Lawrence Walker, MD
NPI 1083619910 · Orthopaedic Surgery Physician · Lake Arrowhead, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lawrence Walker, MD is a Orthopaedic Surgery Physician provider in Lake Arrowhead, CA (NPI 1083619910).
Provider details
- NPI number
- 1083619910
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C42773 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 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
1,155 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 | 584 | $131 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 327 | $81 |
| X-Ray of Knee, 4 Or More Views73564 | 139 | $50 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 33 | $172 |
| Injection of Trigger Points, 1-2 Muscles20552 | 23 | $48 |
| X-Ray of Hip, 2-3 Views73502 | 20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 951 | 189 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 482 | 95 |
| Meloxicam | 135 | 44 |
| Celecoxib | 102 | 40 |
| Ibuprofen | 93 | 34 |
| Diclofenac Sodium | 88 | 42 |
| Gabapentin | 86 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13 across 1 record (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
- 2005-06-16
- Last updated
- 2012-07-05
Frequently asked questions
- What is Lawrence Walker's NPI number?
- Lawrence Walker's National Provider Identifier (NPI) is 1083619910, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Walker's specialty?
- Lawrence Walker is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Walker located?
- Lawrence Walker's practice location on file with NPPES is 29099 Hospital Road, Lake Arrowhead, CA 92352.
- What is Lawrence Walker's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Walker is (909) 726-6100.
- Does Lawrence Walker accept Medicare?
- Lawrence Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lawrence Walker's NPI active?
- Yes — Lawrence Walker's NPI (1083619910) is active in the NPPES registry as of the last update on 2012-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.