Llewelyn Williams, M.D.
NPI 1316922750 · Pain Medicine (Anesthesiology) Physician · Las Cruces, NM
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Llewelyn Williams, M.D. is a Pain Medicine (Anesthesiology) Physician provider in Las Cruces, NM (NPI 1316922750).
Provider details
- NPI number
- 1316922750
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD2010-0116 (NM)
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
20 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
2,468 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 | 645 | $113 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 420 | $80 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 310 | $55 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 241 | $61 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 132 | $159 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/Ms |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tizanidine Hcl | 1,039 | 286 |
| Gabapentin | 729 | 184 |
| Alprazolam | 641 | 260 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 636 | 149 |
| Tramadol Hcl | 445 | 131 |
| Pregabalin | 430 | 103 |
| Meloxicam | 374 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,880 across 27 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
- 2005-12-08
- Last updated
- 2014-11-12
Frequently asked questions
- What is Llewelyn Williams's NPI number?
- Llewelyn Williams's National Provider Identifier (NPI) is 1316922750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Llewelyn Williams's specialty?
- Llewelyn Williams is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Llewelyn Williams located?
- Llewelyn Williams's practice location on file with NPPES is 2170 E Lohman Ave, Las Cruces, NM 88001-8411.
- What is Llewelyn Williams's phone number?
- The practice phone number listed in the NPPES registry for Llewelyn Williams is (575) 449-7002.
- Does Llewelyn Williams accept Medicare?
- Llewelyn Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Llewelyn Williams's NPI active?
- Yes — Llewelyn Williams's NPI (1316922750) is active in the NPPES registry as of the last update on 2014-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.