Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Steven K Diehl, PHD
Psychologist in Middletown, RI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215988175
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Registry record
Entity type Individual (Type 1)
Name Steven K Diehl
Credential PHD
Sex Male
Practice address 850 Aquidneck Ave, Middletown, RI, 02842
Phone (401) 440-7927
Fax (401) 842-0360
Enumeration date May 15, 2006
Last updated in NPPES Jul 22, 2008
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 |
|---|---|---|---|
| 412175 | Other | RI | BCHIP |
| 411814 | Other | RI | MEDICARE GROUP NUMBER |
| SD32151 | Other | RI | HARVARD PILGRIM |
| 291415 | Other | RI | BCBS |
| 10301100 | Other | RI | NHP |
| SD32151 | 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
Is NPI 1215988175 active?
Yes, as of the latest NPPES snapshot, NPI 1215988175 is active (record last updated 2008-07-22).
How do I verify Steven Diehl's NPI record?
Cross-check NPI 1215988175 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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 Jon Ladd Psychologist · Middletown, RI NPI 1619923414 Douglas Reid Podiatrist · Middletown, RI NPI 1467477224
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-22.