Chantal O'Brien, MD
NPI 1124165402 · Pain Medicine (Psychiatry & Neurology) Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Pain Management · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chantal O'Brien, MD is a Pain Medicine (Psychiatry & Neurology) Physician provider in Aurora, CO (NPI 1124165402).
Provider details
- NPI number
- 1124165402
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Psychiatry & Neurology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 47116 (CO)
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
19 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
160 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 | 49 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 33 | $96 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $172 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $134 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $65 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rimegepant Sulfatebrand: Nurtec Odt | 187 | 34 |
| Galcanezumab-Gnlmbrand: Emgality Pen | 141 | 25 |
| Atogepantbrand: Qulipta | 134 | 30 |
| Ubrogepantbrand: Ubrelvy | 133 | 28 |
| Memantine Hcl | 99 | 32 |
| Levetiracetam | 78 | 14 |
| Pregabalin | 77 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2021-04-16
- Certified
- 2021-04-16
Frequently asked questions
- What is Chantal O'Brien's NPI number?
- Chantal O'Brien's National Provider Identifier (NPI) is 1124165402, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chantal O'Brien's specialty?
- Chantal O'Brien is listed in the NPPES registry with a primary specialty of Pain Medicine (Psychiatry & Neurology) Physician (Allopathic & Osteopathic Physicians).
- Where is Chantal O'Brien located?
- Chantal O'Brien's practice location on file with NPPES is 12605 E 16th Ave, Aurora, CO 80045-2545.
- What is Chantal O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Chantal O'Brien is (720) 848-0000.
- Does Chantal O'Brien accept Medicare?
- Chantal O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chantal O'Brien's NPI active?
- Yes — Chantal O'Brien's NPI (1124165402) is active in the NPPES registry as of the last update on 2021-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.