Amy Bui, M.D.
NPI 1013027838 · Specialist · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Bui, M.D. is a Specialist provider in Mission Viejo, CA (NPI 1013027838).
Provider details
- NPI number
- 1013027838
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A82140 (CA)
Specialties & taxonomies
Other Service Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,196 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 | 405 | $138 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 383 | $17 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 87 | $126 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 62 | $194 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 47 | $44 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 298 | 71 |
| Tirzepatidebrand: Mounjaro | 163 | 24 |
| Levothyroxine Sodiumbrand: Synthroid | 145 | 31 |
| Alendronate Sodium | 119 | 29 |
| Metformin Hclbrand: Metformin Hcl Er | 106 | 31 |
| Atorvastatin Calcium | 90 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,300 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
- 2006-08-30
- Last updated
- 2021-10-15
- Certified
- 2021-10-15
Frequently asked questions
- What is Amy Bui's NPI number?
- Amy Bui's National Provider Identifier (NPI) is 1013027838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Bui's specialty?
- Amy Bui is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Amy Bui located?
- Amy Bui's practice location on file with NPPES is 26800 Crown Valley Pkwy, Mission Viejo, CA 92691-6384.
- What is Amy Bui's phone number?
- The practice phone number listed in the NPPES registry for Amy Bui is (949) 542-8004.
- Does Amy Bui accept Medicare?
- Amy Bui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Bui's NPI active?
- Yes — Amy Bui's NPI (1013027838) is active in the NPPES registry as of the last update on 2021-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.