2026 NPPES data Hospitalist Physician NPI 1902224538 M.D.
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CHRISTO ARBONIES, M.D.

Hospitalist Physician in NORTHRIDGE, 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
400
Medicare Part D claims · 72 beneficiaries · Hospitalist Physician avg: 888
What the federal data reveals: CHRISTO ARBONIES, M.D. is a Hospitalist Physician ([object Object]) practicing in NORTHRIDGE, California with a Medicare Part D prescribing footprint of 400 claims across 72 beneficiaries .

What stands out: CHRISTO ARBONIES, M.D. filed 400 Medicare Part D claims in 2023 across NORTHRIDGE, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

CHRISTO ARBONIES, M.D. 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).

CHRISTO ARBONIES, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/01/2014

NPI 1902224538

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

400 55% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in California

How Hospitalist Physician compares to other specialties among California providers

California providers

Hospitalist Physician share within California

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Hospitalist Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hospitalist Physician ABMS/AOA estimate

Est. board-certified rate (Hospitalist Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hospitalist 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).

CHRISTO ARBONIES, M.D. is a Hospitalist Physician provider practicing in NORTHRIDGE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1902224538. 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.

CHRISTO ARBONIES, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 18460 ROSCOE BLVD FL 2, NORTHRIDGE, CA, 91325, with a listed phone of (818) 885-5480. NPI 1902224538 was issued on 04/01/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARBONIES 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 400 prescription claims written by this provider, covering 72 Medicare beneficiaries and totaling roughly $27K in drug spend, with an opioid prescribing rate of 5.0%. 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

18460 ROSCOE BLVD FL 2
NORTHRIDGE, CA 91325

Provider Details

NPI 1902224538
Specialty Hospitalist Physician
Credentials M.D.
Gender Male
NPI Issued 04/01/2014

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 CHRISTO ARBONIES, M.D.. To verify CHRISTO ARBONIES, M.D.'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.

400
Total Claims
$27K
Total Drug Cost
72
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
411
Total Day Supply
10,848
Generic Drug Cost
$6K
Opioid Claims
20 (5.0% rate)

Patient Demographics

Average Patient Age
77.3 years
Avg HCC Risk Score
2.09
Gender Split
44% female / 56% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
31
Trazodone Hcl
22
Eliquis
Apixaban
19
Tamsulosin Hcl
18
Lactulose
15
Omeprazole
11

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

Hospitalist Physician Overview

How CHRISTO ARBONIES, M.D. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

CHRISTO ARBONIES, M.D.'s 400 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in California

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

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHRISTO ARBONIES, M.D.'s specialty?
CHRISTO ARBONIES, M.D. specializes in Hospitalist Physician and practices in NORTHRIDGE, California. Credentials: M.D..
How much does CHRISTO ARBONIES, M.D. prescribe under Medicare Part D?
In 2023, CHRISTO ARBONIES, M.D. wrote 400 Medicare Part D claims totaling $27K in drug costs for 72 beneficiaries.
Where is CHRISTO ARBONIES, M.D. located?
CHRISTO ARBONIES, M.D. is located at 18460 ROSCOE BLVD FL 2, NORTHRIDGE, CA, 91325. Phone: (818) 885-5480.
What is CHRISTO ARBONIES, M.D.'s NPI number?
CHRISTO ARBONIES, M.D.'s National Provider Identifier (NPI) is 1902224538, issued on 04/01/2014.
Does CHRISTO ARBONIES, M.D. prescribe opioids?
Yes, CHRISTO ARBONIES, M.D. had 20 opioid claims in 2023 with an opioid prescribing rate of 5.0%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does CHRISTO ARBONIES, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CHRISTO ARBONIES, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Trazodone Hcl, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTO ARBONIES, M.D. accept Medicare?
CHRISTO ARBONIES, M.D. appears in CMS Medicare data with 400 Part D claims and 72 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTO ARBONIES, M.D.'s credentials?
CHRISTO ARBONIES, M.D.'s NPI is 1902224538 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

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