MRS. MARISSA ROSS (PMHNP) – Psychiatric/Mental Health Nurse Practitioner, NPI 1255913109

MRS. MARISSA ROSS (PMHNP) is a healthcare provider. based in Watertown, Massachusetts. specializing in NURSE PRACTITIONER. They hold the professional credentials PMHNP. They hold a License No. 070155-23 (NH). The NPI Number for MRS. MARISSA ROSS (PMHNP) is 1255913109

Main info

Female
Sole Proprietor
5 Years Of Experience
Accepts Medicare Assignment
Name
MRS. MARISSA ROSS (PMHNP)
NPI
1255913109
Phone
(617) 916-5096
Address
124 Watertown St Ste 2D
Enumeration Date
21 April 2021
Last Update Date
26 February 2024

Doctor Profile

Medical School Name
OTHER
Secondary Phone
8552847483
Graduation Year
2021 (5 years ago)
PAC ID
4486025129
Group Practice PAC ID
0749458420
Professional Enrollment ID
I20240328003021
Address ID
NH031106930BE173XXRDXX402
Telehealth
Yes
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience43
Completeness75
Years active:5State licenses:2Digital endpointsOther names

8,971 NURSE PRACTITIONER in MA

Provider Addresses for MRS. MARISSA ROSS (PMHNP)

  • 124 Watertown St Ste 2D

    Watertown, MA 024722500

    Phone: (617) 916-5096

    Type: Location

  • 1 EMERSON PL STE 3H

    BOSTON, MA 021142252

    Phone: (617) 397-3951

    Type: Location

  • 8 FAIRVIEW CIR

    GROVELAND, MA 018341309

    Phone: (603) 860-6310

    Type: Mailing

  • 124 WATERTOWN ST STE 2D

    WATERTOWN, MA 024722500

    Phone: (617) 916-5096

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $48.

Total Amount is formed as General ($48) + Research ($0) + Ownership ($0) = $48.

Last reported payment date: 2023-05-31 • Largest payer in this snapshot: ABBVIE INC. ($48).

Total Amount

$48

General + Research + Ownership

Payments

2

Total payment records

General Amount

$48

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2023-05-31

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
ABBVIE INC.$48
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2024-03-28

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20230117002233INurse PractitionerMATBD
I20240328003021INurse PractitionerNHTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99349Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes4626$0
View full utilization report →

Insurance plans in this area (ZIP 02472)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 0749458420View full group profile
NameSpecialtyState
Mental Health CounselorTX
Clinical Social WorkerTX
Mental Health CounselorPA
Mental Health CounselorGA
Mental Health CounselorGA
Clinical Social WorkerMA
Mental Health CounselorTX
Mental Health CounselorPA
Clinical Social WorkerMI
Mental Health CounselorGA

Reviews

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Frequently asked questions

Can I use this page to confirm MRS. MARISSA ROSS (PMHNP)'s NPI?
Yes. MRS. MARISSA ROSS (PMHNP) is listed with NPI 1255913109 in the public NPI dataset.
Does CMS list MRS. MARISSA ROSS (PMHNP) as active?
Yes — MRS. MARISSA ROSS (PMHNP) is active in the NPI listing used on this page.
What is MRS. MARISSA ROSS (PMHNP) best known for clinically?
Directory data describes MRS. MARISSA ROSS (PMHNP) with Psychiatric/Mental Health Nurse Practitioner. Clinical services aligned with this taxonomy classification.
Where is MRS. MARISSA ROSS (PMHNP) based?
MRS. MARISSA ROSS (PMHNP) is tied to Watertown, Massachusetts in the data we show; additional addresses may exist on the full record.
Is the information about MRS. MARISSA ROSS (PMHNP) up to date?
Data updates when providers file changes in NPPES — treat critical facts as "verify if unsure."

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