Physician Profile
Diana K. Yao, M.D.
Unclaimed ProfileAbout Dr. Yao
Diana K. Yao, M.D. is a specialist based in Long Beach, CA. Diana is a 1990 graduate of George Washington University School of Medicine. Medicare claims data shows Diana provided 726 services to 637 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (562) 595-5421
- Email not available
Practice Locations
3833 WORSHAM AVENUE SUITE 300
Long Beach, CA 90808
Procedures Most Often Billed to Medicare
726 services · 637 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
105 | More often than most peers in Specialist |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
83 | More often than most peers in Specialist |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
58 | As often as other peers in Specialist |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
22 | As often as other peers in Specialist |
| Complete ultrasound scan of abdomen | Imaging | 76700 |
12 | Less often than most peers in Specialist |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
155 | As often as other peers in Specialist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
141 | As often as other peers in Specialist |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
65 | More often than most peers in Specialist |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
38 | More often than most peers in Specialist |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
26 | As often as other peers in Specialist |
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 specialists at this location 4
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 specialists in Long Beach 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Diana K. Yao's specialty?
Diana K. Yao is a specialist in Long Beach, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Diana K. Yao?
Diana K. Yao is listed at 3833 Worsham Avenue Suite 300, Long Beach, CA 90808. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Diana K. Yao?
The number on file is (562) 595-5421. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Diana K. Yao?
Diana K. Yao's National Provider Identifier is 1588678833. 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
What is Diana K. Yao's education?
Diana K. Yao attended George Washington University School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Diana K. Yao have?
Diana K. Yao has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What is Diana K. Yao known for?
According to Medicare billing data, Diana K. Yao performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, biopsy of large bowel using a flexible endoscope and removal of polyps or growths of large bowel using an endoscope with mechanical snare; reads or performs imaging such as complete ultrasound scan of abdomen, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Diana K. Yao's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Diana K. Yao. 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.