Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lawrence J Alter, MD
Urology Physician in Irving, TX · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1568457141
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Registry record
Entity type Individual (Type 1)
Name Lawrence J Alter
Credential MD
Sex Male
Practice address 7200 State Highway 161, Suite 200, Irving, TX, 75039
Phone (817) 303-4521
Fax (972) 401-4930
Enumeration date Sep 20, 2005
Last updated in NPPES May 24, 2016
Taxonomy & licenses
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 |
|---|---|---|---|
| 122446103 | Medicaid | TX | - |
| 122446108 | Medicaid | TX | - |
| 122446106 | Medicaid | TX | - |
| 122446107 | Other | TX | MEDICAID OTHER |
| 122446105 | Medicaid | TX | - |
| 122446104 | Medicaid | TX | - |
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
Where does Lawrence Alter practice?
The practice location on file with NPPES is in Irving, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Lawrence Alter?
The National Provider Identifier (NPI) for Lawrence Alter is 1568457141, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-24.