John Tsao, MD
NPI 1194736082 · Endocrinology, Diabetes & Metabolism Physician · Torrance, CA
John Tsao, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Torrance, CA (NPI 1194736082).
Provider details
- NPI number
- 1194736082
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- C23235 (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
19 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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 20 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2013-08-02
Frequently asked questions
- What is John Tsao's NPI number?
- John Tsao's National Provider Identifier (NPI) is 1194736082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tsao's specialty?
- John Tsao is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is John Tsao located?
- John Tsao's practice location on file with NPPES is 20911 Earl St Ste 340, Torrance, CA 90503-4354.
- What is John Tsao's phone number?
- The practice phone number listed in the NPPES registry for John Tsao is (310) 542-6333.
- Is John Tsao's NPI active?
- Yes — John Tsao's NPI (1194736082) is active in the NPPES registry as of the last update on 2013-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.