Ralph Koek, M.D.
Psychiatry Physician · Calabasas, CA
Ralph Koek, M.D. is a psychiatry physician with a practice address in Calabasas, California, and NPI 1356428924, issued on Nov 1, 2006. Check the license (California G058707, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ralph Koek
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G058707 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26585 West Agoura Blvd., Calabasas, CA 91301
- Phone
- (818) 876-1050
- Enumerated
- Nov 1, 2006
- Entity
- Type 1 · individual
Verify Ralph Koek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G058707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
The practice group's Medicare quality score for 2023: 91.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
15 psychiatry physician records list a Calabasas practice address
They are 15 of the 786 NPPES records with a Calabasas practice address, and 7,890 psychiatry physician records in California.
All 15 in Calabasas → All 7,890 in California → Every provider in Calabasas →
Other psychiatry physician records in California
- Nancy Aaen, MDNapa, CA1609816669
- Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
- Mekabiz Abaian, MDSan Bernardino, CA1891090163
- Kafia Abbasi, M.D.French Camp, CA1215114897
- Michele Abbasi, M.D.Westlake Village, CA1093940330
- Zohaib AbbasiMartinez, CA1013392224
- Chester Abbott, M.D.Pasadena, CA1053442186
- Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
- Ezzat Abdelmalek, M.DDana Point, CA1992828826
- Ahmed AbdelrazekSacramento, CA1669092128
Common questions
What is Ralph Koek, M.D.'s NPI number?
Ralph Koek, M.D.'s National Provider Identifier (NPI) is 1356428924, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ralph Koek, M.D. located?
The NPPES record lists a practice address at 26585 West Agoura Blvd., Calabasas, CA, 91301. Phone: (818) 876-1050. Providers update this record themselves, so call before visiting.
How can I verify Ralph Koek, M.D.'s license?
NPPES lists California license number G058707, 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.
What is Ralph Koek, M.D.'s Medicare quality score?
The 2023 MIPS final score is 91.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.