Ryan Ou
- Part D claims, 2026
- 84
- Hospital affiliations
- 1
- Industry payments
- $3,857
- Medical group
- 1
- State license
- 1
- Practice address
- 1190 Veterans Blvd, Redwood City, CA 94063
- Practice phone
- Call (650) 299-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Redwood City, California
Find Ryan Ou'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 Ou is a general surgeon in Redwood City, California
Ryan Ou practices at Permanente Medical Group Inc in Redwood City, California.
Ryan Ou's NPI, 1457855074, was assigned on March 19, 2018. Ryan Ou holds California license A163824.
- NPI
- 1457855074NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628403177
- NPI enumeration date
- March 19, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 299-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Ryan Ou practices at Permanente Medical Group Inc in Redwood City, California
Ryan Ou's primary practice is Permanente Medical Group Inc, at 1190 Veterans Blvd, Redwood City, CA 94063 in San Mateo County. The practice phone is (650) 299-2000.
- Permanente Medical Group Inc1190 Veterans Blvd, Redwood City, CA 94063 · San Mateo CountyPhone(650) 299-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Ryan Ou is affiliated with 3 sites of care and 1 medical group
Ryan Ou's primary practice is Permanente Medical Group Inc in Redwood City, California. Ryan Ou is also affiliated with Redwood City Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Ryan Ou to 1 more group practice or clinic, 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 Ryan Ou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ryan Ou practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Ryan Ou is one of 2,926 general surgeons in California
Surgery is Ryan Ou's primary specialty in the NPI Registry, under taxonomy code 208600000X. Ryan Ou is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Ryan Ou
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 Ou's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Ryan Ou's median patient age at 58, with 47% women.
Ryan Ou's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women47%
- Men52%
Source: Dmand AI Patient Panel Data
Ryan Ou wrote 84 Medicare Part D claims in 2026
In 2026, Ryan Ou wrote 84 Medicare Part D claims for 60 patients. 95% of them were for generic drugs. CMS names the drug for 53 of them, across 2 drugs with 11 or more claims each, at $936 in total drug cost. In 2023, CMS named 49 claims across 1 drug.
Ryan Ou's Part D claims by kind of drug, 2026
- Generic80 claims95%
- Brand-name and other4 claims5%
Ryan Ou'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 Ou's Part D claims, 2026
- Opioids57%48 of 84 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: 492024: 538%
Drugs named by CMS: 2 in 2024, 1 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), 2026 data
How Ryan Ou takes part in Medicare
Ryan Ou accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Ryan Ou received $3,857 in industry payments from 2023 to 2025
CMS Open Payments shows 36 general payments to Ryan Ou from 6 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 58% of the total. Medtronic, Inc. paid the most, $2,345.
General payments to Ryan Ou by program year, 2023 to 2025
General payments to Ryan Ou by kind, 2023 to 2025
- Food and beverage$2,25158%
- Travel and lodging$1,40236%
- Education$1965%
- Gifts$90%
Companies that paid Ryan Ou the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Ryan Ou'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 Ryan Ou
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ryan Ou's NPI number?
Ryan Ou's NPI number is 1457855074. It was assigned on March 19, 2018, and it is active in the NPI Registry.
What does Ryan Ou specialize in?
Ryan Ou is a general surgeon in Redwood City, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Ryan Ou practice?
Ryan Ou practices at 1190 Veterans Blvd, Redwood City, CA 94063. Ryan Ou's primary practice is Permanente Medical Group Inc in Redwood City, California. Dmand AI also links Ryan Ou to 1 group practice or clinic, and a free account names each one.
What is Ryan Ou's office phone number?
The practice phone on file for Ryan Ou is (650) 299-2000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Ryan Ou's email address?
Dmand AI checks professional and personal email addresses for Ryan Ou through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Ryan Ou's medical license number?
Ryan Ou holds California license A163824.
Which hospitals is Ryan Ou affiliated with?
Ryan Ou is affiliated with Redwood City Medical Center.
What medical group is Ryan Ou part of?
Ryan Ou is linked to The Permanente Medical Group, Inc.
Who does Ryan Ou practice with?
Dmand AI links 18,480 HCPs to Ryan Ou's primary medical group, 230 of them general surgeons. A free account lists them, with verified contacts.
Does Ryan Ou accept Medicare?
Yes. CMS lists Ryan Ou as accepting Medicare assignment.
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What drugs does Ryan Ou prescribe most?
In 2024 Medicare Part D data, Ryan Ou's most prescribed drugs by claims were Oxycodone HCl and Ondansetron HCl.
Has Ryan Ou received payments from drug or device companies?
CMS Open Payments shows $3,857 in general payments to Ryan Ou from 6 companies from 2023 to 2025. The largest total came from Medtronic, Inc.
How long has Ryan Ou been practicing?
Ryan Ou graduated from medical school in 2018, 8 years ago.
What EHR does Ryan Ou's practice use?
Dmand AI tracks the EHR system at Permanente Medical Group Inc and at 2 more affiliated sites. The vendor and product are available with a free Dmand AI account.
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