Kathleen Weiss, MD
NPI 1104077585 · Internal Medicine Physician · Littleton, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen Weiss, MD is a Internal Medicine Physician provider in Littleton, CO (NPI 1104077585).
Provider details
- NPI number
- 1104077585
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 57.015992 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
83 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $128 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 20 | $92 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 17 | $16 |
Typical Medicare-allowed amounts for these services range $16–$128 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 111 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 558 | 144 |
| Atorvastatin Calcium | 516 | 175 |
| Losartan Potassium | 273 | 80 |
| Amlodipine Besylate | 224 | 76 |
| Lisinopril | 215 | 70 |
| Rosuvastatin Calcium | 215 | 69 |
| Simvastatin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-10-03
- Last updated
- 2024-11-18
- Certified
- 2024-11-18
Frequently asked questions
- What is Kathleen Weiss's NPI number?
- Kathleen Weiss's National Provider Identifier (NPI) is 1104077585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Weiss's specialty?
- Kathleen Weiss is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen Weiss located?
- Kathleen Weiss's practice location on file with NPPES is 8199 Southpark Ln, Littleton, CO 80120-5667.
- What is Kathleen Weiss's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Weiss is (303) 730-3332.
- Does Kathleen Weiss accept Medicare?
- Kathleen Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen Weiss's NPI active?
- Yes — Kathleen Weiss's NPI (1104077585) is active in the NPPES registry as of the last update on 2024-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.