Killian O'Connell, M.D.
NPI 1265402515 · Psychiatry Physician · Amherst, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Killian O'Connell, M.D. is a Psychiatry Physician provider in Amherst, MA (NPI 1265402515).
Provider details
- NPI number
- 1265402515
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 150074 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
693 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 244 | $69 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 189 | $66 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 144 | $91 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 90 | $130 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 26 | $98 |
Typical Medicare-allowed amounts for these services range $66–$130 (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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 281 | 54 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 221 | 47 |
| Bupropion Hclbrand: Bupropion Xl | 198 | 57 |
| Clonazepam | 135 | 30 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 112 | 25 |
| Nortriptyline Hcl | 85 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$86 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is Killian O'Connell's NPI number?
- Killian O'Connell's National Provider Identifier (NPI) is 1265402515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Killian O'Connell's specialty?
- Killian O'Connell is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Killian O'Connell located?
- Killian O'Connell's practice location on file with NPPES is 6 University Dr, Amherst, MA 01002-2360.
- What is Killian O'Connell's phone number?
- The practice phone number listed in the NPPES registry for Killian O'Connell is (413) 549-9232.
- Does Killian O'Connell accept Medicare?
- Killian O'Connell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Killian O'Connell's NPI active?
- Yes — Killian O'Connell's NPI (1265402515) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.