John Ko, MD
NPI 1972605541 · Cardiovascular Disease Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ko, MD is a Cardiovascular Disease Physician provider in Sacramento, CA (NPI 1972605541).
Provider details
- NPI number
- 1972605541
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A99005 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 57 | 21 |
| Metoprolol Succinate | 34 | 13 |
| Furosemide | 32 | 19 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 28 | 16 |
| Metoprolol Tartrate | 24 | — |
| Lisinopril | 19 | — |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,296 across 33 records (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
- 2006-09-02
- Last updated
- 2021-12-22
- Certified
- 2020-02-13
Frequently asked questions
- What is John Ko's NPI number?
- John Ko's National Provider Identifier (NPI) is 1972605541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ko's specialty?
- John Ko is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Ko located?
- John Ko's practice location on file with NPPES is 6600 Bruceville Rd, Sacramento, CA 95823-4671.
- What is John Ko's phone number?
- The practice phone number listed in the NPPES registry for John Ko is (916) 688-4000.
- Does John Ko accept Medicare?
- John Ko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ko's NPI active?
- Yes — John Ko's NPI (1972605541) is active in the NPPES registry as of the last update on 2021-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.