NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Douglas Robert Altschuler, DO

Internal Medicine Physician in Aurora, CO · enumerated 2006.

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

National Provider Identifier

1770542177

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Douglas Robert Altschuler
Credential DO
Sex Male
Practice address 14701 E Exposition Ave, Aurora, CO, 80012
Phone (303) 338-4545
Enumeration date Mar 23, 2006
Last updated in NPPES Jun 23, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 50758 (CO) Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 05010645L (PA) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
0018365670003 Medicaid PA -
022427 Other CO KAISER COMMERCIAL NUMBER
41922573 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 Douglas Altschuler practice?
The practice location on file with NPPES is in Aurora, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Douglas Altschuler?
The National Provider Identifier (NPI) for Douglas Altschuler is 1770542177, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-23.