Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. CHRISTOPHER A WALSH MD, PHD
NPI 1821053133
Psychiatry & Neurology - Neurology in Boston, MA

Q: What is Christopher Walsh's NPI number?

The NPI number for Christopher Walsh is 1821053133. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Q: What is Christopher Walsh's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for Christopher Walsh was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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 April 19, 2006PECOS Enrolled

77 AVENUE LOUIS PASTEUR, BOSTON, MA 02115(617) 667-0813(617) 667-8022 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Christopher A Walsh Md, Phd NPPES

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

DR. CHRISTOPHER A WALSH MD, PHD (NPI 1821053133) is an individual neurology provider in Boston, Massachusetts, licensed in Massachusetts (58811) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821053133

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameDR. CHRISTOPHER A WALSHCredential: MD, PHD

Location Address77 AVENUE LOUIS PASTEURBoston, MA 02115-5727

Mailing Address11 Arlington RdChestnut Hill, MA 02467-2612 · (617) 232-6254

Phone(617) 667-0813

Fax(617) 667-8022

Sole ProprietorNo

Enumeration DateApril 19, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1821053133 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in MA · 58811

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

77 AVENUE LOUIS PASTEUR, Boston, MA 02115

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Christopher A Walsh 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.

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 11

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

DANIEL R BROWN M.D.

Pediatrics (Pediatric Rheumatology)

77 AVENUE LOUIS PASTEUR, NRB-837
BOSTON, MA 02115

Suffolk County (617) 432-6570

DR. DAVE STANLEY MILSTONE M.D.

Pathology (Anatomic Pathology)

77 AVENUE LOUIS PASTEUR, HNRB 730G
BOSTON, MA 02115

Suffolk County (617) 525-4308

DR. DENNIS J SELKOE MD

Psychiatry & Neurology (Neurology)

77 AVENUE LOUIS PASTEUR, HIM 730
BOSTON, MA 02115

Suffolk County (617) 525-5200

MONICA A GIOVANNI M.S.

Chronic Disease Hospital

77 AVENUE LOUIS PASTEUR, NRB 455
BOSTON, MA 02115

Suffolk County (617) 525-4546

DR. BENJAMIN GILBERT NEEL M.D., PH.D.

Internal Medicine

77 AVENUE LOUIS PASTEUR, NRB ROOM 1030
BOSTON, MA 02115

Suffolk County (617) 667-2823

DR. NATASHA YURI FRANK MD

Internal Medicine

77 AVENUE LOUIS PASTEUR, NRB 455
BOSTON, MA 02115

Suffolk County (617) 525-4746

RAJA-ELIE EDWARD ABDULNOUR MD

Internal Medicine (Pulmonary Disease)

77 AVENUE LOUIS PASTEUR, HIM 807
BOSTON, MA 02115

Suffolk County (617) 525-5404

P REED LARSEN MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

77 AVENUE LOUIS PASTEUR, HARVARD INSTITUTES OF MEDICINE
BOSTON, MA 02115

Suffolk County (617) 525-5150

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 Christopher Walsh's NPI number?

The NPI number for Christopher Walsh is 1821053133. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is Christopher Walsh located?

Christopher Walsh practices at 77 Avenue Louis Pasteur, Boston, MA 02115. The listed phone number is (617) 667-0813.

What is Christopher Walsh's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Christopher Walsh enrolled in Medicare?

Yes. Christopher Walsh is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Christopher Walsh was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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.