Chase Jonathan Whelan, PA-C
- Medicare patients, 2024
- 244
- Part D claims, 2024
- 130
- Hospital affiliations
- 1
- Industry payments
- $97
- Medical groups
- 4
- Practice address
- 4735 Hamilton Ave, San Jose, CA 95130
- Practice phone
- Call (626) 791-9004
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Action Urgent Care Inc
San Jose, California
Find Chase Whelan'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.
Chase Jonathan Whelan is a surgical physician assistant in San Jose, California
Chase Whelan practices at Action Urgent Care Inc in San Jose, California.
Chase Whelan's NPI, 1023590502, was assigned on August 31, 2018.
- NPI
- 1023590502NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638418312
- NPI enumeration date
- August 31, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 791-9004
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Chase Jonathan Whelan practices at Action Urgent Care Inc in San Jose, California
Chase Whelan's primary practice is Action Urgent Care Inc, at 4735 Hamilton Ave, San Jose, CA 95130 in Santa Clara County. The practice phone is (626) 791-9004.
- Action Urgent Care Inc4735 Hamilton Ave, San Jose, CA 95130 · Santa Clara CountyPhone(626) 791-9004
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Chase Jonathan Whelan is affiliated with 4 sites of care and 4 medical groups
Chase Whelan's primary practice is Action Urgent Care Inc in San Jose, California. Chase Whelan is also affiliated with Novant Health New Hanover Regional Medical Center. The medical group on file is Action Urgent Care. Dmand AI also links Chase Whelan to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Chase Jonathan Whelan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Chase Whelan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Action Urgent Care Inc | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Chase Jonathan Whelan is one of 883 surgical physician assistants in California
Surgical is Chase Whelan's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Dmand AI has Chase Whelan's licenses on file in 2 states: North Carolina and Connecticut.
Specialties and state licenses
- Surgical physician assistant, North Carolina
- Connecticut license
Surgical physician assistants near Chase Whelan
Counts of surgical 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
Chase Jonathan Whelan treated 244 Medicare patients in 2024, average age 73
CMS counts 244 Medicare patients who saw Chase Whelan in 2024. The largest group is 65 to 74, with 107 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Chase Whelan's median patient age at 56, with 61% women.
Chase Whelan's Medicare patients by age, 2024
Chase Whelan's Medicare patients by sex, 2024
- Women13555%
- Men10945%
Chronic conditions among Chase Whelan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Mood disorders39%
- Depression35%
- Anxiety33%
- Ischemic heart disease32%
- Diabetes30%
Share of Medicare patients with each condition. A patient can have several.
Chase Whelan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Chase Jonathan Whelan wrote 130 Medicare Part D claims in 2024
In 2024, Chase Whelan wrote 130 Medicare Part D claims for 92 patients. 92% of them were for generic drugs.
Chase Whelan's Part D claims by kind of drug, 2024
- Generic119 claims92%
- Brand-name11 claims8%
Drug classes CMS tracks in Chase Whelan's Part D claims, 2024
- Antibiotics28%37 of 130 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Chase Jonathan Whelan takes part in Medicare
Chase Whelan 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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Chase Jonathan Whelan received $97 in industry payments in 2025
CMS Open Payments shows 6 general payments to Chase Whelan from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $65.
Companies that paid Chase Whelan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Chase Jonathan Whelan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - 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) |
| 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 Chase Jonathan Whelan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Chase Jonathan Whelan's NPI number?
Chase Jonathan Whelan's NPI number is 1023590502. It was assigned on August 31, 2018, and it is active in the NPI Registry.
What does Chase Jonathan Whelan specialize in?
Chase Jonathan Whelan is a surgical physician assistant in San Jose, California. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Chase Jonathan Whelan practice?
Chase Whelan practices at 4735 Hamilton Ave, San Jose, CA 95130. Chase Whelan's primary practice is Action Urgent Care Inc in San Jose, California. Dmand AI also links Chase Whelan to 3 medical groups and 2 group practices and clinics.
What is Chase Jonathan Whelan's office phone number?
The practice phone on file for Chase Whelan is (626) 791-9004.
Which states has Chase Jonathan Whelan been licensed in?
Dmand AI has state licenses on file for Chase Whelan in North Carolina and Connecticut.
Which hospitals is Chase Jonathan Whelan affiliated with?
Chase Whelan is affiliated with Novant Health New Hanover Regional Medical Center.
What medical group is Chase Jonathan Whelan part of?
Chase Whelan is linked to Action Urgent Care. Dmand AI links Chase Whelan to 3 more medical groups.
Does Chase Jonathan Whelan accept Medicare?
Yes. CMS lists Chase Whelan as accepting Medicare assignment.
How many Medicare patients does Chase Jonathan Whelan see?
CMS counts 244 Medicare patients who saw Chase Whelan in 2024, with an average age of 73.
Has Chase Jonathan Whelan received payments from drug or device companies?
CMS Open Payments shows $97 in general payments to Chase Whelan from 2 companies from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Chase Jonathan Whelan been practicing?
Chase Whelan graduated from medical school in 2019, 7 years ago.
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