Sean Obrien, MD
NPI 1952368896 · Vascular Surgery Physician · Kalamazoo, MI
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Obrien, MD is a Vascular Surgery Physician provider in Kalamazoo, MI (NPI 1952368896).
Provider details
- NPI number
- 1952368896
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- SO059838 (MI)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,220 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 | 251 | $93 |
| Ultrasound Study of Arm and Leg Arteries93922 | 130 | $11 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 127 | $37 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 105 | $63 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 103 | $74 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 97 | 34 |
| Apixabanbrand: Eliquis | 87 | 22 |
| Levothyroxine Sodium | 65 | 15 |
| Rivaroxabanbrand: Xarelto | 32 | — |
| Warfarin Sodium | 27 | — |
| Atorvastatin Calcium | 26 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,267 across 6 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
- 2006-04-26
- Last updated
- 2010-08-13
Frequently asked questions
- What is Sean Obrien's NPI number?
- Sean Obrien's National Provider Identifier (NPI) is 1952368896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Obrien's specialty?
- Sean Obrien is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Obrien located?
- Sean Obrien's practice location on file with NPPES is 1535 Gull Rd, Kalamazoo, MI 49048-1650.
- What is Sean Obrien's phone number?
- The practice phone number listed in the NPPES registry for Sean Obrien is (269) 381-4577.
- Does Sean Obrien accept Medicare?
- Sean Obrien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Obrien's NPI active?
- Yes — Sean Obrien's NPI (1952368896) is active in the NPPES registry as of the last update on 2010-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.