John Marshall, MD
NPI 1144219171 · Anesthesiology Physician · Peoria, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Marshall, MD is a Anesthesiology Physician provider in Peoria, IL (NPI 1144219171).
Provider details
- NPI number
- 1144219171
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036090099 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,043 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 375 | $138 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Each Additional Level64484 | 153 | $50 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 151 | $94 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 75 | $80 |
| Injection of Substance Into Middle Or Upper Spine Canal Using Imaging Guidance62321 | 69 | $103 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 146 | 52 |
| Duloxetine Hcl | 50 | 19 |
| Trazodone Hcl | 24 | — |
| Baclofen | 22 | 15 |
| Meloxicam | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-21
- Last updated
- 2019-03-07
Frequently asked questions
- What is John Marshall's NPI number?
- John Marshall's National Provider Identifier (NPI) is 1144219171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Marshall's specialty?
- John Marshall is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Marshall located?
- John Marshall's practice location on file with NPPES is 8600 N State Route 91, Peoria, IL 61615-9541.
- What is John Marshall's phone number?
- The practice phone number listed in the NPPES registry for John Marshall is (309) 692-5393.
- Does John Marshall accept Medicare?
- John Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Marshall's NPI active?
- Yes — John Marshall's NPI (1144219171) is active in the NPPES registry as of the last update on 2019-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.