Chad Ronholm, M.D.
NPI 1306027909 · Rheumatology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chad Ronholm, M.D. is a Rheumatology Physician provider in Saint Louis, MO (NPI 1306027909).
Provider details
- NPI number
- 1306027909
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2010026420 (MO)
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
18 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
4,243 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,220 | $126 |
| Unclassified BiologicsJ3590 | 1,080 | $183 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 943 | $125 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 210 | $27 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 196 | $70 |
| Complete Ultrasound Scan of Joint76881 | 103 | $53 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 442 | 121 |
| Pregabalin | 277 | 52 |
| Tramadol Hcl | 275 | 60 |
| Hydroxychloroquine Sulfate | 257 | 83 |
| Prednisone | 230 | 90 |
| Leflunomide | 108 | 43 |
| Gabapentin | 77 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,063 across 212 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)
- 1 Jefferson Barracks DrSaint Louis, MO 63125-4181Phone: (314) 652-4100
Registry dates
- Enumerated
- 2007-11-25
- Last updated
- 2024-03-29
- Certified
- 2024-03-29
Frequently asked questions
- What is Chad Ronholm's NPI number?
- Chad Ronholm's National Provider Identifier (NPI) is 1306027909, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chad Ronholm's specialty?
- Chad Ronholm is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Chad Ronholm located?
- Chad Ronholm's practice location on file with NPPES is 520 S Elm Ave, Saint Louis, MO 63119-3845.
- What is Chad Ronholm's phone number?
- The practice phone number listed in the NPPES registry for Chad Ronholm is (314) 645-4434.
- Does Chad Ronholm accept Medicare?
- Chad Ronholm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chad Ronholm's NPI active?
- Yes — Chad Ronholm's NPI (1306027909) is active in the NPPES registry as of the last update on 2024-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.