Simon Desjardins, M.D.
NPI 1821387580 · Psychiatry Physician · Belmont, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Simon Desjardins, M.D. is a Psychiatry Physician provider in Belmont, MA (NPI 1821387580).
Provider details
- NPI number
- 1821387580
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A143651 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (3)
- 211 Park StAttleboro, MA 02703-3143Phone: (508) 236-7032Fax: (508) 236-8903
- 131 Coolidge Ave Apt 521Watertown, MA 02472-2800Phone: (401) 400-0636
- 29 Elbow StProvidence, RI 02903-4620Phone: (401) 424-5200
Registry dates
- Enumerated
- 2011-04-04
- Last updated
- 2025-10-22
- Certified
- 2025-10-22
Frequently asked questions
- What is Simon Desjardins's NPI number?
- Simon Desjardins's National Provider Identifier (NPI) is 1821387580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simon Desjardins's specialty?
- Simon Desjardins is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Simon Desjardins located?
- Simon Desjardins's practice location on file with NPPES is 115 Mill St, Belmont, MA 02478-1064.
- What is Simon Desjardins's phone number?
- The practice phone number listed in the NPPES registry for Simon Desjardins is (617) 855-3141.
- Does Simon Desjardins accept Medicare?
- Simon Desjardins is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Simon Desjardins's NPI active?
- Yes — Simon Desjardins's NPI (1821387580) is active in the NPPES registry as of the last update on 2025-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.