Kathleen Mayer, MD
NPI 1457488439 · Internal Medicine Physician · Denver, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen Mayer, MD is a Internal Medicine Physician provider in Denver, CO (NPI 1457488439).
Provider details
- NPI number
- 1457488439
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 37902 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2007-02-27
- Last updated
- 2025-03-14
- Certified
- 2025-03-14
Frequently asked questions
- What is Kathleen Mayer's NPI number?
- Kathleen Mayer's National Provider Identifier (NPI) is 1457488439, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Mayer's specialty?
- Kathleen Mayer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen Mayer located?
- Kathleen Mayer's practice location on file with NPPES is 3000 Lawrence St # 101, Denver, CO 80205-3422.
- What is Kathleen Mayer's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Mayer is (720) 689-5269.
- Does Kathleen Mayer accept Medicare?
- Kathleen Mayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen Mayer's NPI active?
- Yes — Kathleen Mayer's NPI (1457488439) is active in the NPPES registry as of the last update on 2025-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.