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

Marissa Lee Fahrbach

Certified Registered Nurse Anesthetist in Boulder, CO · enumerated 2015 · practices at Boulder Valley Gastroenterology Inc..

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

National Provider Identifier

1427430032

Verified

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Registry record

Entity type Individual (Type 1)

Name Marissa Lee Fahrbach

Sex Female

Practice address Boulder, CO, 80301

Phone (303) 604-5000

Fax (720) 890-0364

Enumeration date Jun 19, 2015

Last updated in NPPES Mar 5, 2020

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 103068 (KS) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 557356 (KS) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 0994226 (CO) Primary

Other identifiers

Identifier	Type	State	Issuer
9000171761	Medicaid	CO	-

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 Marissa Fahrbach?

Marissa Fahrbach 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.

Other providers at this practice address

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Joel Montbriand Gastroenterology Physician · Boulder, CO NPI 1417980038 Janice Montoya Medical Physician Assistant · Boulder, CO NPI 1023109360 Richard Moseley Gastroenterology Physician · Boulder, CO NPI 1447343843 Victoria Evelyn Medical Physician Assistant · Boulder, CO NPI 1114332020 Kelly Zucker Gastroenterology Physician · Boulder, CO NPI 1952793846 Boulder Valley Gastroenterology Inc. Gastroenterology Physician · Boulder, CO NPI 1720674955 Brittany Propoggio Physician Assistant · Boulder, CO NPI 1407632870

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-05.