Charles Bui, M.D.
NPI 1013100338 · Hospitalist Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Bui, M.D. is a Hospitalist Physician provider in Harbor City, CA (NPI 1013100338).
Provider details
- NPI number
- 1013100338
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A101681 (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 tenure28% of score
18 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
25 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 25 | $123 |
Typical Medicare-allowed amounts for these services range $123–$123 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 48 | 31 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 43 | 34 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 36 | 35 |
| Amlodipine Besylate | 33 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Prednisone | 25 | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-21
- Last updated
- 2021-12-08
Frequently asked questions
- What is Charles Bui's NPI number?
- Charles Bui's National Provider Identifier (NPI) is 1013100338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Bui's specialty?
- Charles Bui is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Bui located?
- Charles Bui's practice location on file with NPPES is 25825 Vermont Ave, Harbor City, CA 90710-3518.
- What is Charles Bui's phone number?
- The practice phone number listed in the NPPES registry for Charles Bui is (310) 517-4027.
- Does Charles Bui accept Medicare?
- Charles Bui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Bui's NPI active?
- Yes — Charles Bui's NPI (1013100338) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.