Ellen Williams, MD
NPI 1811417520 · Family Medicine Physician · Canton, MI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Williams, MD is a Family Medicine Physician provider in Canton, MI (NPI 1811417520).
Provider details
- NPI number
- 1811417520
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301112584 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
434 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 257 | $95 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 87 | $64 |
| Hemoglobin A1c Level83036 | 35 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $81 |
| Administration of Influenza Virus VaccineG0008 | 21 | $33 |
| Admn Sarscov2 Vacc 1 Dose90480 | 12 | $40 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 121 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 516 | 141 |
| Levothyroxine Sodium | 341 | 94 |
| Amlodipine Besylate | 325 | 96 |
| Lisinopril | 228 | 65 |
| Omeprazole | 226 | 70 |
| Losartan Potassium | 182 | 59 |
| Metoprolol Succinate |
Practice location
Mailing address
Additional practice locations (1)
- 14700 E Old US Highway 12Chelsea, MI 48118-1185Phone: (734) 544-3220
Registry dates
- Enumerated
- 2017-06-23
- Last updated
- 2022-07-21
- Certified
- 2020-08-06
Frequently asked questions
- What is Ellen Williams's NPI number?
- Ellen Williams's National Provider Identifier (NPI) is 1811417520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Williams's specialty?
- Ellen Williams is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Williams located?
- Ellen Williams's practice location on file with NPPES is 1600 S Canton Center Rd Ste 200, Canton, MI 48188-6276.
- What is Ellen Williams's phone number?
- The practice phone number listed in the NPPES registry for Ellen Williams is (734) 398-7880.
- Does Ellen Williams accept Medicare?
- Ellen Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Williams's NPI active?
- Yes — Ellen Williams's NPI (1811417520) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.