Marc Williams, MD
NPI 1891887105 · Family Medicine Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Williams, MD is a Family Medicine Physician provider in Cleveland, OH (NPI 1891887105).
Provider details
- NPI number
- 1891887105
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35052331 (OH)
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
230 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 | 101 | $65 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 66 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $54 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 22 | $54 |
Typical Medicare-allowed amounts for these services range $16–$65 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 208 | 125 |
| Levothyroxine Sodium | 106 | 61 |
| Amlodipine Besylate | 102 | 62 |
| Lisinopril | 98 | 51 |
| Losartan Potassium | 74 | 42 |
| Bisoprolol/Hydrochlorothiazidebrand: Bisoprolol-Hydrochlorothiazide | 65 | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2008-02-25
Frequently asked questions
- What is Marc Williams's NPI number?
- Marc Williams's National Provider Identifier (NPI) is 1891887105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Williams's specialty?
- Marc Williams is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Williams located?
- Marc Williams's practice location on file with NPPES is 9500 Euclid Ave, Cleveland, OH 44195-0001.
- What is Marc Williams's phone number?
- The practice phone number listed in the NPPES registry for Marc Williams is (800) 223-2273.
- Does Marc Williams accept Medicare?
- Marc Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Williams's NPI active?
- Yes — Marc Williams's NPI (1891887105) is active in the NPPES registry as of the last update on 2008-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.