Diane Hillard-Sembell, M.D.
NPI 1972600294 · Orthopaedic Surgery Physician · Springfield, IL
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Hillard-Sembell, M.D. is a Orthopaedic Surgery Physician provider in Springfield, IL (NPI 1972600294).
Provider details
- NPI number
- 1972600294
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036076412 (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
19 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
179 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 51 | $87 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 31 | $104 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 29 | $73 |
| X-Ray of Knee, 1-2 Views73560 | 21 | $32 |
| X-Ray of Knee, 3 Views73562 | 21 | $38 |
| X-Ray for Bone Length Assessment77073 | 14 | $43 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 75 | 40 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 38 | 33 |
| Tramadol Hcl | 31 | 26 |
| Clindamycin Hcl | 27 | 19 |
| Cephalexin | 20 | 17 |
| Nabumetone | 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 , 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
- 2006-09-20
- Last updated
- 2020-05-22
- Certified
- 2020-05-22
Frequently asked questions
- What is Diane Hillard-Sembell's NPI number?
- Diane Hillard-Sembell's National Provider Identifier (NPI) is 1972600294, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Hillard-Sembell's specialty?
- Diane Hillard-Sembell is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Hillard-Sembell located?
- Diane Hillard-Sembell's practice location on file with NPPES is 800 N. 1st Street, Springfield, IL 62702.
- What is Diane Hillard-Sembell's phone number?
- The practice phone number listed in the NPPES registry for Diane Hillard-Sembell is (217) 528-7541.
- Does Diane Hillard-Sembell accept Medicare?
- Diane Hillard-Sembell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Hillard-Sembell's NPI active?
- Yes — Diane Hillard-Sembell's NPI (1972600294) is active in the NPPES registry as of the last update on 2020-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.