Anna Williamson, FNP
NPI 1447807805 · Nurse Practitioner · Hattiesburg, MS
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anna Williamson, FNP is a Nurse Practitioner provider in Hattiesburg, MS (NPI 1447807805).
Provider details
- NPI number
- 1447807805
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 205062 (LA)
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 tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,030 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 813 | $97 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $69 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 33 | $9 |
| Measurement of Liver Stiffness91200 | 28 | $22 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 14 | $122 |
Typical Medicare-allowed amounts for these services range $9–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 626 | 205 |
| Famotidine | 522 | 186 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 312 | 312 |
| Omeprazole | 269 | 93 |
| Linaclotidebrand: Linzess | 232 | 68 |
| Dicyclomine Hcl | 179 | 76 |
| Sucralfate | 169 | 83 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,064 across 75 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 433 Plaza St Ste 3aBogalusa, LA 70427-3729Phone: (985) 730-6970Fax: (985) 730-7269
- 648 Crestwood DriveSuite 104Covington, LA 70433Phone: (985) 805-2555Fax: (985) 400-5303
- 1150 Robert Blvd Ste 220Slidell, LA 70458-2006Phone: (985) 805-2555Fax: (985) 400-5303
Registry dates
- Enumerated
- 2019-08-21
- Last updated
- 2021-09-15
- Certified
- 2021-09-15
Frequently asked questions
- What is Anna Williamson's NPI number?
- Anna Williamson's National Provider Identifier (NPI) is 1447807805, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anna Williamson's specialty?
- Anna Williamson is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Anna Williamson located?
- Anna Williamson's practice location on file with NPPES is 415 S 28th Ave, Hattiesburg, MS 39401-7246.
- What is Anna Williamson's phone number?
- The practice phone number listed in the NPPES registry for Anna Williamson is (601) 268-5680.
- Does Anna Williamson accept Medicare?
- Anna Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anna Williamson's NPI active?
- Yes — Anna Williamson's NPI (1447807805) is active in the NPPES registry as of the last update on 2021-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.