ALYSSA THOMAS, MD
Addiction Medicine (Family Medicine) Physician in LOS ANGELES, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
ALYSSA THOMAS, MD filed 941 Medicare Part D claims in 2023 as a Addiction Medicine (Family Medicine) Physician in LOS ANGELES, California.
- 941
- Part D claims, 2023
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.
ALYSSA THOMAS, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
941 Top 25% higher than 75% 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
ALYSSA THOMAS, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about ALYSSA THOMAS, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in California
How Addiction Medicine (Family Medicine) Physician compares to other specialties among California providers
Addiction Medicine (Family Medicine) Physician share within California
Addiction Medicine (Family Medicine) Physician is one of the more visible NUCC categories in California
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Addiction Medicine (Family Medicine) Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Addiction Medicine (Family Medicine) Physician ABMS/AOA estimate
Est. board-certified rate (Addiction Medicine (Family Medicine) Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Addiction Medicine (Family Medicine) Physician US NPIs
Specialty board-certified rate — Addiction Medicine (Family Medicine) Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
ALYSSA THOMAS, MD appears in the CMS NPPES registry as a Addiction Medicine (Family Medicine) Physician provider holding MD credentials at 442 CROCKER ST, LOS ANGELES, CA, 90013, with a listed phone of (213) 727-6717. NPI 1518548346 was issued on 04/14/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what THOMAS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 941 prescription claims written by this provider, covering 158 Medicare beneficiaries and totaling roughly $146K in drug spend, with an opioid prescribing rate of 1.2%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Addiction Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 763 enrolled providers across 48 states and an average of 1,134 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 | 1518548346 |
|---|---|
| Specialty | Addiction Medicine (Family Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/14/2021 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm ALYSSA THOMAS, MD's current license status, disciplinary history, and board certifications with the Medical Board of California in California before relying on this page for a clinical or care decision.
How we sourced this profile
License & disciplinary context — California MBC 2023 annual report
Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to ALYSSA THOMAS, MD. To verify ALYSSA THOMAS, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
Prescribing Breakdown
- 30-Day Fills
- 1,841
- Total Day Supply
- 53,307
- Generic Drug Cost
- $27K
- Opioid Claims
- 11 (1.2% rate)
- Antibiotic Claims
- 15
Patient Demographics
- Average Patient Age
- 68.6 years
- Avg HCC Risk Score
- 1.78
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 44, 65-74: 72, 75-84: 30, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What ALYSSA THOMAS, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
48 claims
- Gabapentin
Gabapentin
43 claims
- Sertraline Hcl
Sertraline Hcl
35 claims
- Lisinopril
Lisinopril
34 claims
- Levothyroxine Sodium
Levothyroxine Sodium
32 claims
- Amlodipine Besylate
Amlodipine Besylate
29 claims
- Furosemide
Furosemide
26 claims
- Losartan Potassium
Losartan Potassium
23 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 48 |
| Gabapentin | 43 |
| Sertraline Hcl | 35 |
| Lisinopril | 34 |
| Levothyroxine Sodium | 32 |
| Amlodipine Besylate | 29 |
| Furosemide | 26 |
| Losartan Potassium | 23 |
| Omeprazole | 23 |
| Metoprolol Succinate | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Addiction Medicine (Family Medicine) Physician Overview
How ALYSSA THOMAS, MD fits within the Addiction Medicine (Family Medicine) Physician landscape nationally.
ALYSSA THOMAS, MD's 941 claims are below the specialty average of 1,134.
Nearby Addiction Medicine (Family Medicine) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as THOMAS.
Compare Addiction Medicine (Family Medicine) Physician nationally: see state-by-state distribution →
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
Explore California
Frequently Asked Questions
What is ALYSSA THOMAS, MD's specialty? ▼
How much does ALYSSA THOMAS, MD prescribe under Medicare Part D? ▼
Where is ALYSSA THOMAS, MD located? ▼
What is ALYSSA THOMAS, MD's NPI number? ▼
Does ALYSSA THOMAS, MD prescribe opioids? ▼
How many Addiction Medicine (Family Medicine) Physician providers are there in the US? ▼
What drugs does ALYSSA THOMAS, MD prescribe most often? ▼
Does ALYSSA THOMAS, MD accept Medicare? ▼
How can I verify ALYSSA THOMAS, MD's credentials? ▼
Data Sources
- 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