Irene Sun, PA
- Medicare services, 2024
- 176
- Medicare patients, 2024
- 141
- Part D claims, 2024
- 304
- Hospital affiliations
- 1
- Industry payments
- $65
- Practice address
- 344 S Hauser Blvd, Los Angeles, CA 90036
- Practice phone
- Call (716) 845-2300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Roswell Park Cancer Institute
Los Angeles, California
Find Irene Sun'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.
Irene Sun is a physician assistant in Los Angeles, California
Irene Sun practices at Roswell Park Cancer Institute in Los Angeles, California.
Irene Sun's NPI, 1831829001, was assigned on June 12, 2022.
- NPI
- 1831829001NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608246095
- NPI enumeration date
- June 12, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (716) 845-2300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Irene Sun practices at Roswell Park Cancer Institute in Los Angeles, California
Irene Sun's primary practice is Roswell Park Cancer Institute, at 344 S Hauser Blvd, Los Angeles, CA 90036 in Los Angeles County. The practice phone is (716) 845-2300.
- Roswell Park Cancer Institute344 S Hauser Blvd, Los Angeles, CA 90036 · Los Angeles CountyPhone(716) 845-2300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Irene Sun is affiliated with 2 sites of care and 1 medical group
Irene Sun's primary practice is Roswell Park Cancer Institute in Los Angeles, California. Irene Sun is also affiliated with Roswell Park Comprehensive Cancer Center. The medical group on file is Roswell Park Comprehensive Cancer Center.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Irene Sun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Irene Sun practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Roswell Park Cancer Institute | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Irene Sun is one of 11,482 physician assistants in California
Physician assistant is Irene Sun's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Irene Sun has a license on file in New York.
Specialties and state licenses
- Physician assistant, New York
Clinical focus
Dmand AI lists bladder disease, enlarged prostate and tobacco use among the conditions Irene Sun treats.
Physician assistants near Irene Sun
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
Irene Sun billed Medicare for 176 services in 2024
CMS data shows 176 Medicare services from Irene Sun across 3 procedure codes in 2024, for 141 Medicare patients. Medicare paid $13,414 for them. Every service was in a facility, such as a hospital, rather than an office.
Irene Sun's Medicare services by type, 2024
- Office and hospital visits148
- Other services28
Irene Sun compared with the California median for physician assistants, 2024
- Irene Sun
- California median
- Medicare services
- 176vs 20414% below
- Medicare patients
- 141vs 10534% above
- Part D claims
- 249vs 243Close to median
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Irene Sun'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
Irene Sun treated 141 Medicare patients in 2024, average age 72
CMS counts 141 Medicare patients who saw Irene Sun in 2024. The largest group is 65 to 74, with 80 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.73, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Irene Sun's median patient age at 70, with 14% women.
Irene Sun's Medicare patients by age, 2024
Irene Sun's Medicare patients by sex, 2024
- Women2014%
- Men12186%
Chronic conditions among Irene Sun's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer73%
- Arthritis36%
- Chronic kidney disease29%
- Diabetes29%
- Ischemic heart disease28%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Irene Sun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women14%
- Men85%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Irene Sun wrote 304 Medicare Part D claims in 2024
In 2024, Irene Sun wrote 304 Medicare Part D claims for 131 patients. 86% of them were for generic drugs. CMS names the drug for 249 of them, across 7 drugs with 11 or more claims each, at $13,902 in total drug cost.
Irene Sun's Part D claims by kind of drug, 2024
- Generic261 claims86%
- Brand-name43 claims14%
Irene Sun'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 Irene Sun's Part D claims, 2024
- Antibiotics23%69 of 304 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How Irene Sun takes part in Medicare
Irene Sun 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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Irene Sun received $65 in industry payments in 2025
CMS Open Payments shows 1 general payment to Irene Sun from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $65.
Companies that paid Irene Sun 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 Irene Sun'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 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) |
| Part D prescribing | Medicare 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 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 Irene Sun
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Irene Sun's NPI number?
Irene Sun's NPI number is 1831829001. It was assigned on June 12, 2022, and it is active in the NPI Registry.
What does Irene Sun specialize in?
Irene Sun is a physician assistant in Los Angeles, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Irene Sun practice?
Irene Sun practices at 344 S Hauser Blvd, Los Angeles, CA 90036. Irene Sun's primary practice is Roswell Park Cancer Institute in Los Angeles, California.
What is Irene Sun's office phone number?
The practice phone on file for Irene Sun is (716) 845-2300.
Which hospitals is Irene Sun affiliated with?
Irene Sun is affiliated with Roswell Park Comprehensive Cancer Center.
What medical group is Irene Sun part of?
Irene Sun is linked to Roswell Park Comprehensive Cancer Center.
Does Irene Sun accept Medicare?
Yes. CMS data shows Irene Sun billed Medicare for 176 services in 2024, and Irene Sun accepts Medicare assignment.
How many Medicare patients does Irene Sun see?
CMS counts 141 Medicare patients who saw Irene Sun in 2024, with an average age of 72.
What services does Irene Sun bill to Medicare?
In 2024, Irene Sun's most billed Medicare services were office visit, established patient (99215), medicare service (G2212) and office visit, established patient (99214).
What drugs does Irene Sun prescribe most?
In 2024 Medicare Part D data, Irene Sun's most prescribed drugs by claims were Tamsulosin HCl, Ciprofloxacin HCl and Finasteride.
Has Irene Sun received payments from drug or device companies?
CMS Open Payments shows $65 in general payments to Irene Sun from 1 company from 2025 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Irene Sun been practicing?
Irene Sun graduated from medical school in 2021, 5 years ago.
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