Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Mark Henry Leinwand, PA-C
Physician Assistant in Auburn, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255391793
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Registry record
Entity type Individual (Type 1)
Name Mr. Mark Henry Leinwand
Credential PA-C
Sex Male
Practice address 13 North Fulton Street, Auburn, NY, 13021
Phone (315) 255-1171
Fax (315) 252-7801
Enumeration date Mar 27, 2006
Last updated in NPPES Oct 22, 2009
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 464 (NV) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 001190-1 (NY) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 002402042 | Medicaid | NV | - |
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 1255391793 active?
Yes, as of the latest NPPES snapshot, NPI 1255391793 is active (record last updated 2009-10-22).
How do I verify Mark Leinwand's NPI record?
Cross-check NPI 1255391793 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-22.