Phong Bui, MD
NPI 1316177462 · Endocrinology, Diabetes & Metabolism Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Phong Bui, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Fountain Valley, CA (NPI 1316177462).
Provider details
- NPI number
- 1316177462
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A101682 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 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
3,559 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,370 | $137 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 1,191 | $3 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 418 | $36 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 225 | $190 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 163 | $67 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 1,314 | 230 |
| Empagliflozin/Metformin Hclbrand: Synjardy Xr | 1,141 | 214 |
| Empagliflozinbrand: Jardiance | 975 | 198 |
| Pioglitazone Hcl | 820 | 205 |
| Dulaglutidebrand: Trulicity | 808 | 131 |
| Metformin Hcl | 739 | 193 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,335 across 62 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
- 2009-07-23
- Last updated
- 2021-07-09
- Certified
- 2021-07-09
Frequently asked questions
- What is Phong Bui's NPI number?
- Phong Bui's National Provider Identifier (NPI) is 1316177462, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Phong Bui's specialty?
- Phong Bui is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Phong Bui located?
- Phong Bui's practice location on file with NPPES is 16055 Brookhurst St, Fountain Valley, CA 92708.
- What is Phong Bui's phone number?
- The practice phone number listed in the NPPES registry for Phong Bui is (714) 839-2400.
- Does Phong Bui accept Medicare?
- Phong Bui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Phong Bui's NPI active?
- Yes — Phong Bui's NPI (1316177462) is active in the NPPES registry as of the last update on 2021-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.