Timothy Williams, M.D.
NPI 1801987763 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Greenville, SC
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Williams, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Greenville, SC (NPI 1801987763).
Provider details
- NPI number
- 1801987763
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 16745 (SC)
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
19 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
125 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) |
|---|---|---|
| Harvest of Vein Using an Endoscope33508 | 40 | $15 |
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 40 | $1,633 |
| Coronary Artery Bypass Using Vein Or Artery Graft, 2 Grafts33518 | 22 | $375 |
| Coronary Artery Bypass Using Vein Or Artery Graft, 3 Grafts33519 | 12 | $499 |
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 11 | $692 |
Typical Medicare-allowed amounts for these services range $15–$1,633 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$648 across 13 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
- 2006-09-27
- Last updated
- 2007-11-30
Frequently asked questions
- What is Timothy Williams's NPI number?
- Timothy Williams's National Provider Identifier (NPI) is 1801987763, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Williams's specialty?
- Timothy Williams is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Williams located?
- Timothy Williams's practice location on file with NPPES is 317 Saint Francis Dr, Greenville, SC 29601-3965.
- What is Timothy Williams's phone number?
- The practice phone number listed in the NPPES registry for Timothy Williams is (864) 255-1317.
- Does Timothy Williams accept Medicare?
- Timothy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Williams's NPI active?
- Yes — Timothy Williams's NPI (1801987763) is active in the NPPES registry as of the last update on 2007-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.