Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jon Ladd, PHD
Psychologist in Middletown, RI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619923414
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Registry record
Entity type Individual (Type 1)
Name Jon Ladd
Credential PHD
Sex Male
Practice address 850 Aquidneck Ave, Middletown, RI, 02842
Phone (401) 474-1422
Fax (401) 842-0360
Enumeration date May 25, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| PENDING | Medicaid | RI | - |
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
What is the NPI number for Jon Ladd?
The National Provider Identifier (NPI) for Jon Ladd is 1619923414, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jon Ladd practice?
The practice location on file with NPPES is in Middletown, RI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Steven Freedman Otolaryngology Physician · Middletown, RI NPI 1912901869 James Dobbin Otolaryngology Physician · Middletown, RI NPI 1164426011 Olga Harbar Nurse Practitioner · Middletown, RI NPI 1184610636 Paul Block Psychologist · Middletown, RI NPI 1295797389 Martha Williams Psychologist · Middletown, RI NPI 1841253150 Nancy Davis Psychologist · Middletown, RI NPI 1881657195 Steven Diehl Psychologist · Middletown, RI NPI 1215988175 Douglas Reid Podiatrist · Middletown, RI NPI 1467477224
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.