Physician Profile
Derek Tak Leung, M.D.
Unclaimed ProfileAbout Dr. Leung
Derek Tak Leung, M.D. is a hospitalist based in Fontana, CA. Derek is a 2011 graduate of Loma Linda University School of Medicine. Derek is also listed as specializing in internal medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (909) 427-5000
- Email not available
Practice Locations
9961 SIERRA AVE
Fontana, CA 92335
Procedures Most Often Billed to Medicare
22 services · 22 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
22 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other hospitalists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other hospitalists in Fontana 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Loma Linda University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2011 at Loma Linda University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Leung specialize in?
Dr. Leung is a hospitalist in Fontana, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “HOSPITALIST”.
NPI registry
Where is Dr. Leung located?
Dr. Leung is listed at 9961 SIERRA AVE, Fontana, CA 92335. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Leung's phone number?
The number on file is (909) 427-5000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Leung?
Dr. Leung's National Provider Identifier is 1336560481. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Leung go to medical school?
Dr. Leung attended Loma Linda University School of Medicine, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Leung have?
Dr. Leung has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Leung do most often?
According to Medicare billing data, Dr. Leung the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Leung's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Leung. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.