Jennifer Chan, D.O.
NPI 1821433830 · Family Medicine Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Chan, D.O. is a Family Medicine Physician provider in Garden Grove, CA (NPI 1821433830).
Provider details
- NPI number
- 1821433830
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A13890 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 47 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 233 | 77 |
| Rosuvastatin Calcium | 102 | 38 |
| Lisinopril | 96 | 37 |
| Levothyroxine Sodium | 77 | 23 |
| Amlodipine Besylate | 76 | 30 |
| Losartan Potassium | 72 | 23 |
| Atenolol | 65 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-05-03
- Last updated
- 2021-12-01
- Certified
- 2021-12-01
Frequently asked questions
- What is Jennifer Chan's NPI number?
- Jennifer Chan's National Provider Identifier (NPI) is 1821433830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Chan's specialty?
- Jennifer Chan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Chan located?
- Jennifer Chan's practice location on file with NPPES is 12100 Euclid St, Garden Grove, CA 92840-3304.
- What is Jennifer Chan's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Chan is (714) 741-3615.
- Does Jennifer Chan accept Medicare?
- Jennifer Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Chan's NPI active?
- Yes — Jennifer Chan's NPI (1821433830) is active in the NPPES registry as of the last update on 2021-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.