Sean Calnan, PA-C
NPI 1831594134 · Physician Assistant · Watertown, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Calnan, PA-C is a Physician Assistant provider in Watertown, MA (NPI 1831594134).
Provider details
- NPI number
- 1831594134
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- PA5181 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 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
282 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 98 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 68 | $84 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 67 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 25 | $120 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 12 | $18 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 12 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 93 | 45 |
| Levothyroxine Sodium | 62 | 26 |
| Amlodipine Besylate | 58 | 28 |
| Omeprazole | 41 | 19 |
| Losartan Potassium | 34 | 15 |
| Lisinopril | 31 | 14 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-10-29
- Last updated
- 2021-10-15
- Certified
- 2021-09-30
Frequently asked questions
- What is Sean Calnan's NPI number?
- Sean Calnan's National Provider Identifier (NPI) is 1831594134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Calnan's specialty?
- Sean Calnan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sean Calnan located?
- Sean Calnan's practice location on file with NPPES is 11 Mount Auburn Street, Watertown, MA 02472.
- What is Sean Calnan's phone number?
- The practice phone number listed in the NPPES registry for Sean Calnan is (781) 653-0100.
- Does Sean Calnan accept Medicare?
- Sean Calnan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Calnan's NPI active?
- Yes — Sean Calnan's NPI (1831594134) is active in the NPPES registry as of the last update on 2021-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.