NESSA TANTIVIT MD
NPI 1083241087
Pediatrics - Pediatric Endocrinology in Boston, MA

Q: What is Nessa Tantivit's NPI number?

The NPI number for Nessa Tantivit is 1083241087. It was assigned to this individual provider in the NPPES registry on March 27, 2020.

Q: What is Nessa Tantivit's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Endocrinology, with taxonomy code 2080P0205X.

Q: When was this NPI record last updated?

The NPPES record for Nessa Tantivit was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since March 27, 2020PECOS Enrolled

300 LONGWOOD AVE, BOSTON, MA 02115(617) 355-6000 Get Directions Write a Review

NPPES record last updated: July 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 15, 2026, Jul 6, 2023, Jun 20, 2023 and 1 more (4 updates tracked since 2020).

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About Nessa Tantivit Md NPPES

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

NESSA TANTIVIT MD (NPI 1083241087) is an individual pediatric endocrinology provider in Boston, Massachusetts, licensed in Massachusetts (1014026) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1083241087

Entity TypeIndividualFemale

Primary Taxonomy2080P0205X

Provider Legal NameNESSA TANTIVITCredential: MD

Location Address300 LONGWOOD AVEBoston, MA 02115-5724

Mailing Address300 Longwood AveBoston, MA 02115-5724 · (617) 355-6000

Phone(617) 355-6000

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateMarch 27, 2020

Last NPPES UpdateJuly 15, 20264 updates tracked since enumeration

NPPES CertifiedJuly 15, 2026

✔ NPI 1083241087 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric EndocrinologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0205X

License✔ Licensed in MA · 1014026

Definition

A pediatrician who provides expert care to infants, children and adolescents who have diseases that result from an abnormality in the endocrine glands (glands which secrete hormones). These diseases include diabetes mellitus, growth failure, unusual size for age, early or late pubertal development, birth defects, the genital region and disorders of the thyroid, the adrenal and pituitary glands.

Also ListedPediatricsTaxonomy 208000000X · License 1014026 (MA)

300 LONGWOOD AVE, Boston, MA 02115

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nessa Tantivit Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7416375043

PECOS Enrollment IDI20260716003966

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

Children's Hospital Pediatric Associates, Inc

Same address

Pediatrics

300 LONGWOOD AVE
Boston, MA 02115

Reassigned Medicare billing, Massachusetts enrollment
1,358 clinicians in this Medicare group

NPI 1457306664 (617) 355-6000

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 02115 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

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

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.

JULIE ANN HANSEN LCSW

Social Worker (Clinical)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (857) 218-4309

MS. ANNA ROGLIERI

Nurse Practitioner (Psychiatric/Mental Health)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

STEPHEN G. FLYNN M.D.

Anesthesiology (Pediatric Anesthesiology)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

MRS. LAUREN ASHLEY SHARIS P.T., D.P.T

Physical Therapist

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-7216

MS. SOYUN KWAN LICSW

Social Worker (Clinical)

300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115

Suffolk County (617) 355-0567

PUJA BANKA M.D.

Pediatrics

300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115

Suffolk County (617) 355-6363

MR. COURTNEY SULLIVAN FRATTO CPNP

Nurse Practitioner (Pediatrics)

300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115

Suffolk County (857) 218-4085

DR. ELIZABETH S TAGLAUER M.D., PH.D.

Pediatrics (Neonatal-Perinatal Medicine)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

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 Nessa Tantivit's NPI number?

The NPI number for Nessa Tantivit is 1083241087. It was assigned to this individual provider in the NPPES registry on March 27, 2020.

Where is Nessa Tantivit located?

Nessa Tantivit practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.

What is Nessa Tantivit's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Endocrinology, with taxonomy code 2080P0205X.

Is Nessa Tantivit enrolled in Medicare?

Yes. Nessa Tantivit is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nessa Tantivit's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nessa Tantivit reassigns Medicare benefits to Children's Hospital Pediatric Associates, 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 Nessa Tantivit'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 Nessa Tantivit was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.