Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassana Marie Littler, M.D.

Pediatrics Physician in Denver, CO · enumerated 2007.

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

National Provider Identifier

1487851069

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Cassana Marie Littler

Credential M.D.

Sex Female

Practice address 777 Bannock St, Denver, CO, 80204

Phone (303) 436-6000

Fax (303) 602-8176

Enumeration date Jun 28, 2007

Last updated in NPPES Jan 10, 2022

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License DR.0048907 (CO) Primary

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

Where does Cassana Littler 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 Cassana Littler?

The National Provider Identifier (NPI) for Cassana Littler is 1487851069, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Wing Hsieh Optometrist · Denver, CO NPI 1891799672 Teresa Wilcox Adult Health Nurse Practitioner · Denver, CO NPI 1316941735 Walter Biffl Surgery Physician · Denver, CO NPI 1962408260 Daniel Hammond Family Nurse Practitioner · Denver, CO NPI 1841296456 Elizabeth Cookson Psychiatry Physician · Denver, CO NPI 1508866831 Eric Peterson Family Medicine Physician · Denver, CO NPI 1639179989 Margaret Tomcho Pediatrics Physician · Denver, CO NPI 1528069457 Mark Berman Oral and Maxillofacial Surgery (Dentist) · Denver, CO NPI 1174524334

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-10.