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TRISTAN ISACKSEN NP
NPI 1376419283
Nurse Practitioner - Psychiatric/Mental Health in Boston, MA

Active since October 16, 2025PECOS Enrolled
186 LINCOLN ST STE 214, BOSTON, MA 02111(212) 203-1773(646) 665-4427 Get Directions Write a Review

NPPES record last updated: December 8, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Tristan Isacksen Np NPPES

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

TRISTAN ISACKSEN NP (NPI 1376419283) is an individual psychiatric/mental health provider in Boston, Massachusetts, licensed in Massachusetts (APRN10005192) and active in the NPI registry since October 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1376419283
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameTRISTAN ISACKSENCredential: NP
Location Address186 LINCOLN ST STE 214Boston, MA 02111-2403
Mailing Address274 Madison Ave Rm 1501New York, NY 10016-0701 · (212) 203-1773 · Fax (646) 665-4427
Phone(212) 203-1773
Fax(646) 665-4427
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateOctober 16, 2025
Last NPPES UpdateDecember 8, 2025
NPPES CertifiedDecember 8, 2025
✔ NPI 1376419283 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
License✔ Licensed in MA · APRN10005192
186 LINCOLN ST STE 214, Boston, MA 02111
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Cigna HealthCare of Florida, Inc., Harvard Pilgrim Health Care 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 (PECOS)

Tristan Isacksen Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6507350691
PECOS Enrollment IDI20251216002559
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 Tristan Isacksen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Rivia Medical PLLC
187 mi
Psychiatric/Mental Health
274 MADISON AVE RM 1501
New York, NY 10016
  • Reassigned Medicare billing, Massachusetts enrollment
  • 15 clinicians in this Medicare group
NPI 1134644032 (212) 203-1773

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 02111 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

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

ANNA FINK
Social Worker
186 LINCOLN ST STE 214
BOSTON, MA 02111
Suffolk County (212) 203-1773

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 Tristan Isacksen's NPI number?

The NPI number for Tristan Isacksen is 1376419283. It was assigned to this individual provider in the NPPES registry on October 16, 2025.

Where is Tristan Isacksen located?

Tristan Isacksen practices at 186 Lincoln St Ste 214, Boston, MA 02111. The listed phone number is (212) 203-1773.

What is Tristan Isacksen's specialty?

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

Is Tristan Isacksen enrolled in Medicare?

Yes. Tristan Isacksen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tristan Isacksen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tristan Isacksen reassigns Medicare benefits to Rivia Medical PLLC (New York, NY). 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 Tristan Isacksen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tristan Isacksen accept?

Health plans from Cigna HealthCare of Florida, Inc., Cigna Healthcare, Harvard Pilgrim Health Care and UnitedHealthcare list Tristan Isacksen 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 Tristan Isacksen was last updated on December 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.