NPI registry status
Active
2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1255479903 M.D.
Verify on CMS → Andrew Williams, M.D.
Child & Adolescent Psychiatry Physician in New Orleans, Louisiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,160 in Child & Adolescent Psychiatry Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
276
Medicare Part D claims · 28 beneficiaries · Child & Adolescent Psychiatry Physician avg: 600
Industry payments
$157.04
7 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Andrew Williams, M.D. filed 276 Medicare Part D claims in 2023 as a Child & Adolescent Psychiatry Physician in New Orleans, Louisiana.
- 276
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Andrew Williams, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
276 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Andrew Williams, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Andrew Williams, M.D.?
Quality data not reportedPrimary specialty
Child & Adolescent Psychiatry Physician
Medicare Part D claims
276 54% vs specialty avg
Specialty distribution in Louisiana
How Child & Adolescent Psychiatry Physician compares to other specialties among Louisiana providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Child & Adolescent Psychiatry Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Andrew Williams, M.D. appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding M.D. credentials at 3450 CHESTNUT ST, New Orleans, LA, 70115, with a listed phone of (504) 412-1580. NPI 1255479903 was issued on 02/02/2007.
Medicare Part D records for calendar year 2023 show 276 prescription claims written by this provider, covering 28 Medicare beneficiaries and totaling roughly $7K in drug spend.
Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1255479903 |
|---|---|
| Specialty | Child & Adolescent Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/02/2007 |
Hospital and facility affiliations
Facilities where Andrew Williams, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
South Louisiana Medical Associates
Houma, LA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Andrew Williams, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$157
Largest payer
Teva Pharmaceuticals USA, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
276
Total Claims
$7K
Total Drug Cost
28
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 308
- Total Day Supply
- 9,152
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 57.7 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 43% female / 57% male
- Age Distribution
- <65: 14, 65-74: N/A, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Andrew Williams, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trazodone Hcl
Trazodone Hcl
32 claims
- Sertraline Hcl
Sertraline Hcl
31 claims
- Bupropion Xl
Bupropion Xl
20 claims
- Duloxetine Hcl
Duloxetine Hcl
16 claims
- Escitalopram Oxalate
Escitalopram Oxalate
16 claims
- Risperidone
Risperidone
16 claims
- Amitriptyline Hcl
Amitriptyline Hcl
13 claims
- Clonazepam
Clonazepam
13 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 32 |
| Sertraline Hcl | 31 |
| Bupropion Xl Bupropion Hcl | 20 |
| Duloxetine Hcl | 16 |
| Escitalopram Oxalate | 16 |
| Risperidone | 16 |
| Amitriptyline Hcl | 13 |
| Clonazepam | 13 |
| Clozapine | 13 |
| Gabapentin | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Child & Adolescent Psychiatry Physician in LA →
All providers in Louisiana →
Compare specialties →
Child & Adolescent Psychiatry Physician Overview
How Andrew Williams, M.D. fits within the Child & Adolescent Psychiatry Physician landscape nationally.
6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider
Andrew Williams, M.D.'s 276 claims are below the specialty average of 600.
Nearby Child & Adolescent Psychiatry Physician Providers in Louisiana
Other clinicians with the same primary specialty enrolled in Louisiana, drawn from the same CMS NPPES roster as Williams.
Dr. Isfana Ali
M.D.
Mandeville, LA
Dr. Milton Anderson
MD
New Orleans, LA
Josefina Baltazar
Hammond, LA
Dr. Cheryll Bowers-Stephens
M.D.
New Orleans, LA
Dr. Renee Bruno
M.D.
Baton Rouge, LA
Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Louisiana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Child & Adolescent Psychiatry Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
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Virtual care options and coverage in 2026
Explore Louisiana
Frequently Asked Questions
What is Andrew Williams, M.D.'s specialty? ▼
Andrew Williams, M.D. specializes in Child & Adolescent Psychiatry Physician and practices in New Orleans, Louisiana. Credentials: M.D..
How much does Andrew Williams, M.D. prescribe under Medicare Part D? ▼
In 2023, Andrew Williams, M.D. wrote 276 Medicare Part D claims totaling $7K in drug costs for 28 beneficiaries.
Where is Andrew Williams, M.D. located? ▼
Andrew Williams, M.D. is located at 3450 CHESTNUT ST, New Orleans, LA, 70115. Phone: (504) 412-1580.
What is Andrew Williams, M.D.'s NPI number? ▼
Andrew Williams, M.D.'s National Provider Identifier (NPI) is 1255479903, issued on 02/02/2007.
How many Child & Adolescent Psychiatry Physician providers are there in the US? ▼
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does Andrew Williams, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Andrew Williams, M.D.'s most frequently prescribed drugs include Trazodone Hcl, Sertraline Hcl, Bupropion Xl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrew Williams, M.D. accept Medicare? ▼
Andrew Williams, M.D. appears in CMS Medicare data with 276 Part D claims and 28 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Williams, M.D.'s credentials? ▼
Andrew Williams, M.D.'s NPI is 1255479903 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.