Karen Heather Koser, MD
Developmental - Behavioral Pediatrics Physician · Los Angeles, CA
Karen Heather Koser, MD is a developmental - behavioral pediatrics physician with a practice address in Los Angeles, California, and NPI 1861703787, issued on Jun 24, 2010. Check the license (California C162529, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Karen Heather Koser
- Credential
- MD
- Primary taxonomy
- Developmental - Behavioral Pediatrics Physician 2080P0006X
- License numbers
- C162529 CA
264944 NY
Self-reported in NPPES; status is on the state search - Practice location
- Children's Hospital OF Los Angeles, Los Angeles, CA 90027
- Phone
- (323) 361-3849
- Enumerated
- Jun 24, 2010
- Record last updated
- Jan 19, 2023
- Entity
- Type 1 · individual
Verify Karen Heather Koser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C162529Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Developmental - Behavioral Pediatrics Physician providers in California
There are 160 developmental - behavioral pediatrics physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other developmental - behavioral pediatrics physician records in California
- Roger Akins, D.O.Sacramento, CA1881666055
- Roxanne Almas, M.D.San Jose, CA1538320916
- Kathleen Angkustsiri, MDSacramento, CA1851311344
- David Ansel, MDPalo Alto, CA1376547612
- Dejeunee Ashby, MDLos Angeles, CA1326561630
- Melissa AultHuntington Beach, CA1629795075
- Leonard Baker, M.D.La Canada, CA1255453627
- Yair Bannett, MDPalo Alto, CA1558848531
- Elizabeth Barrington, MDPalo Alto, CA1992224836
- Anshu Batra, M.D.Los Angeles, CA1356560767
Common questions
What is Karen Heather Koser, MD's NPI number?
Karen Heather Koser, MD's National Provider Identifier (NPI) is 1861703787, issued on Jun 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Karen Heather Koser, MD located?
The NPPES record lists a practice address at Children's Hospital OF Los Angeles, Los Angeles, CA, 90027. Phone: (323) 361-3849. Providers update this record themselves, so call before visiting.
How can I verify Karen Heather Koser, MD's license?
NPPES lists California license number C162529, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.