Riannon Atwater, MD
NPI 1952043374 · Hospitalist Physician · Denver, CO
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Riannon Atwater, MD is a Hospitalist Physician provider in Denver, CO (NPI 1952043374).
Provider details
- NPI number
- 1952043374
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Losartan Potassium | 28 |
| Levothyroxine Sodium | 25 |
| Metoprolol Succinate | 24 |
| Rosuvastatin Calcium | 22 |
| Atorvastatin Calcium | 22 |
| Metformin Hcl | 19 |
| Trazodone Hcl | 19 |
| Apixabanbrand: Eliquis | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-07
- Last updated
- 2026-05-27
- Certified
- 2026-05-27
Frequently asked questions
- What is Riannon Atwater's NPI number?
- Riannon Atwater's National Provider Identifier (NPI) is 1952043374, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Riannon Atwater's specialty?
- Riannon Atwater is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Riannon Atwater located?
- Riannon Atwater's practice location on file with NPPES is 777 Bannock St, Denver, CO 80204-4597.
- What is Riannon Atwater's phone number?
- The practice phone number listed in the NPPES registry for Riannon Atwater is (303) 436-6000.
- Does Riannon Atwater accept Medicare?
- Riannon Atwater is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Riannon Atwater's NPI active?
- Yes — Riannon Atwater's NPI (1952043374) is active in the NPPES registry as of the last update on 2026-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.