Ryan Chun-Long Cheung
- Part D claims, 2024
- 62
- Industry payments
- $288
- State license
- 1
- Year NPI issued
- 2020
- Practice address
- 100 W California Blvd, Pasadena, CA 91105-3010
- Practice phone
- Call (626) 397-5187
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Ryan Cheung'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.
Ryan Chun-Long Cheung is a general surgeon in Pasadena, California
Ryan Cheung practices in Pasadena, California.
Ryan Cheung's NPI, 1245868116, was assigned on March 27, 2020. Ryan Cheung graduated from California Northstate University College of Medicine in 2020. Ryan Cheung holds California license A190377.
- NPI
- 1245868116NPI Registry (opens in a new tab)
- NPI enumeration date
- March 27, 2020
- NPI status
- Active
- Practice phone
- (626) 397-5187
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Ryan Chun-Long Cheung's practice address is in Pasadena, California
Ryan Cheung's practice address in the NPI Registry is 100 W California Blvd, Pasadena, CA 91105-3010. The practice phone is (626) 397-5187.
- NPI Registry address100 W California Blvd, Pasadena, CA 91105-3010Phone(626) 397-5187
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Ryan Chun-Long Cheung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ryan Cheung practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ryan Cheung's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Ryan Chun-Long Cheung is one of 2,926 general surgeons in California
Surgery is Ryan Cheung's primary specialty in the NPI Registry, under taxonomy code 208600000X. Ryan Cheung is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Ryan Cheung
Counts of general surgeons 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
Ryan Chun-Long Cheung's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Ryan Cheung's median patient age at 65, with 50% women.
Ryan Cheung's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Ryan Chun-Long Cheung wrote 62 Medicare Part D claims in 2024
In 2024, Ryan Cheung wrote 62 Medicare Part D claims for 47 patients. 100% of them were for generic drugs. CMS names the drug for 28 of them, across 1 drug with 11 or more claims each, at $65 in total drug cost. In 2023, CMS named 36 claims across 2 drugs.
Ryan Cheung'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 Ryan Cheung's Part D claims, 2024
- Opioids69%43 of 62 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 362024: 2822%
Drugs named by CMS: 1 in 2024, 2 in 2023.
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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Ryan Chun-Long Cheung received $288 in industry payments from 2024 to 2025
CMS Open Payments shows 6 general payments to Ryan Cheung from 6 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Integra LifeSciences Corporation paid the most, $97.
General payments to Ryan Cheung by program year, 2024 to 2025
Companies that paid Ryan Cheung the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Ryan Chun-Long Cheung graduated from California Northstate University College of Medicine
Ryan Cheung graduated from California Northstate University College of Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Ryan Chun-Long Cheung'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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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 Ryan Chun-Long Cheung
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What is Ryan Chun-Long Cheung's NPI number?
Ryan Chun-Long Cheung's NPI number is 1245868116. It was assigned on March 27, 2020, and it is active in the NPI Registry.
What does Ryan Chun-Long Cheung specialize in?
Ryan Chun-Long Cheung is a general surgeon in Pasadena, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Ryan Chun-Long Cheung practice?
Ryan Cheung practices at 100 W California Blvd, Pasadena, CA 91105-3010.
What is Ryan Chun-Long Cheung's office phone number?
The practice phone on file for Ryan Cheung is (626) 397-5187.
What is Ryan Chun-Long Cheung's medical license number?
Ryan Cheung holds California license A190377.
Where did Ryan Chun-Long Cheung go to medical school?
Ryan Cheung graduated from California Northstate University College of Medicine in 2020.
What drugs does Ryan Chun-Long Cheung prescribe most?
In 2024 Medicare Part D data, Ryan Cheung's most prescribed drugs by claims were Oxycodone HCl.
Has Ryan Chun-Long Cheung received payments from drug or device companies?
CMS Open Payments shows $288 in general payments to Ryan Cheung from 6 companies from 2024 to 2025. The largest total came from Integra LifeSciences Corporation.
How long has Ryan Chun-Long Cheung been practicing?
Ryan Cheung graduated from medical school in 2020, 6 years ago.
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