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DR. KERSTIN ZANGER MD PHD
NPI 1700867991
Pediatrics in Boston, MA

Active since November 07, 2005PECOS Enrolled
55 FRUIT STREET FND 442, MASSACHUSETTS GENERAL HOSPITAL NEW BORN SERVICE, BOSTON, MA 02114(617) 724-9040(617) 724-9346 Get Directions Write a Review

NPPES record last updated: November 19, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Kerstin Zanger Md Phd NPPES

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

DR. KERSTIN ZANGER MD PHD (NPI 1700867991) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (217600) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700867991
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. KERSTIN ZANGERCredential: MD PHD
Location Address55 FRUIT STREET FND 442, MASSACHUSETTS GENERAL HOSPITAL NEW BORN SERVICEBoston, MA 02114-2696
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Phone(617) 724-9040
Fax(617) 724-9346
Sole ProprietorNo
Enumeration DateNovember 7, 2005
Last NPPES UpdateNovember 19, 2014
✔ NPI 1700867991 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MA · 217600
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.
55 FRUIT STREET FND 442, Boston, MA 02114
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Other Identifiers 5

OtherJ26340MA · Bcbs Ma
Medicare ID-Type UnspecifiedA35614MA
Medicaid2012472MA
Other217600MA · Tufts Health Plan
Medicare UPINH88291

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)

Dr. Kerstin Zanger Md Phd 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 Kerstin Zanger reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc
Same address
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
The General Hospital Corporation
Same address
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

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 02114 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 2

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

PRISCILLA A FRAPPIER NP
Nurse Practitioner
55 FRUIT STREET FND 442, PEDIATRIC NEONATOLOGY
BOSTON, MA 02114
Suffolk County (617) 724-2165
DR. JESSE DAVID ROBERTS JR. MD
Pediatrics
55 FRUIT STREET FND 442, MASSACHUSETTS GENERAL HOSPITAL NEW BORN SERVICE
BOSTON, MA 02114
Suffolk County (617) 726-9040

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 Kerstin Zanger's NPI number?

The NPI number for Kerstin Zanger is 1700867991. It was assigned to this individual provider in the NPPES registry on November 7, 2005.

Where is Kerstin Zanger located?

Kerstin Zanger practices at 55 Fruit Street Fnd 442 Massachusetts General Hospital New Born Service, Boston, MA 02114. The listed phone number is (617) 724-9040.

What is Kerstin Zanger's specialty?

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

Is Kerstin Zanger enrolled in Medicare?

Yes. Kerstin Zanger is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kerstin Zanger's services?

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

What insurance does Kerstin Zanger accept?

Health plans from Taro Health list Kerstin Zanger 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 Kerstin Zanger was last updated on November 19, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.