Cathie Chung, M.D.
NPI 1679599914 · Medical Oncology Physician · Duarte, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathie Chung, M.D. is a Medical Oncology Physician provider in Duarte, CA (NPI 1679599914).
Provider details
- NPI number
- 1679599914
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A61664 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,429 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 804 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 798 | $10 |
| Immunologic Analysis for Detection of Tumor Antigen, Quantitative; Ca 15-386300 | 718 | $20 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 683 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 521 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 215 | 57 |
| Anastrozole | 97 | 27 |
| Exemestane | 78 | 24 |
| Tamoxifen Citrate | 75 | 17 |
| Ribociclib Succinatebrand: Kisqali | 31 | — |
| Abemaciclibbrand: Verzenio | 24 | — |
| Dexamethasone | 20 | — |
| Ondansetron Hcl | 18 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2016-03-24
Frequently asked questions
- What is Cathie Chung's NPI number?
- Cathie Chung's National Provider Identifier (NPI) is 1679599914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathie Chung's specialty?
- Cathie Chung is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Cathie Chung located?
- Cathie Chung's practice location on file with NPPES is 1500 East Duarte Road, Duarte, CA 91010.
- What is Cathie Chung's phone number?
- The practice phone number listed in the NPPES registry for Cathie Chung is (626) 256-4673.
- Does Cathie Chung accept Medicare?
- Cathie Chung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathie Chung's NPI active?
- Yes — Cathie Chung's NPI (1679599914) is active in the NPPES registry as of the last update on 2016-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.