2026 NPPES data Specialist NPI 1376590604 M.D.
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JOHNNY ARRUDA, M.D.

Specialist in REDLANDS, 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
538
Medicare Part D claims · 202 beneficiaries · Specialist avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JOHNNY ARRUDA, M.D. filed 538 Medicare Part D claims in 2023 as a Specialist in REDLANDS, California, prescribing 98% generic.

538
Part D claims, 2023
98%
generic prescribing

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.

JOHNNY ARRUDA, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

538 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 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

What does the federal data show about JOHNNY ARRUDA, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/30/2006

NPI 1376590604

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

538 64% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in California

How Specialist compares to other specialties among California providers

California providers

Specialist share within California

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within California

Specialty board-certification context

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

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

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

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

JOHNNY ARRUDA, M.D. is a Specialist provider practicing in REDLANDS, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1376590604. 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.

JOHNNY ARRUDA, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 255 TERRACINA BLVD STE 201A, REDLANDS, CA, 92373, with a listed phone of (909) 793-2500. NPI 1376590604 was issued on 05/30/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARRUDA 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 538 prescription claims written by this provider, covering 202 Medicare beneficiaries and totaling roughly $14K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 7.1%. 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

255 TERRACINA BLVD STE 201A
REDLANDS, CA 92373

Provider Details

NPI 1376590604
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 05/30/2006

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 JOHNNY ARRUDA, M.D.. To verify JOHNNY ARRUDA, 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.

Brand vs generic prescribing mix · Generic-heavy

JOHNNY ARRUDA, M.D. — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 538 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.

538
Total Claims
$14K
Total Drug Cost
202
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
819
Total Day Supply
19,590
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$2K
Generic Drug Cost
$12K
Opioid Claims
38 (7.1% rate)
Antibiotic Claims
59

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.62
Gender Split
52% female / 48% male
Age Distribution
<65: 24, 65-74: 103, 75-84: 64, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Fluticasone Propionate
124
Neomycin-Polymyxin-Hydrocort
Neomycin/Polymyxin B/Hydrocort
72
Pantoprazole Sodium
64
Ondansetron Odt
Ondansetron
43
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
36
Cephalexin
32
Methylprednisolone
21
Famotidine
18
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
14
Ciprofloxacin-Dexamethasone
Ciprofloxacin Hcl/Dexameth
14

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

Specialist Overview

How JOHNNY ARRUDA, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

JOHNNY ARRUDA, M.D.'s 538 claims are below the specialty average of 1,474.

Nearby Specialist Providers in California

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHNNY ARRUDA, M.D.'s specialty?
JOHNNY ARRUDA, M.D. specializes in Specialist and practices in REDLANDS, California. Credentials: M.D..
How much does JOHNNY ARRUDA, M.D. prescribe under Medicare Part D?
In 2023, JOHNNY ARRUDA, M.D. wrote 538 Medicare Part D claims totaling $14K in drug costs for 202 beneficiaries.
Where is JOHNNY ARRUDA, M.D. located?
JOHNNY ARRUDA, M.D. is located at 255 TERRACINA BLVD STE 201A, REDLANDS, CA, 92373. Phone: (909) 793-2500.
What is JOHNNY ARRUDA, M.D.'s NPI number?
JOHNNY ARRUDA, M.D.'s National Provider Identifier (NPI) is 1376590604, issued on 05/30/2006.
Does JOHNNY ARRUDA, M.D. prescribe more brand-name or generic drugs?
JOHNNY ARRUDA, M.D.'s prescribing is 2% brand-name and 98% generic drugs by claim count, with $2K in brand drug costs.
Does JOHNNY ARRUDA, M.D. prescribe opioids?
Yes, JOHNNY ARRUDA, M.D. had 38 opioid claims in 2023 with an opioid prescribing rate of 7.1%.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does JOHNNY ARRUDA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOHNNY ARRUDA, M.D.'s most frequently prescribed drugs include Fluticasone Propionate, Neomycin-Polymyxin-Hydrocort, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHNNY ARRUDA, M.D. accept Medicare?
JOHNNY ARRUDA, M.D. appears in CMS Medicare data with 538 Part D claims and 202 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHNNY ARRUDA, M.D.'s credentials?
JOHNNY ARRUDA, M.D.'s NPI is 1376590604 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