John Y. Ko, MD
Cardiovascular Disease Physician · Sacramento, CA
John Y. Ko, MD is a cardiovascular disease physician with a practice address in Sacramento, California, and NPI 1972605541, issued on Sep 2, 2006. Check the license (California A99005, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Y. Ko
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A99005 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6600 Bruceville RD, Sacramento, CA 95823
- Phone
- (916) 688-4000
- Enumerated
- Sep 2, 2006
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (916) 688-6462
- Medicare enrollment
- Enrolled (PECOS I20110718000165); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 6600 Bruceville RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arlene Abellana, RCP,RRT,RPSGTRegistered Respiratory Therapist1942771704
- Olana Aberra, MDHospitalist Physician1376621011
- Rola Aboueljoud, DPTPhysical Therapist1275241986
- Fatima Abutin, M.DHospitalist Physician1740558451
- Chelsea Adams, DPTPhysical Therapist1215324645
- Jacob Adams, MDPsychiatry Physician1326126822
Verify John Y. Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99005Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
425 Medicare Part D claims for 125 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium57 claims
- Metoprolol Succinate34 claims
- Furosemide32 claims
- Clopidogrel28 claims
- Metoprolol Tartrate24 claims
- Lisinopril19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,295.73
33 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Permanente Medical Group IncManteca, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Y. Ko among 2,574 cardiovascular disease physician records in California
John Y. Ko, MD is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2004 · median 1999 among the 1,742 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Sacramento → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- William Auch, MDSacramento, CA 958231881746006
- Rajbarinder Hundal, MDSacramento, CA 958231720266059
- Kristi Jones, MDSacramento, CA 958231275611998
- Lee Tzu Lin, MDSacramento, CA 958231730246984
- Peter Miles, M.D.Sacramento, CA 958231326068545
- Peter Mohr, MDSacramento, CA 958231194747238
- Stephen Morrissy, MD, PHDSacramento, CA 958231811154123
- Steven Rose, MDSacramento, CA 958231316025075
Common questions
What is John Y. Ko, MD's NPI number?
John Y. Ko, MD's National Provider Identifier (NPI) is 1972605541, issued on Sep 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Y. Ko, MD located?
The NPPES record lists a practice address at 6600 Bruceville RD, Sacramento, CA, 95823. Phone: (916) 688-4000. Providers update this record themselves, so call before visiting.
How can I verify John Y. Ko, MD's license?
NPPES lists California license number A99005, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Y. Ko, MD prescribe under Medicare Part D?
In 2024, John Y. Ko, MD had 425 Medicare Part D claims for 125 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.