Lionel Williams, MD
NPI 1285631994 · Anesthesiology Physician · Poughkeepsie, NY
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lionel Williams, MD is a Anesthesiology Physician provider in Poughkeepsie, NY (NPI 1285631994).
Provider details
- NPI number
- 1285631994
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 180410 (NY)
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
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
485 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) |
|---|---|---|
| Anesthesia for X-Ray Or Radiation Therapy01922 | 73 | $99 |
| Anesthesia for Insertion of Permanent Heart Pacemaker00530 | 66 | $130 |
| Anesthesia for Procedure to Assess Heart Electrical Activity00537 | 53 | $247 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 53 | $45 |
| Anesthesia for Procedure to Correct Abnormal Heart Rhythm00410 | 39 | $56 |
| Anesthesia for Procedure on Heart and Large Blood Vessels00560 | 39 | $439 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$76 across 3 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
- 2005-07-07
- Last updated
- 2009-11-04
Frequently asked questions
- What is Lionel Williams's NPI number?
- Lionel Williams's National Provider Identifier (NPI) is 1285631994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lionel Williams's specialty?
- Lionel Williams is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Lionel Williams located?
- Lionel Williams's practice location on file with NPPES is 45 Reade Pl, Poughkeepsie, NY 12601-3947.
- What is Lionel Williams's phone number?
- The practice phone number listed in the NPPES registry for Lionel Williams is (845) 431-5629.
- Does Lionel Williams accept Medicare?
- Lionel Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lionel Williams's NPI active?
- Yes — Lionel Williams's NPI (1285631994) is active in the NPPES registry as of the last update on 2009-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.