Physician Profile
Johnny Cai, DO
Unclaimed ProfileAbout Dr. Cai
Johnny Cai, DO practices hematology & oncology in Dublin, CA. Johnny is a 2018 graduate of Touro Un College of Osteopathic Medicine, Vallejo. According to Medicare claims data, Johnny cared for 43 Medicare patients across 53 services. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more.
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
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
- (510) 498-2335
- Email not available
Practice Locations
4000 DUBLIN BLVD
Dublin, CA 94568
14445 Olive View Drive Olive View-UCLA Medical Center Dept of Medicine, 2B-182
Sylmar, CA 91342
3181 SW Sam Jackson Park Rd
Portland, OR 97239
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
53 services · 43 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
21 | Less often than most peers in Hematology & Oncology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
17 | 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 |
15 | 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.
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 Dublin 3
Same specialty, same city.
Trained at Touro Un College of Osteopathic Medicine, Vallejo 3
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2018 at Touro Un College of Osteopathic Medicine, Vallejo 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Cai?
Dr. Cai is a cancer specialist in Dublin, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
What is Dr. Cai's address?
Dr. Cai is listed at 4000 Dublin Blvd, Dublin, CA 94568. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Cai?
The number on file is (510) 498-2335. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Cai's NPI number?
Dr. Cai's National Provider Identifier is 1861998452. 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. Cai train?
Dr. Cai attended Touro Un College of Osteopathic Medicine, Vallejo, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Cai been practicing?
Dr. Cai has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Cai perform?
According to Medicare billing data, Dr. Cai 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. Cai confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Cai. 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.