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SIVARIN NELSON
NPI 1083220347
Counselor - Mental Health in Wakefield, MA

Active since September 21, 2020PECOS EnrolledAccepts Medicare Assignment
37 WATER ST STE 1, WAKEFIELD, MA 01880(617) 333-8775 Get Directions Write a Review

NPPES record last updated: February 4, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 4, 2021, Sep 21, 2020 (2 updates tracked since 2020).

About Sivarin Nelson NPPES

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

SIVARIN NELSON (NPI 1083220347) is an individual mental health provider in Wakefield, Massachusetts and active in the NPI registry since September 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Wakefield, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1083220347
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameSIVARIN NELSON
Location Address37 WATER ST STE 1Wakefield, MA 01880-3044
Mailing Address37 Water St Ste 1Wakefield, MA 01880-3044 · (617) 333-8775
Phone(617) 333-8775
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateSeptember 21, 2020
Last NPPES UpdateFebruary 4, 20212 updates tracked since enumeration
NPPES CertifiedNovember 11, 2020
✔ NPI 1083220347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
37 WATER ST STE 1, Wakefield, MA 01880
Open in Google Maps ↗

Secondary Practice Location 1

Location 198 Cedar St Apt 17Wakefield, MA 01880-2757 · Phone (781) 666-8773

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company 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

Sivarin Nelson 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 ID9931647732
PECOS Enrollment IDI20240812001920
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 Reassignments

4

Medicare enrollment records show Sivarin Nelson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sb Transitional Sub, LLC
31 mi
Mental Health (Including Community Mental Health Center)
1115 W CHESTNUT ST
Brockton, MA 02301
  • Reassigned Medicare billing, Massachusetts enrollment
  • 120 clinicians in this Medicare group
NPI 1962091173 (508) 521-2200
Grow Healthcare Group PA
1,264 mi
Mental Health
66 W FLAGLER ST STE 900
Miami, FL 33130
  • Reassigned Medicare billing, Massachusetts and Michigan enrollments
  • 522 clinicians in this Medicare group
NPI 1245845932 (786) 244-7711
Sondermind, P.A.
1,424 mi
Clinical
801 E DOUGLAS AVE FL 2
Wichita, KS 67202
  • Reassigned Medicare billing, Michigan enrollment
  • Medicare enrollment name: Sondermind PA
  • 56 clinicians in this Medicare group
NPI 1710647581 (844) 843-7279
Sondermind Provider Network LLC
1,769 mi
Clinical
1738 WYNKOOP ST STE 303
Denver, CO 80202
  • Reassigned Medicare billing, Massachusetts and Maine enrollments
  • 94 clinicians in this Medicare group
NPI 1760854442 (844) 843-7279

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

Other Providers at the Same Location NPPES 16

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

COLLEEN KENNEY
Community/Behavioral Health
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 851-2648
ALISON LAURA LEE
Counselor (Mental Health)
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 851-2648
ELIZABETH AUBE
Counselor
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 851-2648
ANDREW MELLO
Social Worker
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 851-2648
MRS. EDA KIL
Community/Behavioral Health
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 851-2648
TATYANA J VALME
Behavior Analyst
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (508) 521-2200
MISS SYDNEY FOGG
Counselor (Mental Health)
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 851-2648
MATTEO CHRISTIAN BUSER
Case Manager/Care Coordinator
37 WATER ST STE 1
WAKEFIELD, MA 01880
Middlesex County (781) 331-7866

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 Sivarin Nelson's NPI number?

The NPI number for Sivarin Nelson is 1083220347. It was assigned to this individual provider in the NPPES registry on September 21, 2020.

Where is Sivarin Nelson located?

Sivarin Nelson practices at 37 Water St Ste 1, Wakefield, MA 01880. The listed phone number is (617) 333-8775.

What is Sivarin Nelson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Sivarin Nelson enrolled in Medicare?

Yes. Sivarin Nelson 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 Sivarin Nelson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sivarin Nelson reassigns Medicare benefits to 4 organizations: Sb Transitional Sub, LLC (Brockton, MA), Grow Healthcare Group PA (Miami, FL), Sondermind, P.A. (Wichita, KS) and Sondermind Provider Network LLC (Denver, CO). 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 Sivarin Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sivarin Nelson accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Harvard Pilgrim Health Care and Priority Health list Sivarin Nelson 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 Sivarin Nelson was last updated on February 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.