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ANNA M LARSON MD
NPI 1588078612
Pediatrics in Boston, MA

Active since June 17, 2014PECOS Enrolled
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST., BOSTON, MA 02114(617) 726-2687 Get Directions Write a Review

NPPES record last updated: July 24, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Anna M Larson Md NPPES

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

ANNA M LARSON MD (NPI 1588078612) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (L-259930) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1588078612
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameANNA M LARSONCredential: MD
Location AddressMASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST.Boston, MA 02114
Mailing AddressMassachusetts General Hospital, 55 Fruit St.Boston, MA 02114 · (617) 726-2687
Phone(617) 726-2687
Sole ProprietorNo
Enumeration DateJune 17, 2014
Last NPPES UpdateJuly 24, 2025
NPPES CertifiedJuly 24, 2025
✔ NPI 1588078612 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MA · L-259930
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.
MASSACHUSETTS GENERAL HOSPITAL, Boston, MA 02114
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, 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)

Anna M Larson Md 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

3

Medicare enrollment records show Anna Larson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

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
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 Shriners' Hospital For Children
0.1 mi
Pediatric Surgery
51 BLOSSOM ST
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 128 clinicians in this Medicare group
NPI 1366886525 (617) 371-2300

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 20

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

KAITLYN MY-TU LAM MBBS
Internal Medicine (Cardiovascular Disease)
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET
BOSTON, MA 02114
Suffolk County (617) 724-7738
ALAKA RAY M.D.
Internal Medicine
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET
BOSTON, MA 02114
Suffolk County (617) 726-2066
MEGHAN E SISE M.D.
Internal Medicine (Nephrology)
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET
BOSTON, MA 02114
Suffolk County (617) 726-2862
HUGH G AUCHINCLOSS M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET
BOSTON, MA 02114
Suffolk County (617) 726-2000
ANGELA M. JACQUES MD
Pediatrics
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST.
BOSTON, MA 02114
Suffolk County (617) 726-2066
NICOLE J LOOK-HONG MD, MSC
Surgery (Surgical Oncology)
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST.
BOSTON, MA 02114
Suffolk County (617) 724-3868
CORINNA M ELLIOTT MA
Student in an Organized Health Care Education/Training Program
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET
BOSTON, MA 02114
Suffolk County (617) 724-5600
KIRAN J AGARWAL-HARDING MD
Orthopaedic Surgery
MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST.
BOSTON, MA 02114
Suffolk County (617) 726-2942

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 Anna Larson's NPI number?

The NPI number for Anna Larson is 1588078612. It was assigned to this individual provider in the NPPES registry on June 17, 2014.

Where is Anna Larson located?

Anna Larson practices at Massachusetts General Hospital 55 Fruit St., Boston, MA 02114. The listed phone number is (617) 726-2687.

What is Anna Larson's specialty?

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

Is Anna Larson enrolled in Medicare?

Yes. Anna Larson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Anna Larson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Larson reassigns Medicare benefits to 3 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and The Shriners' Hospital For Children (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 Anna Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anna Larson accept?

Health plans from AmeriHealth Caritas Next and Taro Health list Anna Larson 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 Anna Larson was last updated on July 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.