Mary Williams, DNP, FNP-BC, PMHNP-C
NPI 1184806150 · Family Nurse Practitioner · Clarksdale, MS
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Williams, DNP, FNP-BC, PMHNP-C is a Family Nurse Practitioner provider in Clarksdale, MS (NPI 1184806150).
Provider details
- NPI number
- 1184806150
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, FNP-BC, PMHNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 854909 (MS)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
18 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
408 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 | 133 | $97 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 65 | $3 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 64 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 61 | $11 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $70 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 24 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 287 | 75 |
| Gabapentin | 175 | 49 |
| Atorvastatin Calcium | 156 | 42 |
| Losartan Potassium | 150 | 42 |
| Metformin Hcl | 116 | 32 |
| Montelukast Sodium | 109 | 28 |
| Furosemide | 108 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-12-03
- Last updated
- 2026-04-22
- Certified
- 2026-04-22
Frequently asked questions
- What is Mary Williams's NPI number?
- Mary Williams's National Provider Identifier (NPI) is 1184806150, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Williams's specialty?
- Mary Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Williams located?
- Mary Williams's practice location on file with NPPES is 125 Highway 322, Clarksdale, MS 38614.
- What is Mary Williams's phone number?
- The practice phone number listed in the NPPES registry for Mary Williams is (662) 351-1970.
- Does Mary Williams accept Medicare?
- Mary Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Williams's NPI active?
- Yes — Mary Williams's NPI (1184806150) is active in the NPPES registry as of the last update on 2026-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.