Physician Profile
George Hajjar, MD
Unclaimed ProfileAbout Dr. Hajjar
George Hajjar, MD is a healthcare provider in Santa Clarita, CA specializing in hematology & oncology. Medicare claims data shows George provided 14,188 services to 860 patients. The services billed most often include injection, pembrolizumab, 1 mg, injection, aprepitant, 1 mg, and injection, denosumab, 1 mg.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (661) 799-1999
- Email not available
Practice Locations
23823 VALENCIA BLVD STE 250
Santa Clarita, CA 91355
15031 Rinaldi St Ste 150
Mission Hills, CA 91345
465 W Putnam Ave
Porterville, CA 93257
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
- Cancer That Has Spread
Blood & Lymph Disorders
- Enlarged spleen
- Swollen Lymph Nodes
Blood Cancers
- Multiple Myeloma
- Myelodysplastic Syndrome
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
- Bone tumors
- Soft-tissue sarcoma
Digestive Cancers
- Esophageal cancer
- Liver cancer
- Pancreatic cancer
- Stomach cancer
Endocrine Cancers
- Thyroid cancer
Endocrine tumors
- Neuroendocrine Tumors
Gastrointestinal cancer
- Anal cancer
- Appendix cancer
- Bile duct cancer
- Gallbladder cancer
General oncology
- Cancer of unknown primary
Genetic Blood Disorders
- Sickle cell disease
- Thalassemia
Gynecologic cancer
- Vulvar cancer
Gynecologic Cancers
- Cervical cancer
- Endometrial cancer
- Ovarian cancer
Head & Neck Cancers
- Oral cancer
Head and neck cancer
- Laryngeal cancer
- Oral cavity cancer
Neurologic Cancers
- Brain tumor
Oncologic emergencies
- High calcium from cancer
Ophthalmologic oncology
- Melanoma of the eye
Skin cancer
- Skin cancer
Skin Cancers
- Melanoma
Urologic Cancers
- Bladder cancer
- Kidney cancer
- Testicular cancer
Procedures & services
Most searched procedures
- Blood transfusion
- Chemotherapy
- Immunotherapy
- Targeted therapy
Biopsies & Diagnostics
- Bone Marrow Biopsy
- Lumbar puncture
- Lymph Node Biopsy
Blood disorder care
- Blood Exchange Transfusion
- Photopheresis
Cancer Therapies
- Hormone Therapy For Cancer
Cancer therapy
- Chemo allergy desensitization
- Oral chemotherapy management
- Radiation oncology consultation
- Spinal chemo injection
Cellular Therapies
- CAR-T Therapy
- Stem Cell Transplant
Consultations
- Cancer Survivorship Care Plan
- Clinical Trial Screening
- Second Opinion For Cancer
Diagnostic testing
- Circulating tumor cell test
Hematology Treatments
- Blood Clot Management
- Plasmapheresis
- PRP Injection
- Therapeutic Blood Draw
Imaging
- PET Scan
Infusions
- Clotting Factor Replacement
- Iron Infusion
- IV fluids
- IVIG Infusion
Interventional oncology
- Radiofrequency ablation
- TACE Chemoembolization
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
- Cancer Genetic Testing
- Cancer Tumor Profiling
- Liquid Biopsy
Vascular access care
- Chemo port check
- Chemo Port Flush And Maintenance
- PICC line dressing change
Procedures Most Often Billed to Medicare
14,188 services · 860 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Instillation of anti-cancer drug into bladder | Procedure | 51720 |
39 | Too few peers to compare |
| Collection of blood sample from implanted device | Procedure | 36591 |
39 | As often as other peers in Hematology & Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
207 | As often as other peers in Hematology & Oncology |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
120 | Less often than most peers in Hematology & Oncology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
80 | Less often than most peers in Hematology & Oncology |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
73 | As often as other peers in Hematology & Oncology |
| Administration of additional new drug or substance into vein, 1 hour or less | Treatment | 96417 |
59 | As often as other peers in Hematology & Oncology |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
33 | Less often than most peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
32 | Less often than most peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | Treatment | 96367 |
28 | 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 2
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 Santa Clarita 4
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Instillation of anti-cancer drug into bladder 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Hajjar's specialty?
Dr. Hajjar is a cancer specialist in Santa Clarita, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Where can I find Dr. Hajjar?
Dr. Hajjar is listed at 23823 Valencia Blvd Ste 250, Santa Clarita, CA 91355. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Hajjar?
The number on file is (661) 799-1999. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Hajjar?
Dr. Hajjar's National Provider Identifier is 1619978715. 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
What is Dr. Hajjar's medical education?
Dr. Hajjar attended Other, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Hajjar have?
Dr. Hajjar has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Hajjar known for?
According to Medicare billing data, Dr. Hajjar performs procedures including instillation of anti-cancer drug into bladder and collection of blood sample from implanted device; provides treatments such as administration of chemotherapy into vein, 1 hour or less and injection of additional new drug or substance into vein, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Hajjar's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hajjar. 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.