RIANNON CHRISTA ATWATER MD
NPI 1952043374
Hospitalist in Denver, CO

Q: What is Riannon Atwater's NPI number?

The NPI number for Riannon Atwater is 1952043374. It was assigned to this individual provider in the NPPES registry on April 7, 2022.

Q: What is Riannon Atwater's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Riannon Atwater was last updated on May 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 07, 2022PECOS Enrolled

777 BANNOCK ST, DENVER, CO 80204(303) 436-6000 Get Directions Write a Review

NPPES record last updated: May 27, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 27, 2026, Apr 7, 2022 (2 updates tracked since 2022).

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About Riannon Christa Atwater Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RIANNON CHRISTA ATWATER MD (NPI 1952043374) is an individual hospitalist provider in Denver, Colorado, licensed in Colorado (DR.0077832) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS and is a graduate of University Of Colorado School Of Medicine, Aurora (2022).

NPPES Registry Identity

NPI1952043374

Entity TypeIndividualFemale

Primary Taxonomy208M00000X

Provider Legal NameRIANNON CHRISTA ATWATERCredential: MD

Location Address777 BANNOCK STDenver, CO 80204-4597

Mailing Address601 S Broadway Fl 5Denver, CO 80209-4081 · (303) 602-7000

Phone(303) 436-6000

Sole ProprietorNo

Medical School CMSUniversity Of Colorado School Of Medicine, AuroraGraduated 2022

Enumeration DateApril 7, 2022

Last NPPES UpdateMay 27, 20262 updates tracked since enumeration

NPPES CertifiedMay 27, 2026

✔ NPI 1952043374 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in CO · DR.0077832

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

777 BANNOCK ST, Denver, CO 80204

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Riannon Christa Atwater Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9638554462

PECOS Enrollment IDI20260630001213

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80204 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$132.55 typical visit price

range $58.06 – $174.82

Typical copayment $33.13 (range $14.51 – $43.70)

Most-billed visit code 99204

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. KATHERINE JEANNE CARLEY RN, MSN, CS

Clinical Nurse Specialist (Psychiatric/Mental Health)