Ashley Williamson, M.D.
NPI 1548640386 · Vascular Surgery Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashley Williamson, M.D. is a Vascular Surgery Physician provider in Chicago, IL (NPI 1548640386).
Provider details
- NPI number
- 1548640386
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125066659 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
11 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
90 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) |
|---|---|---|
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 36 | $34 |
| Ultrasound Study of Arm and Leg Arteries93922 | 23 | $13 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 16 | $39 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 15 | $22 |
Typical Medicare-allowed amounts for these services range $13–$39 (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.
$7,296 across 21 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)
- 10855 Virginia StCrown Point, IN 46307-0210Phone: (888) 824-0200
Registry dates
- Enumerated
- 2015-06-07
- Last updated
- 2025-06-05
- Certified
- 2025-06-05
Frequently asked questions
- What is Ashley Williamson's NPI number?
- Ashley Williamson's National Provider Identifier (NPI) is 1548640386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ashley Williamson's specialty?
- Ashley Williamson is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ashley Williamson located?
- Ashley Williamson's practice location on file with NPPES is 5841 S Maryland Ave # Mc6040, Chicago, IL 60637-1447.
- What is Ashley Williamson's phone number?
- The practice phone number listed in the NPPES registry for Ashley Williamson is (773) 753-1880.
- Does Ashley Williamson accept Medicare?
- Ashley Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ashley Williamson's NPI active?
- Yes — Ashley Williamson's NPI (1548640386) is active in the NPPES registry as of the last update on 2025-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.