NPI registry status
Active
2026 NPPES data Addiction Medicine (Family Medicine) Physician NPI 1689170573 DO
Verify on CMS → Alexandra Arenson, DO
Addiction Medicine (Family Medicine) Physician in Walnut Creek, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 763 in Addiction Medicine (Family Medicine) 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
170
Medicare Part D claims · 38 beneficiaries · Addiction Medicine (Family Medicine) Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Alexandra Arenson, DO filed 170 Medicare Part D claims in 2023 as a Addiction Medicine (Family Medicine) Physician in Walnut Creek, California.
- 170
- 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.
Alexandra Arenson, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
170 35th percentile higher than 35% 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-eligible specialty (heuristic, not verified)
Alexandra Arenson, DO 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 Alexandra Arenson, DO?
Quality data not reportedPrimary specialty
Addiction Medicine (Family Medicine) Physician
Medicare Part D claims
170 85% vs specialty avg
Specialty distribution in California
How Addiction Medicine (Family Medicine) Physician compares to other specialties among California 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 Medicine (Family Medicine) 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).
Alexandra Arenson, DO appears in the CMS NPPES registry as a Addiction Medicine (Family Medicine) Physician provider holding DO credentials at 710 S BROADWAY STE 209, Walnut Creek, CA, 94596, with a listed phone of (925) 295-4145. NPI 1689170573 was issued on 04/01/2018.
Medicare Part D records for calendar year 2023 show 170 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $11K in drug spend, with an opioid prescribing rate of 12.4%.
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 | 1689170573 |
|---|---|
| Specialty | Addiction Medicine (Family Medicine) Physician |
| Credentials | DO |
| Gender | Female |
| NPI Issued | 04/01/2018 |
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 Alexandra Arenson, DO. To verify Alexandra Arenson, DO's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
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.
170
Total Claims
$11K
Total Drug Cost
38
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 226
- Total Day Supply
- 5,441
- Generic Drug Cost
- $10K
- Opioid Claims
- 21 (12.4% rate)
Patient Demographics
- Average Patient Age
- 68.1 years
- Avg HCC Risk Score
- 1.37
- Gender Split
- 55% female / 45% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alexandra Arenson, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
47 claims
- Gabapentin
Gabapentin
22 claims
- Buprenorphine
Buprenorphine
21 claims
- Naltrexone Hcl 15
Naltrexone Hcl
15 claims
| Drug | Claims |
|---|---|
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 47 |
| Gabapentin | 22 |
| Buprenorphine | 21 |
| Naltrexone Hcl | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Family Medicine) Physician in CA →
All providers in California →
Compare specialties →
Addiction Medicine (Family Medicine) Physician Overview
How Alexandra Arenson, DO fits within the Addiction Medicine (Family Medicine) Physician landscape nationally.
763
Addiction Medicine (Family Medicine) Physician Providers in US
48
States with Addiction Medicine (Family Medicine) Physician
1,134
Avg Claims per Provider
Alexandra Arenson, DO's 170 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 Arenson.
Dr. Matthew Abinante
DO, MPH
Huntington Beach, CA
Dr. Paul Abramson
M.D.
San Francisco, CA
Dr. Kami Adibi
M.D.
Los Angeles, CA
Dr. Belis Aladag
MD, MPH, FASAM
Walnut Creek, CA
Dr. Marianne Aldridge
M.D.
Loma Linda, CA
Compare Addiction Medicine (Family Medicine) 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Addiction Medicine (Family Medicine) 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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Frequently Asked Questions
What is Alexandra Arenson, DO's specialty? ▼
Alexandra Arenson, DO specializes in Addiction Medicine (Family Medicine) Physician and practices in Walnut Creek, California. Credentials: DO.
How much does Alexandra Arenson, DO prescribe under Medicare Part D? ▼
In 2023, Alexandra Arenson, DO wrote 170 Medicare Part D claims totaling $11K in drug costs for 38 beneficiaries.
Where is Alexandra Arenson, DO located? ▼
Alexandra Arenson, DO is located at 710 S BROADWAY STE 209, Walnut Creek, CA, 94596. Phone: (925) 295-4145.
What is Alexandra Arenson, DO's NPI number? ▼
Alexandra Arenson, DO's National Provider Identifier (NPI) is 1689170573, issued on 04/01/2018.
Does Alexandra Arenson, DO prescribe opioids? ▼
Yes, Alexandra Arenson, DO had 21 opioid claims in 2023 with an opioid prescribing rate of 12.4%.
How many Addiction Medicine (Family Medicine) Physician providers are there in the US? ▼
There are 763 Addiction Medicine (Family Medicine) Physician providers across 48 states in the US. The average Addiction Medicine (Family Medicine) Physician provider writes 1,134 Medicare Part D claims per year.
What drugs does Alexandra Arenson, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Alexandra Arenson, DO's most frequently prescribed drugs include Buprenorphine-Naloxone, Gabapentin, Buprenorphine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alexandra Arenson, DO accept Medicare? ▼
Alexandra Arenson, DO appears in CMS Medicare data with 170 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexandra Arenson, DO's credentials? ▼
Alexandra Arenson, DO's NPI is 1689170573 with credentials DO. 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.