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MALLORY MANDEL
NPI 1851851281
Pediatrics in Boston, MA

Active since March 21, 2019PECOS Enrolled
300 LONGWOOD AVE BLDG 5TH, BOSTON, MA 02115(617) 355-6129 Get Directions Write a Review

NPPES record last updated: April 30, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 30, 2026, Oct 22, 2023, Jul 5, 2022 and 1 more (4 updates tracked since 2019).

About Mallory Mandel NPPES

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

MALLORY MANDEL (NPI 1851851281) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (291542) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1851851281
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameMALLORY MANDEL
Location Address300 LONGWOOD AVE BLDG 5THBoston, MA 02115-5724
Mailing Address300 Longwood Ave Bldg 5thBoston, MA 02115-5724 · (617) 355-6129
Phone(617) 355-6129
Sole ProprietorNo
Enumeration DateMarch 21, 2019
Last NPPES UpdateApril 30, 20264 updates tracked since enumeration
NPPES CertifiedApril 30, 2026
✔ NPI 1851851281 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MA · 291542
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 LONGWOOD AVE BLDG 5TH, Boston, MA 02115
Open in Google Maps ↗

Secondary Practice Location 1

Location 155 Fruit StBoston, MA 02114-2696 · Phone (617) 726-3030

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mallory Mandel 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 Reassignments

2

Medicare enrollment records show Mallory Mandel reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The General Hospital Corporation
2.6 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Massachusetts General Physicians Organization Inc
2.6 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287

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
$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.

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 Mallory Mandel's NPI number?

The NPI number for Mallory Mandel is 1851851281. It was assigned to this individual provider in the NPPES registry on March 21, 2019.

Where is Mallory Mandel located?

Mallory Mandel practices at 300 Longwood Ave Bldg 5th, Boston, MA 02115. The listed phone number is (617) 355-6129.

What is Mallory Mandel's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mallory Mandel enrolled in Medicare?

Yes. Mallory Mandel is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mallory Mandel's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mallory Mandel reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). 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 Mallory Mandel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mallory Mandel accept?

Health plans from Taro Health list Mallory Mandel 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 Mallory Mandel was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.