NPI registry status
Active
2026 NPPES data Allergy Physician NPI 1083606156 MD
Verify on CMS → Deanna Ruddell, MD
Allergy Physician in Little Rock, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,019 in Allergy 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
24
Medicare Part D claims · 12 beneficiaries · Allergy Physician avg: 755
Generic prescribing
50%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Deanna Ruddell, MD filed 24 Medicare Part D claims in 2023 as a Allergy Physician in Little Rock, Arkansas, prescribing 50% generic.
- 24
- Part D claims, 2023
- 50%
- 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.
Deanna Ruddell, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
24 0th percentile higher than 0% 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)
Deanna Ruddell, 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 Deanna Ruddell, MD?
Quality data not reportedPrimary specialty
Allergy Physician
Medicare Part D claims
24 97% vs specialty avg
Specialty distribution in Arkansas
How Allergy Physician compares to other specialties among Arkansas 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 Allergy 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).
Deanna Ruddell, MD appears in the CMS NPPES registry as a Allergy Physician provider holding MD credentials at 16101 CANTRELL RD STE 104, Little Rock, AR, 72223, with a listed phone of (501) 425-0322. NPI 1083606156 was issued on 08/16/2005.
Medicare Part D records for calendar year 2023 show 24 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $3K in drug spend, split 50% brand-name and 50% generic by claim count.
Allergy Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 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 | 1083606156 |
|---|---|
| Specialty | Allergy Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/16/2005 |
Brand vs generic prescribing mix · Brand-heavy
Deanna Ruddell, MD - brand share 50.0%
Allergy Physician average
50% brand-name claims vs 50% generic, on 24 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.
24
Total Claims
$3K
Total Drug Cost
12
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 44
- Total Day Supply
- 1,290
- Brand vs Generic
- 50% brand / 50% generic
- Brand Drug Cost
- $3K
- Generic Drug Cost
- $382
Patient Demographics
- Average Patient Age
- 68.6 years
- Avg HCC Risk Score
- 1.31
Allergy Physician Overview
How Deanna Ruddell, MD fits within the Allergy Physician landscape nationally.
1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider
Deanna Ruddell, MD's 24 claims are below the specialty average of 755.
Nearby Allergy Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Ruddell.
Compare Allergy 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 Arkansas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Allergy 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Arkansas
Frequently Asked Questions
What is Deanna Ruddell, MD's specialty? ▼
Deanna Ruddell, MD specializes in Allergy Physician and practices in Little Rock, Arkansas. Credentials: MD.
How much does Deanna Ruddell, MD prescribe under Medicare Part D? ▼
In 2023, Deanna Ruddell, MD wrote 24 Medicare Part D claims totaling $3K in drug costs for 12 beneficiaries.
Where is Deanna Ruddell, MD located? ▼
Deanna Ruddell, MD is located at 16101 CANTRELL RD STE 104, Little Rock, AR, 72223. Phone: (501) 425-0322.
What is Deanna Ruddell, MD's NPI number? ▼
Deanna Ruddell, MD's National Provider Identifier (NPI) is 1083606156, issued on 08/16/2005.
Does Deanna Ruddell, MD prescribe more brand-name or generic drugs? ▼
Deanna Ruddell, MD's prescribing is 50% brand-name and 50% generic drugs by claim count, with $3K in brand drug costs.
How many Allergy Physician providers are there in the US? ▼
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
Does Deanna Ruddell, MD accept Medicare? ▼
Deanna Ruddell, MD appears in CMS Medicare data with 24 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Deanna Ruddell, MD's credentials? ▼
Deanna Ruddell, MD's NPI is 1083606156 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
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.