Physician Profile
Unclaimed ProfileAbout MASS
Ann M Mass, MD is a specialist based in Aspen, CO. Ann is also listed as specialising in internal medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Common questions
What does Dr. Mass specialise in?
Dr. Mass is a specialist in Aspen, CO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Specialist”.
NPI registry
Where is Dr. Mass located?
Dr. Mass is listed at 225 N MILL ST STE 116, Aspen, CO 81611. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mass's phone number?
The number on file is (970) 544-1234. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mass's NPI number?
Dr. Mass's National Provider Identifier is 1598769358. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Dr. Mass been practising?
Dr. Mass has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.
NPI registry
Has Dr. Mass confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mass. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (970) 544-1234
- Email not available
Practice Locations
225 N MILL ST STE 116
Aspen, CO 81611
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.