Mark Hamming
NPI 1861653453 · Orthopaedic Surgery Physician · Gurnee, IL
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hamming is a Orthopaedic Surgery Physician provider in Gurnee, IL (NPI 1861653453).
Provider details
- NPI number
- 1861653453
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036-136089 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,498 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 570 | $76 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 517 | $93 |
| X-Ray of Hip, 2-3 Views73502 | 230 | $47 |
| X-Ray of Knee, 4 Or More Views73564 | 206 | $60 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 154 | $115 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 142 | $39 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 99 | 71 |
| Amoxicillin | 41 | 24 |
| Oxycodone Hcl | 26 | 19 |
| Celecoxib | 21 | 16 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 15 | 12 |
| Tramadol Hcl | 12 | — |
| Cephalexin | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$132 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-17
- Last updated
- 2014-08-14
Frequently asked questions
- What is Mark Hamming's NPI number?
- Mark Hamming's National Provider Identifier (NPI) is 1861653453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hamming's specialty?
- Mark Hamming is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Hamming located?
- Mark Hamming's practice location on file with NPPES is 350 S Greenleaf St, Gurnee, IL 60031-5709.
- What is Mark Hamming's phone number?
- The practice phone number listed in the NPPES registry for Mark Hamming is (847) 336-3335.
- Does Mark Hamming accept Medicare?
- Mark Hamming is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hamming's NPI active?
- Yes — Mark Hamming's NPI (1861653453) is active in the NPPES registry as of the last update on 2014-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.