Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Margaret Schadler, PH.D.
Psychologist in Oakland, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528126497
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Registry record
Entity type Individual (Type 1)
Name Dr. Margaret Schadler
Credential PH.D.
Sex Female
Practice address 3900 Broadway, Building 1, Room 312, Oakland, CA, 94611
Phone (510) 752-6701
Enumeration date Dec 4, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY10713 (CA) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Margaret Schadler?
Margaret Schadler is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Jill Rodgers-Quaye Clinical Psychologist · Oakland, CA NPI 1992866479 Jeth Gold Clinical Social Worker · Oakland, CA NPI 1750443818 Nan Shaw Clinical Social Worker · Oakland, CA NPI 1235292624 Gayle Coleman Clinical Social Worker · Oakland, CA NPI 1861558066 Mary De Luna Clinical Social Worker · Oakland, CA NPI 1326198722 Linda O'Brien Adult Psychiatric/Mental Health Registered Nurse · Oakland, CA NPI 1770639106 Elizabeth Colt Clinical Social Worker · Oakland, CA NPI 1609912534 George Lamb Clinical Social Worker · Oakland, CA NPI 1467599795
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.