Marilyn Williams, NP
NPI 1043468234 · Family Nurse Practitioner · Greenville, MS
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marilyn Williams, NP is a Family Nurse Practitioner provider in Greenville, MS (NPI 1043468234).
Provider details
- NPI number
- 1043468234
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- R745833 (MS)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
126 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 | 60 | $98 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $70 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 24 | $10 |
Typical Medicare-allowed amounts for these services range $10–$98 (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 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 98 | 50 |
| Atorvastatin Calcium | 92 | 48 |
| Metformin Hcl | 60 | 20 |
| Gabapentin | 58 | 34 |
| Losartan Potassium | 52 | 26 |
| Hydralazine Hcl | 50 | 22 |
| Amoxicillin | 45 | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-09-03
- Last updated
- 2026-03-19
- Certified
- 2026-03-19
Frequently asked questions
- What is Marilyn Williams's NPI number?
- Marilyn Williams's National Provider Identifier (NPI) is 1043468234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Williams's specialty?
- Marilyn Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marilyn Williams located?
- Marilyn Williams's practice location on file with NPPES is 1202 Hospital St, Greenville, MS 38703-3213.
- What is Marilyn Williams's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Williams is (662) 334-8564.
- Does Marilyn Williams accept Medicare?
- Marilyn Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marilyn Williams's NPI active?
- Yes — Marilyn Williams's NPI (1043468234) is active in the NPPES registry as of the last update on 2026-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.