Patricia Gillan, N.P, M.S., C.S.
NPI 1457428161 · Adult Psychiatric/Mental Health Clinical Nurse Specialist · Mattapan, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patricia Gillan, N.P, M.S., C.S. is a Adult Psychiatric/Mental Health Clinical Nurse Specialist provider in Mattapan, MA (NPI 1457428161).
Provider details
- NPI number
- 1457428161
- Entity type
- Individual
- Primary specialty
- Adult Psychiatric/Mental Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P, M.S., C.S.
- Sex
- Female
- Sole proprietor
- No
- License
- 166491 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 121 | 20 |
| Trazodone Hcl | 107 | 20 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 56 | — |
| Olanzapine | 39 | — |
| Clonazepam | 35 | — |
| Sertraline Hcl | 35 | 11 |
| Risperidone | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2021-09-03
- Certified
- 2021-09-03
Frequently asked questions
- What is Patricia Gillan's NPI number?
- Patricia Gillan's National Provider Identifier (NPI) is 1457428161, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patricia Gillan's specialty?
- Patricia Gillan is listed in the NPPES registry with a primary specialty of Adult Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Patricia Gillan located?
- Patricia Gillan's practice location on file with NPPES is 1135 Morton St, Mattapan, MA 02126-2834.
- What is Patricia Gillan's phone number?
- The practice phone number listed in the NPPES registry for Patricia Gillan is (617) 533-2400.
- Does Patricia Gillan accept Medicare?
- Patricia Gillan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patricia Gillan's NPI active?
- Yes — Patricia Gillan's NPI (1457428161) is active in the NPPES registry as of the last update on 2021-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.