npidata.org Sign in
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbySpecialtiesEvery NUCC taxonomy, with counts by state and cityStatesProvider counts and breakdowns for all 50 statesPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs API
About
About usTermsPrivacyContact us

Search › Colorado › Family Medicine Physician

James Cassleman, M.D

NPI 1659691863 · on the registry since 2010 · sole proprietor

Practice

Address
275 S Aspen St
Aurora, CO 80011
Phone
(720) 847-9355
Clinicians at this address
5

Registry record

Primary taxonomy
Family Medicine Physician
207Q00000X
Licence states on file
VA
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2026-03-25
Status
Not present in the most recent federal file

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in Colorado