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Dr. John H. Chi, MD

Neurosurgery (Neurological Surgery Physician)

  • Medicare participating

At a glance

Years since graduation
25
In the NPI registry since
2007
Medicare patients seen, 2024
493

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2001Medical school: Columbia University College of Physicians and Surgeons
  • 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Neurological Surgery Physician primary
    MA license 235576

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Neurosurgery per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
493
Services billed
1,587
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Fusion of additional segment of spine20675
New patient office or other outpatient visit, 30-44 minutes181181
Established patient office or other outpatient visit, 20-29 minutes136120
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment8939
Insertion of cage or mesh device to spine bone and disc space during spine fusion8353
Established patient office or other outpatient visit, 30-39 minutes8277
New patient office or other outpatient visit, 45-59 minutes6060
Fusion of spine in lower back5754
Computer-assisted spinal procedure5654
Placement of stabilizing device to back, 3-6 spine bone segments4645

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Methylprednisolone
Other prescribers in Boston, MA
58

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 5 companies reported 48 payments worth $52,353 in total to this clinician.

By company
Stryker Corporation$24,906
Vb Spine LLC$24,221
Orthofix Medical, Inc.$1,857
Icotec Medical Inc.$1,329
DePuy Synthes Sales Inc.$39.94
By type
Consulting Fee$45,960
Travel and Lodging$3,288
Food and Beverage$3,105

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Oct 10, 2025Vb Spine LLC
Oct 10, 2025
Consulting Fee
Everest Spinal System · Spine
$22,500
Mar 21, 2025Stryker Corporation
Mar 21, 2025
Consulting Fee
CASCADIA INTERBODY SYSTEM · SPINE
$19,125
Feb 7, 2025Stryker Corporation
Feb 7, 2025
Consulting Fee
SERRATO · THORACOLUMBAR
$1,875
May 21, 2025Orthofix Medical, Inc.
May 21, 2025
Consulting Fee
M6-C · Prosthesis, Intervertebral Disc
$1,710
Jan 23, 2025Stryker Corporation
Jan 23, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to ATLANTA, GA
$1,454
Jan 16, 2025Stryker Corporation
Jan 16, 2025
Consulting Fee
ES2 SPINAL SYSTEM · THORACOLUMBAR
$750
Mar 15, 2025Stryker Corporation
Mar 15, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to FORT LAUDERDALE, FL
$631
Sep 12, 2025Icotec Medical Inc.
Sep 12, 2025
Travel and Lodging
VADER PEDICLE SYSTEM 6.0, SCREW, Carbon/PEEK, POLYAX., FEN., O 5.5 X 45 MM; VADER PEDICLE SYSTEM, ROD, Carbon/PEEK, CURVED, 6.0 R450 X 200 MM; KONG-TL VBR E, EXPANDABLE BODY, L, 19 MM X 27 - 37 MM · SPINAL STABILIZATION · travel to BOSTON, MA · in-kind
$422
Mar 7, 2025Stryker Corporation
Mar 7, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to EVERETT, MA
$160
Mar 10, 2025Stryker Corporation
Mar 10, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to SECAUCUS, NJ
$158
All 14 payments other than meals, newest first
All payments other than meals
DateCompanyWhat it was forAmount
Oct 10, 2025Vb Spine LLC
Oct 10, 2025
Consulting Fee
Everest Spinal System · Spine
$22,500
Sep 18, 2025Vb Spine LLC
Sep 18, 2025
Travel and Lodging
Everest Spinal System · Spine · travel to Washington, DC · in-kind
$153
Sep 12, 2025Icotec Medical Inc.
Sep 12, 2025
Travel and Lodging
VADER PEDICLE SYSTEM 6.0, SCREW, Carbon/PEEK, POLYAX., FEN., O 5.5 X 45 MM; VADER PEDICLE SYSTEM, ROD, Carbon/PEEK, CURVED, 6.0 R450 X 200 MM; KONG-TL VBR E, EXPANDABLE BODY, L, 19 MM X 27 - 37 MM · SPINAL STABILIZATION · travel to BOSTON, MA · in-kind
$422
May 21, 2025Orthofix Medical, Inc.
May 21, 2025
Consulting Fee
M6-C · Prosthesis, Intervertebral Disc
$1,710
Mar 21, 2025Stryker Corporation
Mar 21, 2025
Consulting Fee
CASCADIA INTERBODY SYSTEM · SPINE
$19,125
Mar 15, 2025Stryker Corporation
Mar 15, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to FORT LAUDERDALE, FL
$631
Mar 11, 2025Stryker Corporation
Mar 11, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to LITTLE FALLS, NJ
$27.83
Mar 10, 2025Stryker Corporation
Mar 10, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to SECAUCUS, NJ
$158
Mar 10, 2025Stryker Corporation
Mar 10, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to SECAUCUS, NJ
$140
Mar 7, 2025Stryker Corporation
Mar 7, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to EVERETT, MA
$160
Mar 5, 2025Stryker Corporation
Mar 5, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to EVERETT, MA
$144
Feb 7, 2025Stryker Corporation
Feb 7, 2025
Consulting Fee
SERRATO · THORACOLUMBAR
$1,875
Jan 23, 2025Stryker Corporation
Jan 23, 2025
Travel and Lodging
CASCADIA INTERBODY SYSTEM · SPINE · travel to ATLANTA, GA
$1,454
Jan 16, 2025Stryker Corporation
Jan 16, 2025
Consulting Fee
ES2 SPINAL SYSTEM · THORACOLUMBAR
$750

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Massachusetts →

Industry-funded research

Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $58,881 in research payments for these studies, mostly to the institutions running them.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Neurosurgery clinicians in Boston

Sources

NPI registry (CMS NPPES, November 2026; record last updated November 26, 2008), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1649473000. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.