Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael Diller, PSYD
Clinical Psychologist in York, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790729705
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Michael Diller
Credential PSYD
Sex Male
Practice address 3550 Concord Rd, York, PA, 17402
Phone (717) 851-6340
Fax (717) 851-6349
Enumeration date Jun 16, 2006
Last updated in NPPES Jun 13, 2016
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License PS008945L (PA) Secondary
103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License PS008945L (PA) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PS008945L (PA) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2176876 | Other | PA | CIGNA BEHAVIORAL HEALTH |
| 231126000 | Other | PA | MAGELLAN |
| 455629 | Other | PA | VALUE OPTIONS |
| DI340545 | Other | PA | PA BLUE SHIELD |
| 01097201 | Other | PA | CAPITAL BLUE CROSS |
| 291102 | Other | PA | MAMSI |
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
Where does Michael Diller practice?
The practice location on file with NPPES is in York, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Diller?
The National Provider Identifier (NPI) for Michael Diller is 1790729705, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Melissa Hertrich Clinical Child & Adolescent Psychologist · York, PA NPI 1730144619 Luis Rivera Clinical Psychologist · York, PA NPI 1972543338 Ann Stipe Clinical Social Worker · York, PA NPI 1821038605 Sherry Richards Clinical Social Worker · York, PA NPI 1073553806 Joseph Motacki Geriatric Psychiatry Physician · York, PA NPI 1982645776 Laura Heltebridle Clinical Psychologist · York, PA NPI 1952343378 Matthew Leisure Social Worker · York, PA NPI 1477595890 Glenn Reeder Clinical Child & Adolescent Psychologist · York, PA NPI 1790727063
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-13.