Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

A-To-Z Anesthesia Associates,P.C.

Anesthesiology Physician in Wayland, MA · enumerated 2014 · authorized official Alexander Zeidel, President.

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

National Provider Identifier

1598166886

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Registry record

Entity type Organization (Type 2)

Legal business name A-To-Z Anesthesia Associates,P.C.

Practice address 212 Oxbow Rd, Wayland, MA, 01778

Phone (857) 998-8934

Fax (866) 245-4796

Enumeration date Sep 6, 2014

Last updated in NPPES Sep 6, 2014

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 227387 (MA) Primary

Authorized official

Name Alexander Zeidel

Title President

Phone (857) 998-8934

Other identifiers

Identifier	Type	State	Issuer
110077463A	Medicaid	MA	-

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 is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is A-To-Z Anesthesia Associates,P.C.?

A-To-Z Anesthesia Associates,P.C. is registered in NPPES as a Anesthesiology Physician (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-06.