Marshall Yuan, M.D.
NPI 1528472958 · Hospitalist Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marshall Yuan, M.D. is a Hospitalist Physician provider in Los Angeles, CA (NPI 1528472958).
Provider details
- NPI number
- 1528472958
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A156250 (CA)
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
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
685 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 | 243 | $123 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 239 | $82 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 90 | $180 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 39 | $85 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 35 | $135 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-13
- Last updated
- 2023-11-27
- Certified
- 2020-09-14
Frequently asked questions
- What is Marshall Yuan's NPI number?
- Marshall Yuan's National Provider Identifier (NPI) is 1528472958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Yuan's specialty?
- Marshall Yuan is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Yuan located?
- Marshall Yuan's practice location on file with NPPES is 1520 San Pablo St Ste 1000, Los Angeles, CA 90033.
- What is Marshall Yuan's phone number?
- The practice phone number listed in the NPPES registry for Marshall Yuan is (323) 442-5100.
- Does Marshall Yuan accept Medicare?
- Marshall Yuan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marshall Yuan's NPI active?
- Yes — Marshall Yuan's NPI (1528472958) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.