Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ronald J May, PHD
Psychologist in Madison, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497711899
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Registry record
Entity type Individual (Type 1)
Name Dr. Ronald J May
Credential PHD
Sex Male
Practice address 7617 Mineral Point Rd, Ste 300, Madison, WI, 53717
Phone (608) 833-9290
Fax (608) 833-9691
Enumeration date Apr 25, 2006
Last updated in NPPES Jan 19, 2011
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 1143-057 (WI) Secondary
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 |
|---|---|---|---|
| 999000346 | Other | WI | WPS |
| 39089900 | Medicaid | WI | - |
| 10538 | Other | WI | DEAN HEALTH CARE |
| 39088900 | Medicaid | WI | - |
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 Ronald May?
Ronald May 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 → Linda Albert Clinical Social Worker · Madison, WI NPI 1396713723 Kimberly Bean Clinical Social Worker · Madison, WI NPI 1508822396 Ben Green Clinical Psychologist · Madison, WI NPI 1104882927 Kathleen Schneider-Braus Psychiatry Physician · Madison, WI NPI 1619934569 Suzanne Drennan Psychologist · Madison, WI NPI 1598722738 Laurie Smith Clinical Child & Adolescent Psychologist · Madison, WI NPI 1174566285 Emely Verba Clinical Social Worker · Madison, WI NPI 1881623742 Gary Mijal Clinical Social Worker · Madison, WI NPI 1285666362
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-19.