Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greenwich Anesthesiology Associates, PC

Q: What is the NPI number for Greenwich Anesthesiology Associates, PC?

The NPI for Greenwich Anesthesiology Associates, PC is 1972557486, a Type 2 (organization) record in the CMS NPPES registry.

Anesthesiology Physician in Greenwich, CT · enumerated 2006 · authorized official Paul Sygall, Delegated Official.

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

National Provider Identifier

1972557486

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Registry record

Entity type Organization (Type 2)

Legal business name Greenwich Anesthesiology Associates, PC

Practice address 5 Perryridge Rd, Greenwich, CT, 06830

Phone (203) 579-9464

Enumeration date May 20, 2006

Last updated in NPPES Jan 13, 2022

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians Primary

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Paul Sygall

Title Delegated Official

Phone (203) 579-9464

Other identifiers

Identifier	Type	State	Issuer
004001095	Medicaid	CT	-
500HBA037CT01	Other	CT	BLUE SHIELD

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 the NPI number for Greenwich Anesthesiology Associates, PC?

The NPI for Greenwich Anesthesiology Associates, PC is 1972557486, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Greenwich Anesthesiology Associates, PC?

NPPES lists Paul Sygall (Delegated Official) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-13.