Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karapet Guyumdzhyan, CRNA

Certified Registered Nurse Anesthetist in Waltham, MA · enumerated 2010.

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

National Provider Identifier

1215257548

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Registry record

Entity type Individual (Type 1)

Name Karapet Guyumdzhyan

Credential CRNA

Sex Male

Practice address 1440 Main St, Waltham, MA, 02451

Phone (781) 891-9300

Fax (781) 891-9305

Enumeration date Jun 9, 2010

Last updated in NPPES Jan 9, 2014

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 3907 (CA) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License RN2278195 (MA) Primary

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

Karapet Guyumdzhyan is registered in NPPES with the primary taxonomy of Certified Registered Nurse Anesthetist. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-09.