Ana Williams, NP
NPI 1548741812 · Psychiatric/Mental Health Nurse Practitioner · Mesa, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ana Williams, NP is a Psychiatric/Mental Health Nurse Practitioner provider in Mesa, AZ (NPI 1548741812).
Provider details
- NPI number
- 1548741812
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- AP11657 (AZ)
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
7 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
35 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 | 35 | $79 |
Typical Medicare-allowed amounts for these services range $79–$79 (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 |
|---|---|---|
| Trazodone Hcl | 165 | 53 |
| Quetiapine Fumarate | 160 | 28 |
| Buspirone Hcl | 115 | 20 |
| Clozapine | 111 | 11 |
| Lamotrigine | 110 | 27 |
| Mirtazapine | 106 | 17 |
| Duloxetine Hcl | 84 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,705 across 62 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
- 2018-08-24
- Last updated
- 2022-10-31
- Certified
- 2022-10-31
Frequently asked questions
- What is Ana Williams's NPI number?
- Ana Williams's National Provider Identifier (NPI) is 1548741812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ana Williams's specialty?
- Ana 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 Ana Williams located?
- Ana Williams's practice location on file with NPPES is 460 N Mesa Dr, Mesa, AZ 85201-5973.
- What is Ana Williams's phone number?
- The practice phone number listed in the NPPES registry for Ana Williams is (480) 831-7566.
- Does Ana Williams accept Medicare?
- Ana Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ana Williams's NPI active?
- Yes — Ana Williams's NPI (1548741812) is active in the NPPES registry as of the last update on 2022-10-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.