Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lowell Greenwall, MD

Anesthesiology Physician in Denver, CO · enumerated 2006 · practices at Children'S Anesthesia, P.C..

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

National Provider Identifier

1689648321

Verified

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Registry record

Entity type Individual (Type 1)

Name Lowell Greenwall

Credential MD

Sex Male

Practice address 455 Sherman St, Ste 510, Denver, CO, 80203

Phone (303) 377-6825

Fax (303) 780-0787

Enumeration date Feb 16, 2006

Last updated in NPPES Apr 18, 2013

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 31429 (CO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1314293	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

Where does Lowell Greenwall practice?

The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Lowell Greenwall?

The National Provider Identifier (NPI) for Lowell Greenwall is 1689648321, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-18.