Christopher Chambers, MD, PHD
NPI 1184831869 · Vascular Surgery Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Chambers, MD, PHD is a Vascular Surgery Physician provider in Grand Rapids, MI (NPI 1184831869).
Provider details
- NPI number
- 1184831869
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301091284 (MI)
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 tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
516 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) |
|---|---|---|
| Ultrasound Study of Arm and Leg Arteries93922 | 124 | $72 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 73 | $176 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $90 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $127 |
| Complete Ultrasound of Aorta, Vena Cava, Groin Vessels Or Bypass Grafts93978 | 38 | $163 |
| Complete Ultrasound Study of Arm and Leg Arteries93923 | 36 | $121 |
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 |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 78 | 31 |
| Apixabanbrand: Eliquis | 40 | — |
| Rivaroxabanbrand: Xarelto | 21 | — |
| Cilostazol | 14 | — |
| Atorvastatin Calcium | 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 , 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$328 across 9 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
Additional practice locations (1)
- 4600 Memorial Dr Ste 120Belleville, IL 62226-5359Phone: (618) 222-1020
Registry dates
- Enumerated
- 2007-05-16
- Last updated
- 2025-09-22
- Certified
- 2025-09-22
Frequently asked questions
- What is Christopher Chambers's NPI number?
- Christopher Chambers's National Provider Identifier (NPI) is 1184831869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Chambers's specialty?
- Christopher Chambers is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Chambers located?
- Christopher Chambers's practice location on file with NPPES is 275 Michigan St Ne, Grand Rapids, MI 49503-2531.
- What is Christopher Chambers's phone number?
- The practice phone number listed in the NPPES registry for Christopher Chambers is (616) 267-8700.
- Does Christopher Chambers accept Medicare?
- Christopher Chambers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Chambers's NPI active?
- Yes — Christopher Chambers's NPI (1184831869) is active in the NPPES registry as of the last update on 2025-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.