William Warrender, M.D.
NPI 1770902538 · Orthopaedic Surgery Physician · South Bend, IN
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Warrender, M.D. is a Orthopaedic Surgery Physician provider in South Bend, IN (NPI 1770902538).
Provider details
- NPI number
- 1770902538
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01082069A (IN)
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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
746 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 | 143 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 126 | $84 |
| X-Ray of Hand, Minimum of 3 Views73130 | 60 | $40 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 57 | $156 |
| X-Ray of Wrist, 2 Views73100 | 53 | $32 |
| Injection Into Tendon Or Ligament20550 | 48 | $51 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 58 | 52 |
| Meloxicam | 48 | 20 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 16 | 15 |
| Tramadol Hcl | 14 | 12 |
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$45 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
Additional practice locations (3)
- 303 S Nappanee St Ste FElkhart, IN 46514-2066Phone: (574) 247-9441
- 60160 Bodnar BlvdMishawaka, IN 46544-9338Phone: (574) 247-9441
- 2349 Lake Ave Ste 201Plymouth, IN 46563-7837Phone: (574) 247-9441
Registry dates
- Enumerated
- 2014-04-09
- Last updated
- 2026-01-07
- Certified
- 2026-01-07
Frequently asked questions
- What is William Warrender's NPI number?
- William Warrender's National Provider Identifier (NPI) is 1770902538, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Warrender's specialty?
- William Warrender is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Warrender located?
- William Warrender's practice location on file with NPPES is 53880 Carmichael Dr, South Bend, IN 46635-1567.
- What is William Warrender's phone number?
- The practice phone number listed in the NPPES registry for William Warrender is (574) 247-9441.
- Does William Warrender accept Medicare?
- William Warrender is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Warrender's NPI active?
- Yes — William Warrender's NPI (1770902538) is active in the NPPES registry as of the last update on 2026-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.