NPPES file of Aug 9, 2026

John J. Gashkoff, M.D.

Interventional Pain Medicine Physician · Naperville, IL

John J. Gashkoff, M.D. is an interventional pain medicine physician with a practice address in Naperville, Illinois, and NPI 1356309694, issued on May 3, 2006. Check the license (Illinois 036087991, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1356309694
Name
John J. Gashkoff
Credential
M.D.
Primary taxonomy
Interventional Pain Medicine Physician 208VP0014X
License number
036087991 IL
Self-reported in NPPES; status is on the state search
Practice location
120 Spalding Dr, Naperville, IL 60540
Phone
(630) 967-6000
Enumerated
May 3, 2006
Record last updated
Aug 8, 2023
Medicare enrollment
Enrolled (PECOS I20040621001284); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 1990
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest interventional pain medicine physician records → All 121 in Illinois → Look up another NPI →

Also registered at 120 Spalding Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amy Batista, NPAdult Health Nurse Practitioner1770844060
  2. Rosemarie Batiste, APN-CNPNurse Practitioner1245434851
  3. Mansoina Baweja, MDHematology & Oncology Physician1629052089
  4. Michael Caron, MDNeurological Surgery Physician1275738023
  5. Cathleen Cregier, APNInternal Medicine Physician1245227271
  6. Neil Das Gupta, M.D.Radiation Oncology Physician1316974363

Verify John J. Gashkoff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036087991    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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62% fewer Medicare Part D claims than the average interventional pain medicine physician in 2024

884 Medicare Part D claims for 203 beneficiaries, against an average of 2,306 among the 2,100 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 545 claims were for opioids.

  1. John Gashkoff884
  2. Specialty average2,306

Most prescribed

  1. Hydrocodone-Acetaminophen210 claims
  2. Gabapentin114 claims
  3. Tramadol Hcl98 claims
  4. Oxycodone-Acetaminophen84 claims
  5. Pregabalin58 claims
  6. Morphine Sulfate Er51 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $1,489.04

35 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 1,966 providers of this specialty with any payment received $3,889.53 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Gashkoff$1,489.04
  2. Specialty average$3,889.53

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Dupage Medical Group LtdNaperville, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

John J. Gashkoff among 121 interventional pain medicine physician records in Illinois

John J. Gashkoff, M.D. is one of 121 interventional pain medicine physician records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 29% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated1990 · median 1992 among the 79 with a school on file
  • Record last updated2023 · 25% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208VP0014X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Interventional Pain Medicine Physician providers in Illinois

There are 121 interventional pain medicine physician records in Illinois.

All 121 in Illinois → Every provider in Naperville → Interventional Pain Medicine Physician nationwide →

The 8 interventional pain medicine physician records with the nearest ZIP codes

  1. Manraj DhesiNaperville, IL 605401629606686
  2. Paul Manganelli, M.D.Naperville, IL 605401841247236
  3. Hafez Sami, M.D.Naperville, IL 605401003863499
  4. Yuan Chen, M.D.North Aurora, IL 605421811900186
  5. Shivani Chadha, M.D.Willowbrook, IL 605271376710210
  6. Gary Koehn, MD, PHDLa Grange Highlands, IL 605251992758965
  7. Nicholas Kondelis, M.DOak Brook, IL 605231346282126
  8. Antoine Chami, M.D.Westmont, IL 605591699858175

Common questions

What is John J. Gashkoff, M.D.'s NPI number?

John J. Gashkoff, M.D.'s National Provider Identifier (NPI) is 1356309694, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John J. Gashkoff, M.D. located?

The NPPES record lists a practice address at 120 Spalding Dr, Naperville, IL, 60540. Phone: (630) 967-6000. Providers update this record themselves, so call before visiting.

How can I verify John J. Gashkoff, M.D.'s license?

NPPES lists Illinois license number 036087991, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does John J. Gashkoff, M.D. prescribe under Medicare Part D?

In 2024, John J. Gashkoff, M.D. had 884 Medicare Part D claims for 203 beneficiaries; the average among interventional pain medicine physician prescribers was 2,306. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.