John Kao, MD
NPI 1568780468 · Internal Medicine Physician · Irvine, CA
John Kao, MD is a Internal Medicine Physician provider in Irvine, CA (NPI 1568780468).
Provider details
- NPI number
- 1568780468
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A117555 (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
16 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 · 109 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 550 | 206 |
| Amlodipine Besylate | 398 | 148 |
| Lisinopril | 332 | 118 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 237 | 46 |
| Metformin Hcl | 229 | 88 |
| Losartan Potassium | 227 | 85 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-17
- Last updated
- 2021-11-30
Frequently asked questions
- What is John Kao's NPI number?
- John Kao's National Provider Identifier (NPI) is 1568780468, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kao's specialty?
- John Kao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Kao located?
- John Kao's practice location on file with NPPES is 16300 Sand Canyon Ave Ste 311, Irvine, CA 92618-3703.
- What is John Kao's phone number?
- The practice phone number listed in the NPPES registry for John Kao is (949) 791-3001.
- Is John Kao's NPI active?
- Yes — John Kao's NPI (1568780468) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.