Patricia Tsai, M.D.
NPI 1538100896 · Gastroenterology Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patricia Tsai, M.D. is a Gastroenterology Physician provider in Newport Beach, CA (NPI 1538100896).
Provider details
- NPI number
- 1538100896
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A64184 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,661 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 2,201 | $38 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 793 | $174 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 261 | $111 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 257 | $124 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 234 | $108 |
| Special Stained Specimen Slides to Identify Organisms Including Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 492 | 191 |
| Famotidine | 376 | 138 |
| Omeprazole | 303 | 115 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 201 | 199 |
| Sucralfate | 105 | 41 |
| Tenofovir Alafenamidebrand: Vemlidy | 68 | — |
| Linaclotidebrand: Linzess | 62 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,426 across 168 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2012-06-07
Frequently asked questions
- What is Patricia Tsai's NPI number?
- Patricia Tsai's National Provider Identifier (NPI) is 1538100896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patricia Tsai's specialty?
- Patricia Tsai is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Patricia Tsai located?
- Patricia Tsai's practice location on file with NPPES is 496 Old Newport Blvd, Newport Beach, CA 92663-4263.
- What is Patricia Tsai's phone number?
- The practice phone number listed in the NPPES registry for Patricia Tsai is (949) 650-4630.
- Does Patricia Tsai accept Medicare?
- Patricia Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patricia Tsai's NPI active?
- Yes — Patricia Tsai's NPI (1538100896) is active in the NPPES registry as of the last update on 2012-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.