Dan O'Brien, D.O.
NPI 1427036474 · Family Medicine Physician · Orleans, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dan O'Brien, D.O. is a Family Medicine Physician provider in Orleans, IN (NPI 1427036474).
Provider details
- NPI number
- 1427036474
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 02002666A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,080 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 378 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 290 | $119 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 215 | $9 |
| Blood Test, Clotting Time85610 | 70 | $4 |
| Urinalysis, Manual Test81002 | 52 | $3 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 44 | $114 |
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 |
|---|---|---|
| Atorvastatin Calcium | 642 | 152 |
| Amlodipine Besylate | 555 | 139 |
| Levothyroxine Sodium | 491 | 114 |
| Omeprazole | 407 | 104 |
| Hydrochlorothiazide | 401 | 102 |
| Losartan Potassium | 347 | 87 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-09
- Last updated
- 2024-02-21
- Certified
- 2024-02-21
Frequently asked questions
- What is Dan O'Brien's NPI number?
- Dan O'Brien's National Provider Identifier (NPI) is 1427036474, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dan O'Brien's specialty?
- Dan O'Brien is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dan O'Brien located?
- Dan O'Brien's practice location on file with NPPES is 260 S Maple St, Orleans, IN 47452-1724.
- What is Dan O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Dan O'Brien is (812) 865-3350.
- Does Dan O'Brien accept Medicare?
- Dan 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 Dan O'Brien's NPI active?
- Yes — Dan O'Brien's NPI (1427036474) is active in the NPPES registry as of the last update on 2024-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.