Joyce Chou, M.D.
NPI 1497017503 · Internal Medicine Physician · Cerritos, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Chou, M.D. is a Internal Medicine Physician provider in Cerritos, CA (NPI 1497017503).
Provider details
- NPI number
- 1497017503
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 418 | 152 |
| Amlodipine Besylate | 248 | 105 |
| Losartan Potassium | 193 | 82 |
| Simvastatin | 174 | 60 |
| Lisinopril | 169 | 70 |
| Levothyroxine Sodium | 152 | 57 |
| Atenolol | 130 | 51 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-13
- Last updated
- 2021-11-17
- Certified
- 2021-11-17
Frequently asked questions
- What is Joyce Chou's NPI number?
- Joyce Chou's National Provider Identifier (NPI) is 1497017503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Chou's specialty?
- Joyce Chou is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Chou located?
- Joyce Chou's practice location on file with NPPES is 10820 183rd St, Cerritos, CA 90703-8013.
- What is Joyce Chou's phone number?
- The practice phone number listed in the NPPES registry for Joyce Chou is (800) 823-4040.
- Does Joyce Chou accept Medicare?
- Joyce Chou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Chou's NPI active?
- Yes — Joyce Chou's NPI (1497017503) is active in the NPPES registry as of the last update on 2021-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.