Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Stephen Gregory Portera, M.D.
Urology Physician in Memphis, TN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205803608
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Registry record
Entity type Individual (Type 1)
Name Stephen Gregory Portera
Credential M.D.
Sex Male
Practice address 6215 Humphreys Blvd Ste 110, Memphis, TN, 38120
Phone (901) 227-9610
Fax (901) 227-9615
Enumeration date Mar 3, 2006
Last updated in NPPES Mar 30, 2023
Taxonomy & licenses
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 25742 (TN) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3800896 | Medicaid | TN | - |
| 4015978 | Other | TN | BCBST |
| 07659397 | Medicaid | MS | - |
| 04123847 | Medicaid | MS | - |
| 97375 | Other | AR | BCBS AR |
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 specialty is Stephen Portera?
Stephen Portera is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-30.