Doctor profile · Federal record
Dr. Diana Yao, M.D.
Specialist (CMS: Gastroenterology) · Long Beach, CA
- NPI 1588678833
- Accepts Medicare
- MIPS 50.8 / 100 · 2023
- 36 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3833 Worsham Avenue, Suite 300
Long Beach, CA 908081766
(562) 595-5421
fax (562) 426-2826
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- January 10, 2022
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 174400000X — NUCC code
- State license (1)
- California #G73884
- Medicaid
- CA #GR0058960
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588678833. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
802
Distinct HCPCS
10
Medicare allowed
$112,401
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 177 | 132 | $136 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 141 | 107 | $91 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 115 | 113 | $98 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 81 | 81 | $165 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 68 | 68 | $192 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 60 | 60 | $192 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 59 | 59 | $261 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 39 | 39 | $119 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 25 | 25 | $73 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 19 | 19 | $193 |
In context: peer comparison
Among 14 peers in this city , average services per provider: 278. This provider delivers 2.9× the peer median.Open Payments
Industry payments received
All-time total
$1,511
Transactions
51
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ipsen Biopharmaceuticals, Inc | 2 | $278.34 | |
| ABBVIE INC. | 10 | $200.80 | |
| GENZYME CORPORATION | 3 | $185.87 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 8 | $158.32 | |
| Janssen Biotech, Inc. | 8 | $137.22 | |
| Phathom Pharmaceuticals, Inc. | 4 | $88.38 | |
| Madrigal Pharmaceuticals | 2 | $74.31 | |
| Merck Sharp & Dohme LLC | 3 | $62.26 | |
| QOL Medical, LLC | 2 | $53.16 | |
| Ardelyx, Inc. | 2 | $51.19 | |
| Celgene Corporation | 2 | $40.01 | |
| Lilly USA, LLC | 2 | $31.21 | |
| Neurocrine Biosciences, Inc. | 1 | $26.46 | |
| Alcresta Therapeutics, Inc. | 1 | $24.32 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $23.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
756
Patients
286
Total drug cost
$117,697
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 260 | 105 | $4,752 |
| Famotidine | Generic | 124 | 41 | $8,502 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 97 | 96 | $7,352 |
| Pantoprazole Sodium | Generic | 83 | 31 | $2,035 |
| Sucralfate | Generic | 36 | 0 | $7,226 |
| Lansoprazole | Generic | 27 | 0 | $4,810 |
| Linzess (Linaclotide) | Brand | 22 | 0 | $18,990 |
| Creon (Lipase/Protease/Amylase) | Brand | 18 | 0 | $36,225 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 15 | 0 | $11,072 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 13 | 13 | $2,161 |
Frequently asked questions
What is Dr. Diana Yao's medical specialty?
Dr. Diana Yao practices Specialist in Long Beach, CA.
Where does Dr. Diana Yao practice?
Dr. Diana Yao practices at 3833 Worsham Avenue, Long Beach, CA 908081766. Office phone: 5625955421.
What is Dr. Diana Yao's NPI?
Dr. Diana Yao's National Provider Identifier (NPI) is 1588678833, issued by NPPES.
Does Dr. Diana Yao accept Medicare assignment?
Yes. Dr. Diana Yao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Yao commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.