Diane Bai, M.D.
NPI 1932145646 · Gastroenterology Physician · Tacoma, WA
Diane Bai, M.D. is a Gastroenterology Physician provider in Tacoma, WA (NPI 1932145646).
Provider details
- NPI number
- 1932145646
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD00049108 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
523 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 136 | $125 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 79 | $87 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 64 | $237 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 59 | $71 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 51 | $166 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 131 | 64 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 70 | 69 |
| Loperamide Hclbrand: Loperamide | 62 | 17 |
| Dicyclomine Hcl | 61 | 27 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 58 | 55 |
| Nortriptyline Hcl | 55 | 17 |
| Pantoprazole Sodium | 52 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2012-11-06
Frequently asked questions
- What is Diane Bai's NPI number?
- Diane Bai's National Provider Identifier (NPI) is 1932145646, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Bai's specialty?
- Diane Bai is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Bai located?
- Diane Bai's practice location on file with NPPES is 1112 6th Ave, Tacoma, WA 98405-4040.
- What is Diane Bai's phone number?
- The practice phone number listed in the NPPES registry for Diane Bai is (253) 272-8664.
- Is Diane Bai's NPI active?
- Yes — Diane Bai's NPI (1932145646) is active in the NPPES registry as of the last update on 2012-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.