Daniel O'Neill, M.D.
NPI 1972578508 · Internal Medicine Physician · Putnam, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel O'Neill, M.D. is a Internal Medicine Physician provider in Putnam, CT (NPI 1972578508).
Provider details
- NPI number
- 1972578508
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036878 (CT)
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 tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
826 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 434 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 104 | $95 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 63 | $183 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 56 | $135 |
| Transitional Care Management Services for Problem of High Complexity99496 | 36 | $292 |
| Administration of Pneumococcal VaccineG0009 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 166 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 588 | 159 |
| Atorvastatin Calcium | 486 | 135 |
| Metoprolol Succinate | 463 | 125 |
| Levothyroxine Sodium | 339 | 72 |
| Lisinopril | 325 | 93 |
| Amlodipine Besylate | 321 | 94 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,002 across 50 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
Additional practice locations (1)
- 330 Pomfret StPutnam, CT 06260-3803Phone: (860) 928-7704Fax: (860) 928-4092
Registry dates
- Enumerated
- 2006-02-17
- Last updated
- 2026-04-08
- Certified
- 2026-04-08
Frequently asked questions
- What is Daniel O'Neill's NPI number?
- Daniel O'Neill's National Provider Identifier (NPI) is 1972578508, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel O'Neill's specialty?
- Daniel O'Neill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel O'Neill located?
- Daniel O'Neill's practice location on file with NPPES is 7 Kennedy Dr, Putnam, CT 06260-1939.
- What is Daniel O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Daniel O'Neill is (860) 928-7704.
- Does Daniel O'Neill accept Medicare?
- Daniel O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel O'Neill's NPI active?
- Yes — Daniel O'Neill's NPI (1972578508) is active in the NPPES registry as of the last update on 2026-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.