Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew E Werchniak, MD

Dermatology Physician in Portsmouth, NH · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1023075710

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Andrew E Werchniak

Credential MD

Sex Male

Practice address 330 Borthwick Ave Ste 303, Seacoast Dermatology Pllc, Portsmouth, NH, 03801

Phone (603) 431-5205

Fax (603) 436-4257

Enumeration date Apr 27, 2006

Last updated in NPPES Oct 2, 2025

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 220406 (MA) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 11723 (NH) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Andrew Werchniak?

Andrew Werchniak is registered in NPPES with the primary taxonomy of Dermatology 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-02.