Physician Profile
James R. Mason, M.D.
Unclaimed ProfileAbout Dr. Mason
Based in La Jolla, CA, James R. Mason, M.D. is listed in the NPI registry under hematology & oncology. James graduated from University of California, San Francisco School of Medicine in 1984. According to Medicare claims data, James cared for 1,567 Medicare patients across 45,020 services. The services billed most often include injection, azacitidine, 1 mg, injection, daratumumab, 10 mg and hyaluronidase-fihj, and injection, pembrolizumab, 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.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (858) 554-8597
- Email not available
Practice Locations
10710 N TORREY PINES RD
La Jolla, CA 92037
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
Most searched procedures
- Blood transfusion
- Chemotherapy
- Immunotherapy
- Targeted therapy
Biopsies & Diagnostics
- Bone Marrow Biopsy
- Lumbar puncture
- Lymph Node Biopsy
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
- 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
Vascular access care
Procedures Most Often Billed to Medicare
45,020 services · 1,567 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Collection of blood sample from implanted device | Procedure | 36591 |
84 |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
333 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
283 |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
263 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
112 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
106 |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | Treatment | 96366 |
75 |
| Injection, azacitidine, 1 mg | Drug given | J9025 |
14,700 |
| Injection, daratumumab, 10 mg and hyaluronidase-fihj | Drug given | J9144 |
5,400 |
| Injection, pembrolizumab, 1 mg | Drug given | J9271 |
5,000 |
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 5
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 La Jolla 4
Same specialty, same city.
More connections — 21 related providers in 3 groups
Trained at University of California, San Francisco School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at University of California, San Francisco School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Collection of blood sample from implanted device 6
Providers in CA who bill this service to Medicare most often.
Common questions
What does James R. Mason specialize in?
James R. Mason is a cancer specialist in La Jolla, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Where is James R. Mason located?
James R. Mason is listed at 10710 N Torrey Pines Rd, La Jolla, CA 92037. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is James R. Mason's phone number?
The number on file is (858) 554-8597. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is James R. Mason's NPI number?
James R. Mason's National Provider Identifier is 1497717730. 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 James R. Mason train?
James R. Mason attended University of California, San Francisco School of Medicine, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How long has James R. Mason been practicing?
James R. Mason has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What does James R. Mason do most often?
According to Medicare billing data, James R. Mason performs procedures including collection of blood sample from implanted device; provides treatments such as injection of additional new drug or substance into vein and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has James R. Mason confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by James R. Mason. 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.