Sandy Y. Jung-Wu, MD
Allergy & Immunology Physician · Fontana, CA
Sandy Y. Jung-Wu, MD is an allergy & immunology physician with a practice address in Fontana, California, and NPI 1235339938, issued on Jul 20, 2007. Check the license (California A101447, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sandy Y. Jung-Wu
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- A101447 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9985 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-6498
- Enumerated
- Jul 20, 2007
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110919000279); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2006
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 9985 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Anje'Le AlstonSports Medicine (Internal Medicine) Physician1356970842
- Peyman Andalib, MDStudent in an Organized Health Care Education/Training Program1104028000
- Gerald ArafolOccupational Therapist1134315666
- Lovie Jay Arguelles, PTPhysical Therapist1457472920
Verify Sandy Y. Jung-Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
270 Medicare Part D claims for 87 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Spiriva Respimat45 claims
- Breyna26 claims
- Dupixent Pen26 claims
- Azelastine Hcl25 claims
- Fasenra Pen22 claims
- Montelukast Sodium20 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sandy Y. Jung-Wu among 444 allergy & immunology physician records in California
Sandy Y. Jung-Wu, MD is one of 444 allergy & immunology 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 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 38% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 281 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Fontana → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Amarjot Kang, MDLoma Linda, CA 923541124685524
- Mohsen Mabudian, M.D.Redlands, CA 923731629022819
- Edwin Malesky, MDRedlands, CA 923731326156209
- Vincent Devlin, DO, MHSRancho Mirage, CA 922701871910752
- Aqil Imam, MDRancho Mirage, CA 922701730173212
- Sultan Majid, DORancho Mirage, CA 922701366902454
- Ranjeet Minocha, M.D.Rancho Mirage, CA 922701407103492
- David Waldman, M.D.Rancho Mirage, CA 922701467463265
Common questions
What is Sandy Y. Jung-Wu, MD's NPI number?
Sandy Y. Jung-Wu, MD's National Provider Identifier (NPI) is 1235339938, issued on Jul 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sandy Y. Jung-Wu, MD located?
The NPPES record lists a practice address at 9985 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-6498. Providers update this record themselves, so call before visiting.
How can I verify Sandy Y. Jung-Wu, MD's license?
NPPES lists California license number A101447, 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 Sandy Y. Jung-Wu, MD prescribe under Medicare Part D?
In 2024, Sandy Y. Jung-Wu, MD had 270 Medicare Part D claims for 87 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.