Deborah Williams, MD
NPI 1578582243 · Internal Medicine Physician · Madison, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Deborah Williams, MD is a Internal Medicine Physician provider in Madison, WI (NPI 1578582243).
Provider details
- NPI number
- 1578582243
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 47345 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,432 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 651 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 379 | $84 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 264 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 250 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 234 | $118 |
| Hemoglobin A1c Level83036 | 216 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 145 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 444 | 127 |
| Levothyroxine Sodium | 438 | 102 |
| Amlodipine Besylate | 287 | 83 |
| Omeprazole | 276 | 73 |
| Lisinopril | 249 | 68 |
| Gabapentin | 217 | 38 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2012-09-24
Frequently asked questions
- What is Deborah Williams's NPI number?
- Deborah Williams's National Provider Identifier (NPI) is 1578582243, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Deborah Williams's specialty?
- Deborah Williams is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Deborah Williams located?
- Deborah Williams's practice location on file with NPPES is 675 W Washington Ave, Madison, WI 53703-2637.
- What is Deborah Williams's phone number?
- The practice phone number listed in the NPPES registry for Deborah Williams is (608) 257-9700.
- Does Deborah Williams accept Medicare?
- Deborah Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Deborah Williams's NPI active?
- Yes — Deborah Williams's NPI (1578582243) is active in the NPPES registry as of the last update on 2012-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.