DR. NICHOLAS ANTHONY BESLEY MD
NPI 1205507670
Neurological Surgery in Boston, MA

Active since September 24, 2021PECOS Enrolled
800 WASHINGTON ST, BOSTON, MA 02111(303) 818-9157(617) 636-7021 Get Directions Write a Review

NPPES record last updated: May 22, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 22, 2026, Sep 24, 2021 (2 updates tracked since 2021).

About Dr. Nicholas Anthony Besley Md NPPES

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

DR. NICHOLAS ANTHONY BESLEY MD (NPI 1205507670) is an individual neurological surgery provider in Boston, Massachusetts, licensed in Massachusetts (3020499) and active in the NPI registry since September 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1205507670
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameDR. NICHOLAS ANTHONY BESLEYCredential: MD
Location Address800 WASHINGTON STBoston, MA 02111-1552
Mailing Address800 Washington StBoston, MA 02111-1552 · (303) 818-9157 · Fax (617) 636-7021
Fax(617) 636-7021
Sole ProprietorNo
Enumeration DateSeptember 24, 2021
Last NPPES UpdateMay 22, 20262 updates tracked since enumeration
NPPES CertifiedMay 22, 2026
NPI 1205507670 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
License Licensed in MA · 3020499
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
800 WASHINGTON ST, Boston, MA 02111

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. Nicholas Anthony Besley 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02111 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
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
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.

Internal Medicine (Gastroenterology)
800 WASHINGTON ST, BOX 233
BOSTON, MA 02111
Technician/Technologist (Optician)
800 WASHINGTON ST, BOX 450
BOSTON, MA 02111
Plastic Surgery
800 WASHINGTON ST
BOSTON, MA 02111
Internal Medicine
800 WASHINGTON ST
BOSTON, MA 02111
Internal Medicine (Infectious Disease)
800 WASHINGTON ST
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Psychiatry & Neurology (Psychiatry)
800 WASHINGTON ST
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111

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 Nicholas Besley's NPI number?

The NPI number for Nicholas Besley is 1205507670. It was assigned to this individual provider in the NPPES registry on September 24, 2021.

Where is Nicholas Besley located?

Nicholas Besley practices at 800 Washington St, Boston, MA 02111. The listed phone number is (303) 818-9157.

What is Nicholas Besley's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Nicholas Besley enrolled in Medicare?

Yes. Nicholas Besley is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Nicholas Besley was last updated on May 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.