Cathy Tong, M.D.
NPI 1558545277 · Family Medicine Physician · Whittier, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathy Tong, M.D. is a Family Medicine Physician provider in Whittier, CA (NPI 1558545277).
Provider details
- NPI number
- 1558545277
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A102106 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% 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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 140 | 50 |
| Losartan Potassium | 74 | 23 |
| Amlodipine Besylate | 72 | 31 |
| Simvastatin | 55 | 20 |
| Lisinopril | 47 | 17 |
| Metformin Hcl | 46 | 14 |
| Metoprolol Tartrate | 43 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-12-18
- Last updated
- 2021-12-29
- Certified
- 2021-12-29
Frequently asked questions
- What is Cathy Tong's NPI number?
- Cathy Tong's National Provider Identifier (NPI) is 1558545277, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathy Tong's specialty?
- Cathy Tong is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cathy Tong located?
- Cathy Tong's practice location on file with NPPES is 12291 Washington Blvd, Whittier, CA 90606-2500.
- What is Cathy Tong's phone number?
- The practice phone number listed in the NPPES registry for Cathy Tong is (562) 698-0811.
- Does Cathy Tong accept Medicare?
- Cathy Tong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathy Tong's NPI active?
- Yes — Cathy Tong's NPI (1558545277) is active in the NPPES registry as of the last update on 2021-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.