Susan Duan, M.D,
NPI 1275951261 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Duan, M.D, is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1275951261).
Provider details
- NPI number
- 1275951261
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D,
- Sex
- Female
- Sole proprietor
- Yes
- License
- A156314 (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
12 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
458 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 | 227 | $90 |
| 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 | 91 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 68 | $69 |
| Administration of Influenza Virus VaccineG0008 | 34 | $35 |
| Admn Sarscov2 Vacc 1 Dose90480 | 26 | $47 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 141 | 38 |
| Amlodipine Besylate | 69 | 23 |
| Levothyroxine Sodium | 64 | 16 |
| Losartan Potassium | 60 | 17 |
| Metformin Hcl | 43 | — |
| Gabapentin | 41 | 12 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-04-07
- Last updated
- 2019-07-08
Frequently asked questions
- What is Susan Duan's NPI number?
- Susan Duan's National Provider Identifier (NPI) is 1275951261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Duan's specialty?
- Susan Duan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Duan located?
- Susan Duan's practice location on file with NPPES is 100 Ucla Medical Plz Ste 490, Los Angeles, CA 90024-7003.
- What is Susan Duan's phone number?
- The practice phone number listed in the NPPES registry for Susan Duan is (310) 206-6232.
- Does Susan Duan accept Medicare?
- Susan Duan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Duan's NPI active?
- Yes — Susan Duan's NPI (1275951261) is active in the NPPES registry as of the last update on 2019-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.