Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. William Carl Rivera, CRNA

Certified Registered Nurse Anesthetist in Concord, NH · enumerated 2006.

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

National Provider Identifier

1205995529

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Registry record

Entity type Individual (Type 1)

Name Mr. William Carl Rivera

Credential CRNA

Sex Male

Practice address Concord, NH, 03301

Phone (603) 228-7211

Enumeration date Dec 6, 2006

Last updated in NPPES Dec 30, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License RN59997 (DC) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License R115089 (MD) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 0024165528 (VA) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 084359-23 (NH) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
409194900	Medicaid	MD	-

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

Is NPI 1205995529 active?

Yes, as of the latest NPPES snapshot, NPI 1205995529 is active (record last updated 2023-12-30).

How do I verify William Rivera's NPI record?

Cross-check NPI 1205995529 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Savoun Charbonneau Certified Registered Nurse Anesthetist · Concord, NH NPI 1932496171 Alyssa Kessler Certified Registered Nurse Anesthetist · Concord, NH NPI 1720411234

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-30.