Johnny Wu, MD
Internal Medicine Physician · Fullerton, CA
Johnny Wu, MD is an internal medicine physician with a practice address in Fullerton, California, and NPI 1801356290, issued on Mar 21, 2019. Check the license (California A176391, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Johnny Wu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A176391 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2141 N Harbor Blvd Ste 25000, Fullerton, CA 92835
- Phone
- (714) 626-8650
- Enumerated
- Mar 21, 2019
- Record last updated
- Aug 31, 2022
- Medicare enrollment
- Enrolled (PECOS I20220914000916); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2141 N Harbor Blvd Ste 25000
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chizomam Abanobi, NPFamily Nurse Practitioner1447566781
- Amy Alias, MDInternal Medicine Physician1306015607
- Julie BeckFamily Nurse Practitioner1346407293
- Hyacinth Lyre CabreraAmbulatory Care Registered Nurse1427949437
- Vanessa Franco, PA-CPhysician Assistant1609402114
- Jay Kim, M.D.Rheumatology Physician1811984123
Verify Johnny Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A176391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,016 Medicare Part D claims for 1,024 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 104 claims were for opioids.
Most prescribed
- Atorvastatin Calcium410 claims
- Amlodipine Besylate309 claims
- Losartan Potassium212 claims
- Rosuvastatin Calcium202 claims
- Levothyroxine Sodium192 claims
- Furosemide133 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $173.65
4 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnny Wu among 17,696 internal medicine physician records in California
Johnny Wu, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2019 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 internal medicine physician records list a practice address in Fullerton
They are 44 of the 5,437 NPPES records with a practice address in Fullerton, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Fullerton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rajiv Bhavsar, M.D.Fullerton, CA 928351477550648
- Bradley Borsari, MDFullerton, CA 928351104826619
- Eugene BostonFullerton, CA 928351023019965
- Ruben Cabral, MDFullerton, CA 928351568458008
- Friedhelm Cordes, M.D.Fullerton, CA 928351588650931
- Robert Francis, M.D.Fullerton, CA 928351366439804
- Leo Garcia, M.D.Fullerton, CA 928351831185792
- Pius Kim, M.D.Fullerton, CA 928351003863317
Common questions
What is Johnny Wu, MD's NPI number?
Johnny Wu, MD's National Provider Identifier (NPI) is 1801356290, issued on Mar 21, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Johnny Wu, MD located?
The NPPES record lists a practice address at 2141 N Harbor Blvd Ste 25000, Fullerton, CA, 92835. Phone: (714) 626-8650. Providers update this record themselves, so call before visiting.
How can I verify Johnny Wu, MD's license?
NPPES lists California license number A176391, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Johnny Wu, MD prescribe under Medicare Part D?
In 2024, Johnny Wu, MD had 7,016 Medicare Part D claims for 1,024 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.