Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sidney Greenberg, O.D.
Optometrist in Russellville, AL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1548342660
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Registry record
Entity type Individual (Type 1)
Name Dr. Sidney Greenberg
Credential O.D.
Sex Male
Practice address 523 Gandy St Ne, Ste. A, Russellville, AL, 35653
Phone (205) 208-9955
Fax (888) 561-0756
Enumeration date Oct 19, 2006
Last updated in NPPES Oct 7, 2015
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 051059359 | Other | AL | BCBS OF AL |
| 000059359 | Medicaid | AL | - |
| 051527188 | Other | AL | BCBS OF AL |
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 Sidney Greenberg?
The National Provider Identifier (NPI) for Sidney Greenberg is 1548342660, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sidney Greenberg practice?
The practice location on file with NPPES is in Russellville, AL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → William B. Wilkinson, MD PC Specialist · Russellville, AL NPI 1245296060 Azalea Ob/Gyn, PC Obstetrics & Gynecology Physician · Russellville, AL NPI 1740383983 Stuart Greenberg Optometrist · Russellville, AL NPI 1780766824 Russellville Physician Practices LLC Obstetrics & Gynecology Physician · Russellville, AL NPI 1649442369 Russellville Physician Practices LLC Surgery Physician · Russellville, AL NPI 1528377983 Health Care for Life Al, LLC Optometrist · Russellville, AL NPI 1265794598
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-07.