Physician Profile
May Chien, MD
Unclaimed ProfileAbout Dr. Chien
May Chien, MD is a healthcare provider in Palo Alto, CA specializing in pediatric hematology-oncology. May is also listed as specializing in hematology, pediatrics, and internal medicine. According to Medicare claims data, May cared for 98 Medicare patients across 123 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 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
- (650) 723-5535
- Email not available
Practice Locations
1000 WELCH RD STE 300
Palo Alto, CA 94304
1200 N State St CT-A7D
Los Angeles, CA 90033
Conditions Commonly Evaluated or Treated
Within Pediatric Hematology-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
Bleeding & blood symptoms
Bleeding & clotting
- Bleeding Disorders
- Blood Clots in Children
- Blood Clotting Gene Mutation
- Frequent Nosebleeds in Children
- Heavy Periods in Teens
- Unexplained Bruising
Blood clots & circulation
Blood disorders
- Anemia in Children
- Hemolytic Anemia in Children
- High Platelet Count
- High Red Blood Cell Count in Children
- Iron Overload in Children
- Langerhans Cell Histiocytosis
- Low Platelets
- Low White Blood Cell Count in Children
- Myelodysplastic Syndrome
- Thalassemia
Bone & soft tissue cancer
Brain & nerve tumors
General symptoms
Genetic blood disorders
Immune & blood disorders
Red blood cell disorders
Spleen & lymph disorders
Tumors
- Adrenal Tumors in Children
- Bone tumors
- Germ Cell Tumors in Children
- Infantile hemangioma
- Kidney Tumor in Children
- Liver Tumors in Children
- Lymphoma in Children
- Neuroblastoma
- Retinoblastoma
- Soft Tissue Cancer in Children
- Spinal Cord Tumor
- Spinal Cord Tumors in Children
Vascular anomalies
Procedures & services
Biopsies & tests
- Bleeding Disorder Testing
- Bone Marrow Biopsy
- Childhood Cancer Genetic Testing
- Hemoglobin Electrophoresis
- Tumor Biopsy for Children
Cancer treatment
- Chemotherapy for Children
- Immunotherapy for Children
- Lumbar Puncture with Chemo
- Pediatric Cancer Clinical Trials
- Radiation Therapy for Children
- Targeted Cancer Therapy for Children
Catheters & ports
Consultations
Diagnostic lab tests
- Blood Clotting Test
- Factor Level Blood Test
- Flow Cytometry Test
- Peripheral Blood Smear Examination
- Platelet Function Testing
- Reticulocyte Count
Diagnostic procedures
Hematology procedures
Infusions & transfusions
- Blood Exchange Transfusion
- Blood Transfusion Management
- Clotting Factor Replacement
- Iron Chelation Therapy
- Iron Infusion
- IVIG Infusion
- Platelet Transfusion
Interventional procedures
Medication therapies
Monitoring & screening
Radiation oncology
Support & follow-up
- Cancer Survivorship Care for Children
- Child Life Services During Procedures
- Fertility Preservation for Teens Before Cancer Treatment
Supportive care
Surgical evaluations
Transplants & cellular therapy
Urgent oncology care
Vascular access
Procedures Most Often Billed to Medicare
123 services · 98 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
43 | |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
35 | |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
15 | |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
15 | |
| 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 |
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 pediatric hematology 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 pediatric hematology specialists in Palo Alto 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2010 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Chien?
Dr. Chien is a pediatric hematology in Palo Alto, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatric Hematology-Oncology”.
NPI registry
What is Dr. Chien's address?
Dr. Chien is listed at 1000 Welch Rd Ste 300, Palo Alto, CA 94304. 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. Chien?
The number on file is (650) 723-5535. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chien's NPI number?
Dr. Chien's National Provider Identifier is 1417221326. 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. Chien train?
Dr. Chien attended Other, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chien been practicing?
Dr. Chien has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chien perform?
According to Medicare billing data, Dr. Chien 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. Chien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chien. 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.