SHANNON MARIE MAIN PMHNP, CNP
NPI 1538885686
Nurse Practitioner - Psychiatric/Mental Health in Haverhill, MA
About Shannon Marie Main Pmhnp, Cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHANNON MARIE MAIN PMHNP, CNP (NPI 1538885686) is an individual psychiatric/mental health provider in Haverhill, Massachusetts, licensed in Massachusetts (CNPNE10000313) and active in the NPI registry since October 2022. She is enrolled in Medicare PECOS, is affiliated with Emerson Hospital -, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 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
Shannon Marie Main Pmhnp, Cnp 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 Reassignment
Medicare enrollment records show Shannon Main reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lexington, MA 02421
- Reassigned Medicare billing, Massachusetts enrollment
- 167 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Emerson Hospital -
Acute Care Hospitals · W Concord, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01830 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Shannon Main's NPI number?
The NPI number for Shannon Main is 1538885686. It was assigned to this individual provider in the NPPES registry on October 19, 2022.
Where is Shannon Main located?
Shannon Main practices at 62 Brown St Ste 305, Haverhill, MA 01830. The listed phone number is (978) 369-1113.
What is Shannon Main's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Shannon Main enrolled in Medicare?
Yes. Shannon Main 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 organization bills Medicare for Shannon Main's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shannon Main reassigns Medicare benefits to Eliot Community Human Services (Lexington, MA). The 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 Shannon Main's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Shannon Main accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Shannon Main 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.
Is Shannon Main affiliated with any hospitals?
According to CMS data, Shannon Main is affiliated with Emerson Hospital -.
When was this NPI record last updated?
The NPPES record for Shannon Main was last updated on July 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Shannon Marie Main, PMHNP, CNP · NPI 1538885686
Psychiatric/Mental Health physician in Haverhill, Massachusetts. Individual provider, active in the CMS NPPES registry since October 19, 2022.
## Identity
- **NPI:** 1538885686 (Entity type: Individual)
- **Enumerated:** October 19, 2022
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** CNPNE10000313 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 62 BROWN ST STE 305, Haverhill, MA 01830-6790
- **Phone:** (978) 369-1113 · **Fax:** (978) 369-0908
## 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:** Eliot Community Human Services (NPI 1932271632, Lexington, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** July 25, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1538885686) · Data from the CMS NPPES public registry.