
John Cowan practices at Sharp Tri-City Medical Center in Oceanside, California, part of Sharp HealthCare.
John Cowan's NPI, 1083706089, was assigned on September 28, 2006. John Cowan holds California license PA14430.
- NPI
- 1083706089NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345285680
- NPI enumeration date
- September 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 724-8411
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John Wayne Cowan practices at Sharp Tri-City Medical Center in Oceanside, California
John Cowan's primary practice is Sharp Tri-City Medical Center, at 4002 Vista Way, Oceanside, CA 92056 in San Diego County. The practice phone is (760) 724-8411.
- Sharp Tri-City Medical Center4002 Vista Way, Oceanside, CA 92056 · San Diego CountyPhone(760) 724-8411
Source: Dmand AI Affiliation Data
John Wayne Cowan is affiliated with 3 sites of care and 1 medical group
John Cowan's primary practice is Sharp Tri-City Medical Center in Oceanside, California, part of Sharp HealthCare. John Cowan is also affiliated with Scripps Memorial Hospital Encinitas. The medical group on file is Orthopaedic Specialists of North County. Dmand AI also links John Cowan to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John Wayne Cowan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Cowan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sharp Tri-City Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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John Wayne Cowan is one of 11,482 physician assistants in California
Physician assistant is John Cowan's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Cowan is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). John Cowan is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near John Cowan
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
John Wayne Cowan billed Medicare for 23 services in 2024
CMS data shows 23 Medicare services from John Cowan across 1 procedure code in 2024, for 47 Medicare patients. Medicare paid $3,035 for them. Every service was in a facility, such as a hospital, rather than an office.
John Cowan compared with the California median for physician assistants, 2024
- John Cowan
- California median
- Medicare services
- 23vs 20489% below
- Medicare patients
- 47vs 10555% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
John Cowan'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.
Need commercial claims for John Cowan?
Medicare shows one payer. Book a meeting to get commercial claims data for John Cowan and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
John Wayne Cowan treated 47 Medicare patients in 2024, average age 73
CMS counts 47 Medicare patients who saw John Cowan in 2024. The largest group is 65 to 74, with 29 patients. 75% of them have arthritis, and 70% have high cholesterol. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Cowan's median patient age at 68, with 52% women.
John Cowan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Cowan's Medicare patients by sex, 2024
- Women2757%
- Men2043%
Chronic conditions among John Cowan's Medicare patients, 2024
- Arthritis75%
- High cholesterol70%
- High blood pressure68%
- Anxiety28%
- Mood disorders28%
Share of Medicare patients with each condition. A patient can have several.
John Cowan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women52%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How John Wayne Cowan takes part in Medicare
John Cowan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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John Wayne Cowan received $46 in industry payments in 2025
CMS Open Payments shows 2 general payments to John Cowan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $46.
Companies that paid John Cowan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John Wayne Cowan is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for John Wayne Cowan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John Wayne Cowan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Wayne Cowan's NPI number?
John Wayne Cowan's NPI number is 1083706089. It was assigned on September 28, 2006, and it is active in the NPI Registry.
What does John Wayne Cowan specialize in?
John Wayne Cowan is a physician assistant in Oceanside, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John Wayne Cowan practice?
John Cowan practices at 4002 Vista Way, Oceanside, CA 92056. John Cowan's primary practice is Sharp Tri-City Medical Center in Oceanside, California, part of Sharp HealthCare. Dmand AI also links John Cowan to 1 group practice or clinic.
What is John Wayne Cowan's office phone number?
The practice phone on file for John Cowan is (760) 724-8411.
What is John Wayne Cowan's medical license number?
John Cowan holds California license PA14430.
Which hospitals is John Wayne Cowan affiliated with?
John Cowan practices at Sharp Tri-City Medical Center in Oceanside, California. John Cowan is also affiliated with Scripps Memorial Hospital Encinitas.
What medical group is John Wayne Cowan part of?
John Cowan is linked to Orthopaedic Specialists of North County.
Does John Wayne Cowan accept Medicare?
Yes. CMS data shows John Cowan billed Medicare for 23 services in 2024, and John Cowan accepts Medicare assignment.
How many Medicare patients does John Wayne Cowan see?
CMS counts 47 Medicare patients who saw John Cowan in 2024, with an average age of 73.
Is John Wayne Cowan board certified?
Yes. John Cowan is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 3 more questionsShow fewer questions
What services does John Wayne Cowan bill to Medicare?
In 2024, John Cowan's most billed Medicare services were surgery: bones and joints (27447).
Has John Wayne Cowan received payments from drug or device companies?
CMS Open Payments shows $46 in general payments to John Cowan from 1 company from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has John Wayne Cowan been practicing?
John Cowan graduated from medical school in 1997, 29 years ago.
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