NPI registry status
Active
2026 NPPES data Addiction (Substance Use Disorder) Psychologist NPI 1144959032 LASAC
Verify on CMS → Thomas Warren, LASAC
Addiction (Substance Use Disorder) Psychologist in Scottsdale, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 969 in Addiction (Substance Use Disorder) Psychologist, 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.
What the federal data shows
Thomas Warren, LASAC is an Addiction (Substance Use Disorder) Psychologist in Scottsdale, Arizona, listed in the federal CMS National Provider Identifier registry.
- #292
- Addiction (Substance Use Disorder) Psychologist rank among Arizona specialties
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.
Federal trust snapshot
What official records show about Thomas Warren, LASAC
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1144959032), first enumerated 06/07/2022.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1144959032 · Addiction (Substance Use Disorder) Psychologist
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1144959032
- ENUM-RECENT 2022
- TAX-NARROW 969
- RX-NONE No Part D
- BOOK-THIN 14 in Arizona
- PHOTO-ENUM William Mellick, PHD · 2022
What does the federal data show about Thomas Warren, LASAC?
Quality data not reportedPrimary specialty
Addiction (Substance Use Disorder) Psychologist
Specialty distribution in Arizona
How Addiction (Substance Use Disorder) Psychologist compares to other specialties among Arizona 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 Addiction (Substance Use Disorder) Psychologist. 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).
Practice Address
Provider Details
| NPI | 1144959032 |
|---|---|
| Specialty | Addiction (Substance Use Disorder) Psychologist |
| Credentials | LASAC |
| Gender | Male |
| NPI Issued | 06/07/2022 |
More Addiction (Substance Use Disorder) Psychologist in AZ →
All providers in Arizona →
Compare specialties →
Addiction (Substance Use Disorder) Psychologist Overview
How Thomas Warren, LASAC fits within the Addiction (Substance Use Disorder) Psychologist landscape nationally.
969
Addiction (Substance Use Disorder) Psychologist Providers in US
50
States with Addiction (Substance Use Disorder) Psychologist
1,391
Avg Claims per Provider
Nationwide Addiction (Substance Use Disorder) Psychologist peers with similar MIPS or enrollment year
Two federal-record peer sets for Warren, both outside Arizona so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction (Substance Use Disorder) Psychologist Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Warren.
One of 14 Addiction (Substance Use Disorder) Psychologist providers enrolled in Arizona, 5 are shown here.
Frequently Asked Questions
What is Thomas Warren, LASAC's specialty? ▼
Thomas Warren, LASAC specializes in Addiction (Substance Use Disorder) Psychologist and practices in Scottsdale, Arizona. Credentials: LASAC.
Where is Thomas Warren, LASAC located? ▼
Thomas Warren, LASAC is located at 7025 E OAK ST, Scottsdale, AZ, 85257. Phone: (432) 352-5897.
What is Thomas Warren, LASAC's NPI number? ▼
Thomas Warren, LASAC's National Provider Identifier (NPI) is 1144959032, issued on 06/07/2022.
How many Addiction (Substance Use Disorder) Psychologist providers are there in the US? ▼
There are 969 Addiction (Substance Use Disorder) Psychologist providers across 50 states in the US. The average Addiction (Substance Use Disorder) Psychologist provider writes 1,391 Medicare Part D claims per year.
Does Thomas Warren, LASAC accept Medicare? ▼
Thomas Warren, LASAC appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Warren, LASAC's credentials? ▼
Thomas Warren, LASAC's NPI is 1144959032 with credentials LASAC. 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.
- 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.