Allyson Williams, APN
NPI 1407115579 · Psychiatric/Mental Health Nurse Practitioner · Memphis, TN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allyson Williams, APN is a Psychiatric/Mental Health Nurse Practitioner provider in Memphis, TN (NPI 1407115579).
Provider details
- NPI number
- 1407115579
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 16644 (TN)
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 tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
377 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 | 122 | $99 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 104 | $61 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 74 | $71 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 32 | $141 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 23 | $92 |
| Testing for Presence of Drug, Read By Direct Observation |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 136 | 18 |
| Clonazepam | 129 | 17 |
| Quetiapine Fumarate | 128 | 23 |
| Lamotrigine | 117 | 20 |
| Trazodone Hcl | 91 | 24 |
| Fluoxetine Hcl | 88 | 17 |
| Zolpidem Tartrate | 88 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,719 across 98 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
Registry dates
- Enumerated
- 2012-05-10
- Last updated
- 2025-01-13
- Certified
- 2025-01-13
Frequently asked questions
- What is Allyson Williams's NPI number?
- Allyson Williams's National Provider Identifier (NPI) is 1407115579, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allyson Williams's specialty?
- Allyson Williams is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Allyson Williams located?
- Allyson Williams's practice location on file with NPPES is 1910 Madison Ave # 2628, Memphis, TN 38104-2620.
- What is Allyson Williams's phone number?
- The practice phone number listed in the NPPES registry for Allyson Williams is (901) 352-8994.
- Does Allyson Williams accept Medicare?
- Allyson Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allyson Williams's NPI active?
- Yes — Allyson Williams's NPI (1407115579) is active in the NPPES registry as of the last update on 2025-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.