John Grimaldi, M.D.
NPI 1720027832 · Psychiatry Physician · Boston, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Grimaldi, M.D. is a Psychiatry Physician provider in Boston, MA (NPI 1720027832).
Provider details
- NPI number
- 1720027832
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 242094 (MA)
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
362 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 | 203 | $87 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 82 | $128 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 53 | $124 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 24 | $102 |
Typical Medicare-allowed amounts for these services range $87–$128 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 275 | 32 |
| Sertraline Hcl | 161 | 32 |
| Quetiapine Fumarate | 146 | 16 |
| Bupropion Hclbrand: Bupropion Xl | 133 | 21 |
| Lamotrigine | 117 | 17 |
| Mirtazapine | 112 | 20 |
| Bupropion Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-05
- Last updated
- 2012-06-24
Frequently asked questions
- What is John Grimaldi's NPI number?
- John Grimaldi's National Provider Identifier (NPI) is 1720027832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grimaldi's specialty?
- John Grimaldi is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is John Grimaldi located?
- John Grimaldi's practice location on file with NPPES is 221 Longwood Ave, Boston, MA 02115-5804.
- What is John Grimaldi's phone number?
- The practice phone number listed in the NPPES registry for John Grimaldi is (617) 732-6753.
- Does John Grimaldi accept Medicare?
- John Grimaldi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Grimaldi's NPI active?
- Yes — John Grimaldi's NPI (1720027832) is active in the NPPES registry as of the last update on 2012-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.