Physician Profile
Unclaimed ProfileAbout CHUNG
Rex Tong Hyun Chung, M.D. practises critical care (intensivists) in Loma Linda, CA. Rex is a 2005 graduate of Icahn School of Medicine at Mount Sinai. Rex is also listed as specialising in surgery and surgical critical care.
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
Areas of Expertise
Common questions
What does Dr. Chung specialise in?
Dr. Chung is a critical care (intensivists) in Loma Linda, 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. Chung located?
Dr. Chung is listed at 11175 CAMPUS ST RM 21008, Loma Linda, CA 92350. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chung's phone number?
The number on file is (909) 558-8131. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chung's NPI number?
Dr. Chung's National Provider Identifier is 1003021882. 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. Chung go to medical school?
Dr. Chung attended Icahn School of Medicine at Mount Sinai, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chung been practising?
Dr. Chung has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Chung do most often?
According to Medicare billing data, Dr. Chung 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
Has Dr. Chung confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chung. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (909) 558-8131
- Email not available
Practice Locations
11175 CAMPUS ST RM 21008
Loma Linda, CA 92350
Procedures Most Often Billed to Medicare
585 services · 346 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
210 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
179 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
58 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
54 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
48 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
20 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
16 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated 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 Loma Linda 8
Same specialty, same city.
Trained at Icahn School of Medicine at Mount Sinai 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 Icahn School of Medicine at Mount Sinai 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.