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MRS. RYAN SULLIVAN TAMARGO NP
NPI 1619425055
Nurse Practitioner - Gerontology in Boston, MA

Active since September 14, 2016PECOS Enrolled
450 BROOKLINE AVE, BOSTON, MA 02215(617) 632-3800(617) 632-1930 Get Directions Write a Review

NPPES record last updated: October 26, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 26, 2018, Mar 13, 2017, Sep 14, 2016 (3 updates tracked since 2016).

About Mrs. Ryan Sullivan Tamargo Np NPPES

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

MRS. RYAN SULLIVAN TAMARGO NP (NPI 1619425055) is an individual gerontology provider in Boston, Massachusetts, licensed in Massachusetts (RN2283429) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1619425055
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameMRS. RYAN SULLIVAN TAMARGOCredential: NP
Location Address450 BROOKLINE AVEBoston, MA 02215
Mailing Address450 Brookline AveBoston, MA 02215-5418 · (617) 632-3800 · Fax (617) 632-1930
Phone(617) 632-3800
Fax(617) 632-1930
Sole ProprietorYes
Enumeration DateSeptember 14, 2016
Last NPPES UpdateOctober 26, 20183 updates tracked since enumeration
✔ NPI 1619425055 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in MA · RN2283429
Also ListedNurse Practitioner · Primary CareTaxonomy 363LP2300X · License RN2283429 (MA)
450 BROOKLINE AVE, Boston, MA 02215
Open in Google Maps ↗

Secondary Practice Location 1

Location 1330 Brookline Ave, SHAPIRO 941Boston, MA 02215-5400 · Phone (617) 667-1925 · Fax (617) 667-1020

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Ryan Sullivan Tamargo Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Ryan Tamargo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Dana-Farber Cancer Institute, Inc.
Same address
General Acute Care Hospital
450 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,026 clinicians in this Medicare group
NPI 1851333686 (617) 632-3000

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 02215 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 20

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

PRABHSIMRANJOT SINGH MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-7956
SHAWN MAGUIRE PA-C
Physician Assistant
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-8487
KARINA FRANCA
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-2285
DR. SUZANNE JAQUETH FORREST M.D.
Pediatrics (Pediatric Hematology-Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3270
LAUREN KIRITSY MSW, LCSW
Counselor (Mental Health)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-3448
OFIR WOLAJ MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE, DANA 2058
BOSTON, MA 02215
Suffolk County (617) 632-6139
JASON BATALHA AGPCNP-BC
Nurse Practitioner
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-6140
FATIMA EMRAN AMIR MS, LGC
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3729

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 Ryan Tamargo's NPI number?

The NPI number for Ryan Tamargo is 1619425055. It was assigned to this individual provider in the NPPES registry on September 14, 2016.

Where is Ryan Tamargo located?

Ryan Tamargo practices at 450 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 632-3800.

What is Ryan Tamargo's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Ryan Tamargo enrolled in Medicare?

Yes. Ryan Tamargo is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Ryan Tamargo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Tamargo reassigns Medicare benefits to Dana-Farber Cancer Institute, Inc. (Boston, 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 Ryan Tamargo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ryan Tamargo was last updated on October 26, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.