Cathleen Li, D.O
NPI 1275995490 · Family Medicine Physician · Whittier, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathleen Li, D.O is a Family Medicine Physician provider in Whittier, CA (NPI 1275995490).
Provider details
- NPI number
- 1275995490
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A14494 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
308 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 142 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 125 | $94 |
| Administration of Influenza Virus VaccineG0008 | 15 | $35 |
| Administration of Pneumococcal VaccineG0009 | 14 | $35 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 12 | $129 |
Typical Medicare-allowed amounts for these services range $35–$139 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 111 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 483 | 178 |
| Losartan Potassium | 332 | 125 |
| Amlodipine Besylate | 326 | 109 |
| Metformin Hcl | 230 | 92 |
| Lisinopril | 224 | 82 |
| Levothyroxine Sodium | 198 | 67 |
| Alendronate Sodium |
Practice location
Mailing address
Additional practice locations (1)
- 11500 Brookshire AveDowney, CA 90241-4917Phone: (626) 215-3111
Registry dates
- Enumerated
- 2016-03-26
- Last updated
- 2022-07-21
Frequently asked questions
- What is Cathleen Li's NPI number?
- Cathleen Li's National Provider Identifier (NPI) is 1275995490, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathleen Li's specialty?
- Cathleen Li is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cathleen Li located?
- Cathleen Li's practice location on file with NPPES is 15725 Whittier Blvd Ste 400, Whittier, CA 90603-2338.
- What is Cathleen Li's phone number?
- The practice phone number listed in the NPPES registry for Cathleen Li is (562) 947-1669.
- Does Cathleen Li accept Medicare?
- Cathleen Li is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathleen Li's NPI active?
- Yes — Cathleen Li's NPI (1275995490) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.