Sean Horrigan, D.O.
NPI 1821140351 · Internal Medicine Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Horrigan, D.O. is a Internal Medicine Physician provider in Worcester, MA (NPI 1821140351).
Provider details
- NPI number
- 1821140351
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 225555 (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
19 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
1,833 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 | 475 | $130 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 387 | $182 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 329 | $98 |
| Measurement of Brain Wave Activity (eeg), Awake and Drowsy95816 | 125 | $56 |
| Nerve Conduction, 9-10 Studies95911 | 107 | $214 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Donepezil Hcl | 693 | 205 |
| Memantine Hcl | 365 | 116 |
| Trazodone Hcl | 347 | 120 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 251 | 71 |
| Quetiapine Fumarate | 127 | 36 |
| Memantine Hclbrand: Memantine Hcl Er | 121 | 41 |
| Escitalopram Oxalate | 114 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$340 across 11 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
- 2007-01-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sean Horrigan's NPI number?
- Sean Horrigan's National Provider Identifier (NPI) is 1821140351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Horrigan's specialty?
- Sean Horrigan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Horrigan located?
- Sean Horrigan's practice location on file with NPPES is 281 Lincoln St, Worcester, MA 01605-2138.
- What is Sean Horrigan's phone number?
- The practice phone number listed in the NPPES registry for Sean Horrigan is (508) 334-8015.
- Does Sean Horrigan accept Medicare?
- Sean Horrigan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Horrigan's NPI active?
- Yes — Sean Horrigan's NPI (1821140351) 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.