Lawrence Williams, MD
NPI 1639373418 · Clinical Pathology/Laboratory Medicine Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lawrence Williams, MD is a Clinical Pathology/Laboratory Medicine Physician provider in Scottsdale, AZ (NPI 1639373418).
Provider details
- NPI number
- 1639373418
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD.32794 (AL)
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
19 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
1,865 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) |
|---|---|---|
| Protein Measurement, Serum84165 | 1,015 | $17 |
| Immunologic Analysis Technique on Serum (immunofixation)86334 | 344 | $17 |
| Blood Bank Physician Services for Cross Match And/Or Evaluation and Written Report86077 | 183 | $47 |
| Mechanical Separation of Plasma From Blood36514 | 108 | $89 |
| Protein Measurement, Serum84165 | 82 | $17 |
| Blood Bank Physician Services for Cross Match And/Or Evaluation and Written Report86077 | 58 | $51 |
| Immunologic Analysis Technique on Serum (immunofixation) |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$624 across 4 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)
- 619 19th St SWp-P230fBirmingham, AL 35249-7331Phone: (205) 934-7774Fax: (205) 975-4468
Registry dates
- Enumerated
- 2007-06-13
- Last updated
- 2020-10-09
- Certified
- 2020-10-09
Frequently asked questions
- What is Lawrence Williams's NPI number?
- Lawrence Williams's National Provider Identifier (NPI) is 1639373418, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Williams's specialty?
- Lawrence Williams is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Williams located?
- Lawrence Williams's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259-5452.
- What is Lawrence Williams's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Williams is (480) 301-8000.
- Does Lawrence Williams accept Medicare?
- Lawrence Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lawrence Williams's NPI active?
- Yes — Lawrence Williams's NPI (1639373418) is active in the NPPES registry as of the last update on 2020-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.