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MRS. MARISSA ROSS PMHNP
NPI 1255913109
Nurse Practitioner - Psychiatric/Mental Health in Boston, MA

Active since April 21, 2021PECOS EnrolledAccepts Medicare Assignment
1 EMERSON PL STE 3H, BOSTON, MA 02114(617) 397-3951 Get Directions Write a Review

NPPES record last updated: February 26, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Marissa Ross Pmhnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. MARISSA ROSS PMHNP (NPI 1255913109) is an individual psychiatric/mental health provider in Boston, Massachusetts, licensed in Massachusetts (RN2293349) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Watertown, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1255913109
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMRS. MARISSA ROSSCredential: PMHNP
Location Address1 EMERSON PL STE 3HBoston, MA 02114-2252
Mailing Address8 Fairview CirGroveland, MA 01834-1309 · (603) 860-6310
Phone(617) 397-3951
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateApril 21, 2021
Last NPPES UpdateFebruary 26, 2024
NPPES CertifiedFebruary 26, 2024
✔ NPI 1255913109 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
Licenses✔ Licensed in MA · RN2293349✔ Licensed in NH · 070155-23
1 EMERSON PL STE 3H, Boston, MA 02114
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Other Names 1

Former Name (1)Marissa Hurley

Secondary Practice Location 1

Location 1124 Watertown St Ste 2DWatertown, MA 02472-2500 · Phone (617) 916-5096

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and more.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

Mrs. Marissa Ross Pmhnp 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.

PECOS PAC ID4486025129
PECOS Enrollment IDI20230117002233, I20240328003021
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Marissa Ross reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Thrive Counseling LLC
548 mi
Mental Health
1000 JEFFERSON ST STE 2C
Lynchburg, VA 24504
  • Reassigned Medicare billing, Massachusetts and New Hampshire enrollments
  • 250 clinicians in this Medicare group
NPI 1215181300 (855) 284-7483

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MADELINE LYDON
Counselor (Mental Health)
1 EMERSON PL STE 3H
BOSTON, MA 02114
Suffolk County (617) 397-3951
SARAH KALNY
Counselor (Mental Health)
1 EMERSON PL STE 3H
BOSTON, MA 02114
Suffolk County (617) 671-1264
TYLER MACKENZIE SCHLICHT MSW
Social Worker (Clinical)
1 EMERSON PL STE 3H
BOSTON, MA 02114
Suffolk County (617) 397-3951
FRANCES BRAUN
Psychologist (Clinical)
1 EMERSON PL STE 3H
BOSTON, MA 02114
Suffolk County (617) 671-1264
AMANDA LASKO GROSS KANTER MSW, LICSW
Social Worker (Clinical)
1 EMERSON PL STE 3H
BOSTON, MA 02114
Suffolk County (617) 379-0496
SARAH BLOMSTEDT
Social Worker (Clinical)
1 EMERSON PL STE 3H
BOSTON, MA 02114
Suffolk County (617) 395-5806

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 Marissa Ross's NPI number?

The NPI number for Marissa Ross is 1255913109. It was assigned to this individual provider in the NPPES registry on April 21, 2021. The provider is also known as Marissa Hurley.

Where is Marissa Ross located?

Marissa Ross practices at 1 Emerson Pl Ste 3H, Boston, MA 02114. The listed phone number is (617) 397-3951.

What is Marissa Ross's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Marissa Ross enrolled in Medicare?

Yes. Marissa Ross 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 Marissa Ross's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Ross reassigns Medicare benefits to Thrive Counseling LLC (Lynchburg, VA). 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 Marissa Ross's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marissa Ross accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Marissa Ross 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 Marissa Ross was last updated on February 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.