2026 NPPES data Nephrology Physician NPI 1831458827 M.D.
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ANTONEY FERREY, M.D.

Nephrology Physician in ORANGE, 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
877
Medicare Part D claims · 137 beneficiaries · Nephrology Physician avg: 1K
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]
Industry payments
$122.64
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ANTONEY FERREY, M.D. is a Nephrology Physician ([object Object]) practicing in ORANGE, California with a Medicare Part D prescribing footprint of 877 claims across 137 beneficiaries . Their CMS MIPS Final Score of 100/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $122.64 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ANTONEY FERREY, M.D. reported a CMS MIPS final score of 100 out of 100, above the 83.1 national average, and filed 877 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ANTONEY FERREY, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ANTONEY FERREY, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/10/2012

NPI 1831458827

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

877 40% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Nephrology Physician compares to other specialties among California providers

California providers

Nephrology Physician share within California

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

Medicare quality performance — MIPS

ANTONEY FERREY, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average

High performer (top quartile)
MIPS Final Score
100/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Nephrology Physician) — 100/100 vs national avg 83.1

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).

ANTONEY FERREY, M.D. is a Nephrology Physician provider practicing in ORANGE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1831458827. 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.

ANTONEY FERREY, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 101 THE CITY DR S, ORANGE, CA, 92868, with a listed phone of (714) 880-7812. NPI 1831458827 was issued on 05/10/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FERREY 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 877 prescription claims written by this provider, covering 137 Medicare beneficiaries and totaling roughly $301K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 82.4039), compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

101 THE CITY DR S
ORANGE, CA 92868

Provider Details

NPI 1831458827
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 05/10/2012

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

100
Final Score
Avg: 83.1
82.4039
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where ANTONEY FERREY, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

REGENTS OF THE UNIVERSITY OF CALIFORNIA
ORANGE, CA
UC REGENTS
ORANGE, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 ANTONEY FERREY, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$123

Largest payer

SANOFI-AVENTIS U.S. LLC

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 ANTONEY FERREY, M.D.. To verify ANTONEY FERREY, 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.

877
Total Claims
$301K
Total Drug Cost
137
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,484
Total Day Supply
43,629
Generic Drug Cost
$51K
Antibiotic Claims
20

Patient Demographics

Average Patient Age
60.6 years
Avg HCC Risk Score
4.96
Gender Split
36% female / 64% male
Age Distribution
<65: 70, 65-74: 44, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Tamsulosin Hcl
49
Nifedipine Er
Nifedipine
47
Prednisone
46
Losartan Potassium
44
Amlodipine Besylate
42
Velphoro
Sucroferric Oxyhydroxide
40
Pantoprazole Sodium
37
Furosemide
35
Carvedilol
33
Lokelma
Sodium Zirconium Cyclosilicate
33

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

Nephrology Physician Overview

How ANTONEY FERREY, M.D. fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

ANTONEY FERREY, M.D.'s 877 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in California

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

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

Frequently Asked Questions

What is ANTONEY FERREY, M.D.'s specialty?
ANTONEY FERREY, M.D. specializes in Nephrology Physician and practices in ORANGE, California. Credentials: M.D..
How much does ANTONEY FERREY, M.D. prescribe under Medicare Part D?
In 2023, ANTONEY FERREY, M.D. wrote 877 Medicare Part D claims totaling $301K in drug costs for 137 beneficiaries.
What is ANTONEY FERREY, M.D.'s Medicare quality score?
ANTONEY FERREY, M.D. has a CMS MIPS Final Score of 100/100 (Quality: 82.4039). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ANTONEY FERREY, M.D. located?
ANTONEY FERREY, M.D. is located at 101 THE CITY DR S, ORANGE, CA, 92868. Phone: (714) 880-7812.
What is ANTONEY FERREY, M.D.'s NPI number?
ANTONEY FERREY, M.D.'s National Provider Identifier (NPI) is 1831458827, issued on 05/10/2012.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does ANTONEY FERREY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ANTONEY FERREY, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Nifedipine Er, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANTONEY FERREY, M.D. accept Medicare?
ANTONEY FERREY, M.D. appears in CMS Medicare data with 877 Part D claims and 137 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANTONEY FERREY, M.D.'s credentials?
ANTONEY FERREY, M.D.'s NPI is 1831458827 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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