Marlene Williams, M.D.
NPI 1164450599 · Cardiovascular Disease Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marlene Williams, M.D. is a Cardiovascular Disease Physician provider in Baltimore, MD (NPI 1164450599).
Provider details
- NPI number
- 1164450599
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D53313 (MD)
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
20 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
3,470 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 2,051 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 357 | $69 |
| Critical Care, First 30-74 Minutes99291 | 241 | $217 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 132 | $121 |
| 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 | 97 | $17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 57 | 22 |
| Apixabanbrand: Eliquis | 33 | — |
| Losartan Potassium | 28 | — |
| Spironolactone | 27 | — |
| Atorvastatin Calcium | 22 | — |
| Lisinopril | 15 | — |
| Ezetimibe |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2023-03-31
- Certified
- 2023-03-31
Frequently asked questions
- What is Marlene Williams's NPI number?
- Marlene Williams's National Provider Identifier (NPI) is 1164450599, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marlene Williams's specialty?
- Marlene Williams is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Marlene Williams located?
- Marlene Williams's practice location on file with NPPES is 4940 Eastern Ave, Baltimore, MD 21224-2735.
- What is Marlene Williams's phone number?
- The practice phone number listed in the NPPES registry for Marlene Williams is (410) 550-4642.
- Does Marlene Williams accept Medicare?
- Marlene Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marlene Williams's NPI active?
- Yes — Marlene Williams's NPI (1164450599) is active in the NPPES registry as of the last update on 2023-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.