LILLIAN DEROSA PMHNP-BC, BSN, RN
NPI 1609384221
Nurse Practitioner - Psychiatric/Mental Health in Canton, MA
About Lillian Derosa Pmhnp-bc, Bsn, Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LILLIAN DEROSA PMHNP-BC, BSN, RN (NPI 1609384221) is an individual psychiatric/mental health provider in Canton, Massachusetts, licensed in Massachusetts (RN2302862) and active in the NPI registry since January 2018. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lillian Derosa Pmhnp-bc, Bsn, Rn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Lillian Derosa reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Braintree, MA 02184
- Reassigned Medicare billing, Massachusetts enrollment
Boston, MA 02118
- Reassigned Medicare billing, Massachusetts enrollment
- 716 clinicians in this Medicare group
Watertown, MA 02472
- Reassigned Medicare billing, Massachusetts enrollment
- 1,103 clinicians in this Medicare group
Middletown, CT 06457
- Reassigned Medicare billing, Massachusetts enrollment
- 108 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02021 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lillian Derosa's NPI number?
The NPI number for Lillian Derosa is 1609384221. It was assigned to this individual provider in the NPPES registry on January 17, 2018.
Where is Lillian Derosa located?
Lillian Derosa practices at 238 High St, Canton, MA 02021. The listed phone number is (617) 755-6020.
What is Lillian Derosa's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Lillian Derosa enrolled in Medicare?
Yes. Lillian Derosa is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Lillian Derosa's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lillian Derosa reassigns Medicare benefits to 4 organizations: Pinnacle Psychiatric Care LLC (Braintree, MA), Bmc Affiliated Physicians, Inc. (Boston, MA), Steward Medical Group, Inc (Watertown, MA) and Healthdrive Behavioral Health Services, PLLC (Middletown, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lillian Derosa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lillian Derosa accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and WellSense Health Plan list Lillian Derosa as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Lillian Derosa was last updated on March 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Lillian Derosa, PMHNP-BC, BSN, RN · NPI 1609384221
Psychiatric/Mental Health physician in Canton, Massachusetts. Individual provider, active in the CMS NPPES registry since January 17, 2018.
## Identity
- **NPI:** 1609384221 (Entity type: Individual)
- **Enumerated:** January 17, 2018
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** RN2302862 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 238 HIGH ST, Canton, MA 02021-3654
- **Phone:** (617) 755-6020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Pinnacle Psychiatric Care LLC (NPI 1013716273, Braintree, MA); Bmc Affiliated Physicians, Inc. (NPI 1245320910, Boston, MA); Steward Medical Group, Inc (NPI 1629398219, Watertown, MA); Healthdrive Behavioral Health Services, PLLC (NPI 1760909279, Middletown, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** March 5, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1609384221) · Data from the CMS NPPES public registry.