Physician Profile
Robert James Preston, MD
Unclaimed ProfileAbout Dr. Preston
Based in Los Angeles, CA, Robert James Preston, MD is listed in the NPI registry under critical care (intensivists). Robert is also listed as specializing in emergency medicine and trauma surgery. Medicare claims data shows Robert provided 355 services to 327 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (323) 865-1241
- Email not available
Practice Locations
2051 MARENGO ST DIVISION OF TRAUMA AND CRITICAL CARE USC
Los Angeles, CA 90033
Procedures Most Often Billed to Medicare
355 services · 327 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
179 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
80 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
68 |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
15 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other critical cares in Los Angeles 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Preston specialize in?
Dr. Preston is a critical care (intensivists) in Los Angeles, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CRITICAL CARE (INTENSIVISTS)”.
NPI registry
Where is Dr. Preston located?
Dr. Preston is listed at 2051 MARENGO ST DIVISION OF TRAUMA AND CRITICAL CARE USC, Los Angeles, CA 90033. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Preston's phone number?
The number on file is (323) 865-1241. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Preston?
Dr. Preston's National Provider Identifier is 1538336581. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Preston go to medical school?
Dr. Preston attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Preston have?
Dr. Preston has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Preston do most often?
According to Medicare billing data, Dr. Preston the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Preston's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Preston. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.