Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Prof. Blair J Maerowitz, PA-C
Physician Assistant in Amherst, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235107970
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Registry record
Entity type Individual (Type 1)
Name Prof. Blair J Maerowitz
Credential PA-C
Sex Male
Practice address 29 Cottage Street, B (Pioneer Valley Dermatology), Amherst, MA, 01002
Phone (413) 406-3250
Fax (413) 549-7402
Enumeration date Mar 9, 2006
Last updated in NPPES Mar 15, 2021
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 1521 (MA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 9700340 | Medicaid | MA | - |
| 290001521MA01 | Other | MA | ANTHEM |
| 114411681 | Other | MA | GROUP NPI |
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
How do I verify Blair Maerowitz's NPI record?
Cross-check NPI 1235107970 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1235107970 active?
Yes, as of the latest NPPES snapshot, NPI 1235107970 is active (record last updated 2021-03-15).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-15.