Physician Profile
Unclaimed ProfileAbout SHIU
Based in Rancho Cucamonga, CA, Mark L Shiu, DO is listed in the NPI registry under family practice. Mark is also listed as specialising in family 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
Areas of Expertise
Common questions
What kind of doctor is Dr. Shiu?
Dr. Shiu is a family practice in Rancho Cucamonga, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “FAMILY PRACTICE”.
NPI registry
What is Dr. Shiu's address?
Dr. Shiu is listed at 7974 HAVEN AVE SUITE 250, Rancho Cucamonga, CA 91730. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Shiu?
The number on file is (800) 734-1733. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Shiu's NPI number?
Dr. Shiu's National Provider Identifier is 1629004478. 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. Shiu train?
Dr. Shiu attended Other, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Shiu been practising?
Dr. Shiu has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Shiu perform?
According to Medicare billing data, Dr. Shiu provides treatments such as assessment of emotional or behavioral problems, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Shiu confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Shiu. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (800) 734-1733
- Email not available
Practice Locations
7974 HAVEN AVE SUITE 250
Rancho Cucamonga, CA 91730
Procedures Most Often Billed to Medicare
596 services · 283 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Assessment of emotional or behavioral problems | Treatment | 96127 |
26 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
519 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
34 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
17 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other family practices 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 family practices in Rancho Cucamonga 8
Same specialty, same city.
More connections — 22 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2003 at Other 6
Providers who graduated from the same medical school in the same year.
Also performs Assessment of emotional or behavioral problems 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.