Dr. Johnny Wu, MD
- Medicare services, 2024
- 1,413
- Medicare patients, 2024
- 401
- Part D claims, 2024
- 7,016
- Hospital affiliations
- 1
- Industry payments
- $666
- Practice address
- 2141 N Harbor Blvd, Fullerton, CA 92835
- Practice phone
- Call (714) 449-4900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Providence Medical Foundation
Fullerton, California
Find Dr. Wu'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.
Dr. Johnny Wu is an internist in Fullerton, California
Dr. Wu practices at Providence Medical Foundation in Fullerton, California.
Dr. Wu's NPI, 1801356290, was assigned on March 21, 2019. Dr. Wu holds California license A176391.
- NPI
- 1801356290NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800126657
- NPI enumeration date
- March 21, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 449-4900
- 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)
Dr. Johnny Wu practices at Providence Medical Foundation in Fullerton, California
Dr. Wu's primary practice is Providence Medical Foundation, at 2141 N Harbor Blvd, Fullerton, CA 92835 in Orange County. The practice phone is (714) 449-4900.
- Providence Medical Foundation2141 N Harbor Blvd, Fullerton, CA 92835 · Orange CountyPhone(714) 449-4900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Johnny Wu is affiliated with 7 sites of care and 1 medical group
Dr. Wu's primary practice is Providence Medical Foundation in Fullerton, California. Dr. Wu is also affiliated with Providence St. Jude Medical Center. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Wu to 4 more home health agencies and 1 group practice or clinic, 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 Dr. Johnny Wu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wu practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Medical Foundation | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Johnny Wu is one of 16,751 internists in California
Internal medicine is Dr. Wu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Wu is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Wu
Counts of internists 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
Dr. Johnny Wu billed Medicare for 1,413 services in 2024
CMS data shows 1,413 Medicare services from Dr. Wu across 11 procedure codes in 2024, for 401 Medicare patients. Medicare paid $103,186 for them. Every service was in an office.
Dr. Wu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6492024: 74214%
- Other services
- 2023: 922024: 621575%
- Tests and treatments
- 2023: 832024: 5040%
Dr. Wu compared with the California median for internists, 2024
- Dr. Wu
- California median
- Medicare services
- 1,413vs 3613.9 times
- Medicare patients
- 401vs 1512.7 times
- Part D claims
- 6,186vs 42114.7 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Wu'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
Dr. Johnny Wu treated 401 Medicare patients in 2024, average age 76
CMS counts 401 Medicare patients who saw Dr. Wu in 2024. The largest group is 65 to 74, with 166 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Wu's median patient age at 69, with 52% women.
Dr. Wu's Medicare patients by age, 2024
Dr. Wu's Medicare patients by sex, 2024
- Women23358%
- Men16842%
Chronic conditions among Dr. Wu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Diabetes30%
- Chronic kidney disease25%
- Osteoporosis24%
- Ischemic heart disease22%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Johnny Wu wrote 7,016 Medicare Part D claims in 2024
In 2024, Dr. Wu wrote 7,016 Medicare Part D claims for 1,024 patients. 88% of them were for generic drugs. CMS names the drug for 6,186 of them, across 125 drugs with 11 or more claims each, at $575,550 in total drug cost. In 2023, CMS named 2,670 claims across 81 drugs.
Dr. Wu's Part D claims by kind of drug, 2024
- Generic6,146 claims88%
- Brand-name837 claims12%
- Other33 claims0%
Dr. Wu'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 Dr. Wu's Part D claims, 2024
- Opioids1%104 of 7,016 claims
- Antibiotics4%283 of 7,016 claims
- Antipsychotics, patients 65 and over0%21 of 7,016 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: 2,6702024: 6,186132%
Drugs named by CMS: 125 in 2024, 81 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
Dr. Johnny Wu offers telehealth to Medicare patients
Dr. Wu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Wu as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 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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Dr. Johnny Wu received $666 in industry payments from 2022 to 2025
CMS Open Payments shows 30 general payments to Dr. Wu from 7 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $446.
General payments to Dr. Wu by program year, 2022 to 2025
Companies that paid Dr. Wu the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Johnny Wu'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 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)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 Dr. Johnny Wu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Johnny Wu's NPI number?
Dr. Johnny Wu's NPI number is 1801356290. It was assigned on March 21, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Johnny Wu?
Dr. Johnny Wu is an internist in Fullerton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Johnny Wu practice?
Dr. Wu practices at 2141 N Harbor Blvd, Fullerton, CA 92835. Dr. Wu's primary practice is Providence Medical Foundation in Fullerton, California. Dmand AI also links Dr. Wu to 4 home health agencies and 1 group practice or clinic.
What is Dr. Johnny Wu's office phone number?
The practice phone on file for Dr. Wu is (714) 449-4900.
What is Dr. Johnny Wu's medical license number?
Dr. Wu holds California license A176391.
Which hospitals is Dr. Johnny Wu affiliated with?
Dr. Wu is affiliated with Providence St. Jude Medical Center.
What medical group is Dr. Johnny Wu part of?
Dr. Wu is linked to St. Jude Heritage Medical Group.
Does Dr. Johnny Wu accept Medicare?
Yes. CMS data shows Dr. Wu billed Medicare for 1,413 services in 2024, and Dr. Wu accepts Medicare assignment.
Does Dr. Johnny Wu offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Wu as offering telehealth services.
How many Medicare patients does Dr. Johnny Wu see?
CMS counts 401 Medicare patients who saw Dr. Wu in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Johnny Wu bill to Medicare?
In 2024, Dr. Wu's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
What drugs does Dr. Johnny Wu prescribe most?
In 2024 Medicare Part D data, Dr. Wu's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Johnny Wu received payments from drug or device companies?
CMS Open Payments shows $666 in general payments to Dr. Wu from 7 companies from 2022 to 2025. The largest total came from Amgen Inc.
How long has Dr. Johnny Wu been practicing?
Dr. Wu graduated from medical school in 2019, 7 years ago.
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