Ninth Avenue Internal Medicine LLC
NPI 1639181126 · Health Service Clinic/Center · Denver, CO
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ninth Avenue Internal Medicine LLC is a Health Service Clinic/Center organization in Denver, CO (NPI 1639181126).
Provider details
- NPI number
- 1639181126
- Entity type
- Organization
- Primary specialty
- Health Service Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Daniel Witten, Managing Partner(303) 394-2152
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-12
- Last updated
- 2007-09-24
Frequently asked questions
- What is Ninth Avenue Internal Medicine LLC's NPI number?
- Ninth Avenue Internal Medicine LLC's National Provider Identifier (NPI) is 1639181126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ninth Avenue Internal Medicine LLC?
- Ninth Avenue Internal Medicine LLC is classified in the NPPES registry as Health Service Clinic/Center (Ambulatory Health Care Facilities).
- Where is Ninth Avenue Internal Medicine LLC located?
- Ninth Avenue Internal Medicine LLC's practice location on file with NPPES is 4500 E 9th Ave, Denver, CO 80220-3900.
- What is Ninth Avenue Internal Medicine LLC's phone number?
- The practice phone number listed in the NPPES registry for Ninth Avenue Internal Medicine LLC is (303) 394-2152.
- Does Ninth Avenue Internal Medicine LLC accept Medicare?
- Ninth Avenue Internal Medicine LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ninth Avenue Internal Medicine LLC?
- The authorized official listed on Ninth Avenue Internal Medicine LLC's NPPES record is Daniel Witten, Managing Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ninth Avenue Internal Medicine LLC's NPI active?
- Yes — Ninth Avenue Internal Medicine LLC's NPI (1639181126) is active in the NPPES registry as of the last update on 2007-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.