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Edit this profileWhere to find Timothy E. Byun, MD
- Orange location main office
805 W la Veta Ave Ste 101, Orange, CA 92868 - Orange location
1010 W La Veta Ave, #200, Orange, CA 92868
About Dr. Byun
Based in Orange, CA, Timothy E. Byun, MD is listed in the NPI registry under hematology & oncology. Timothy graduated from Rush Medical College of Rush University in 1998. According to Medicare claims data, Timothy cared for 678 Medicare patients across 1,142 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes. NPI 1871545012 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (714) 835-1800
- Email not available
Practice Locations
805 W LA VETA AVE STE 101
Orange, CA 92868
1010 W La Veta Ave #200
Orange, CA 92868
Conditions Commonly Evaluated or Treated
Within Hematology and Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Anemia
- Blood clots
- Breast cancer
- Colon cancer
- Iron-deficiency anemia
- Leukemia
- Lung cancer
- Lymphoma
- Prostate cancer
Advanced Cancers
Blood & Lymph Disorders
Blood Cancers
Blood Disorders
- Bleeding Disorders
- Blood Clot in Lung
- Blood Clotting Gene Mutation
- Deep vein thrombosis
- Hemochromatosis
- High Platelet Count
- High White Blood Cell Count
- Low Platelets
- Low White Blood Cell Count
- Thick Blood
- Unexplained Bruising
Blood disorders
- Bone Marrow Scarring
- Hemolytic Anemia in Children
- Pre-Myeloma Protein In Blood
- Vitamin B12 deficiency anemia
Bone & Soft Tissue Cancers
Digestive Cancers
Endocrine Cancers
Endocrine tumors
Gastrointestinal cancer
General oncology
Genetic Blood Disorders
Gynecologic cancer
Gynecologic Cancers
Head & Neck Cancers
Head and neck cancer
Neurologic Cancers
Oncologic emergencies
Ophthalmologic oncology
Skin cancer
Skin Cancers
Urologic Cancers
Procedures & services
Biopsies & Diagnostics
Cancer care
Pain & wellness
Most searched procedures
Blood disorder care
Cancer Therapies
Cancer therapy
- Chemo allergy desensitization
- Oral chemotherapy management
- Radiation oncology consultation
- Spinal chemo injection
Cellular Therapies
Consultations
Diagnostic testing
Hematology Treatments
Imaging
Infusions
Interventional oncology
Supportive Cancer Care
- Bone Strengthening Injections For Cancer
- Pain Management For Cancer
- Red Blood Cell Booster Shot
- White Blood Cell Booster Injection
Supportive cancer care
- Cancer nutrition counseling
- Chemo brain treatment
- Cold cap therapy for hair loss
- Fertility Preservation for Teens Before Cancer Treatment
- Hyperbaric oxygen for radiation damage
- Lymphedema Drainage Therapy
- Palliative cancer care
Surgical & Vascular Access
- Chemo port placement
- Chemo port removal
- Draining lung fluid
- Paracentesis
- PICC line placement coordination
Testing & Genetics
Vascular access care
Procedures Most Often Billed to Medicare
1,142 services · 678 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
67 | Less often than most peers in Hematology & Oncology |
| Biopsy and aspiration of bone marrow sample for diagnosis | Procedure | 38222 |
12 | Less often than most peers in Hematology & Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
46 | Less often than most peers in Hematology & Oncology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
30 | Less often than most peers in Hematology & Oncology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
457 | More often than most peers in Hematology & Oncology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
236 | More often than most peers in Hematology & Oncology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
74 | As often as other peers in Hematology & Oncology |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
69 | Less often than most peers in Hematology & Oncology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
39 | More often than most peers in Hematology & Oncology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
34 | Less often than most peers in Hematology & Oncology |
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.
Other cancer specialists at this location 1
Same specialty, same street address — most likely the same department or group.
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 cancer specialists in Orange 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Rush Medical College of Rush University 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at Rush Medical College of Rush University 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Byun specialize in?
Dr. Byun is a cancer specialist in Orange, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Where is Dr. Byun located?
Dr. Byun is listed at 805 W la Veta Ave Ste 101, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Byun's phone number?
The number on file is (714) 835-1800. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Byun's NPI number?
Dr. Byun's National Provider Identifier is 1871545012. 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. Byun go to medical school?
Dr. Byun attended Rush Medical College of Rush University, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Byun been practicing?
Dr. Byun has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Byun do most often?
According to Medicare billing data, Dr. Byun performs procedures including insertion of needle into vein for collection of blood sample and biopsy and aspiration of bone marrow sample for diagnosis; provides treatments such as administration of chemotherapy into vein, 1 hour or less and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Byun confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Byun. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.