2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1932369675 MD
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AREF BHUIYA, MD

Addiction Medicine (Internal Medicine) Physician in WESTLAKE VILLAGE, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
343
Medicare Part D claims · 16 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$501.49
10 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

AREF BHUIYA, MD filed 343 Medicare Part D claims in 2023 as a Addiction Medicine (Internal Medicine) Physician in WESTLAKE VILLAGE, California, prescribing 97% generic.

343
Part D claims, 2023
97%
generic prescribing
$501.49
industry payments (Sunshine Act)

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.

AREF BHUIYA, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

343 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

AREF BHUIYA, 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 AREF BHUIYA, MD?

Quality data not reported

NPI registry status

Active

Issued 06/16/2008

NPI 1932369675

Primary specialty

Addiction Medicine (Internal Medicine) Physician

Niche

553 US NPIs in this specialty

Medicare Part D claims

343 76% vs specialty avg

2023 prescription claims

Specialty avg: 1,403

Specialty distribution in California

How Addiction Medicine (Internal Medicine) Physician compares to other specialties among California providers

California providers

Addiction Medicine (Internal Medicine) Physician share within California

1. Addiction Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Internal Medicine) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Addiction Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Addiction Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

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).

AREF BHUIYA, MD is a Addiction Medicine (Internal Medicine) Physician provider practicing in WESTLAKE VILLAGE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1932369675. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

AREF BHUIYA, MD appears in the CMS NPPES registry as a Addiction Medicine (Internal Medicine) Physician provider holding MD credentials at 5655 LINDERO CANYON RD STE 202, WESTLAKE VILLAGE, CA, 91362, with a listed phone of (818) 597-3223. NPI 1932369675 was issued on 06/16/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BHUIYA 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 343 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $32K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 55.7%. 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 (Internal Medicine) Physician is a narrow specialty nationwide, with 553 enrolled providers across 46 states and an average of 1,403 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

5655 LINDERO CANYON RD STE 202
WESTLAKE VILLAGE, CA 91362

Provider Details

NPI 1932369675
Specialty Addiction Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 06/16/2008

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 AREF BHUIYA, MD. Source: openpaymentsdata.cms.gov.

Total received

$501

Largest payer

REVANCE THERAPEUTICS, 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.

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 AREF BHUIYA, MD. To verify AREF BHUIYA, MD'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.

Brand vs generic prescribing mix · Generic-heavy

AREF BHUIYA, MD — brand share 3.0%
Specialty average (est.)

3% brand-name claims vs 97% generic, on 343 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

343
Total Claims
$32K
Total Drug Cost
16
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
440
Total Day Supply
12,204
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$19K
Generic Drug Cost
$13K
Opioid Claims
191 (55.7% rate)

Patient Demographics

Average Patient Age
67.1 years
Avg HCC Risk Score
1.08

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Oxycodone Hcl
84
Morphine Sulfate Er
Morphine Sulfate
47
Gabapentin
40
Hydromorphone Hcl
36
Buprenorphine Hcl
14
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
13
Oxycontin
Oxycodone Hcl
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Addiction Medicine (Internal Medicine) Physician Overview

How AREF BHUIYA, MD fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.

553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider

AREF BHUIYA, MD's 343 claims are below the specialty average of 1,403.

Nearby Addiction Medicine (Internal Medicine) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as BHUIYA.

Compare Addiction Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AREF BHUIYA, MD's specialty?
AREF BHUIYA, MD specializes in Addiction Medicine (Internal Medicine) Physician and practices in WESTLAKE VILLAGE, California. Credentials: MD.
How much does AREF BHUIYA, MD prescribe under Medicare Part D?
In 2023, AREF BHUIYA, MD wrote 343 Medicare Part D claims totaling $32K in drug costs for 16 beneficiaries.
Where is AREF BHUIYA, MD located?
AREF BHUIYA, MD is located at 5655 LINDERO CANYON RD STE 202, WESTLAKE VILLAGE, CA, 91362. Phone: (818) 597-3223.
What is AREF BHUIYA, MD's NPI number?
AREF BHUIYA, MD's National Provider Identifier (NPI) is 1932369675, issued on 06/16/2008.
Does AREF BHUIYA, MD prescribe more brand-name or generic drugs?
AREF BHUIYA, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $19K in brand drug costs.
Does AREF BHUIYA, MD prescribe opioids?
Yes, AREF BHUIYA, MD had 191 opioid claims in 2023 with an opioid prescribing rate of 55.7%.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US?
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does AREF BHUIYA, MD prescribe most often?
Based on 2023 Medicare Part D data, AREF BHUIYA, MD's most frequently prescribed drugs include Oxycodone Hcl, Morphine Sulfate Er, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AREF BHUIYA, MD accept Medicare?
AREF BHUIYA, MD appears in CMS Medicare data with 343 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AREF BHUIYA, MD's credentials?
AREF BHUIYA, MD's NPI is 1932369675 with credentials MD. 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

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