KELLY O'BRIEN MD
NPI 1841300407
Internal Medicine in Denver, CO

Q: What is Kelly O'brien's NPI number?

The NPI number for Kelly O'brien is 1841300407. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Kelly O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Kelly O'brien was last updated on September 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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 August 30, 2006PECOS Enrolled

777 BANNOCK ST, MC 7782, DENVER, CO 80204(303) 436-6000 Get Directions Write a Review

NPPES record last updated: September 7, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Kelly O'brien Md NPPES

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

KELLY O'BRIEN MD (NPI 1841300407) is an individual internal medicine provider in Denver, Colorado, licensed in Colorado (27608) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841300407

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameKELLY O'BRIENCredential: MD

Location Address777 BANNOCK ST, MC 7782Denver, CO 80204-4507

Mailing Address777 Bannock St, Mc 7782Denver, CO 80204-4507

Phone(303) 436-6000

Sole ProprietorNo

Enumeration DateAugust 30, 2006

Last NPPES UpdateSeptember 7, 2023

✔ NPI 1841300407 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CO · 27608

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

777 BANNOCK ST, Denver, CO 80204

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Other Identifiers 1

Medicaid01276088CO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kelly O'brien Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Kelly O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Denver Health And Hospital Authority

Same address

General Practice

777 BANNOCK ST
Denver, CO 80204

Reassigned Medicare billing, Colorado enrollment
2,259 clinicians in this Medicare group

NPI 1477569838 (303) 436-6000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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)