2026 NPPES data Pediatrics Physician NPI 1164429981 MD
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IROL GRAY, MD

Pediatrics Physician in LITTLE ROCK, Arkansas. 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
6K
Medicare Part D claims · 257 beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

IROL GRAY, MD filed 6,194 Medicare Part D claims in 2023 as a Pediatrics Physician in LITTLE ROCK, Arkansas, prescribing 86% generic.

6K
Part D claims, 2023
86%
generic prescribing
Likely
board-certified (heuristic)

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.

IROL GRAY, MD's Medicare Part D volume vs every U.S. prescriber

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

6,194 Top 5% higher than 95% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 certification likely (heuristic — not verified)

IROL GRAY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about IROL GRAY, MD?

Quality data not reported

NPI registry status

Active

Issued 07/07/2005

NPI 1164429981

Primary specialty

Pediatrics Physician

High-volume

80,574 US NPIs in this specialty

Medicare Part D claims

6,194 713% vs specialty avg

2023 prescription claims

Specialty avg: 762

Specialty distribution in Arkansas

How Pediatrics Physician compares to other specialties among Arkansas providers

Arkansas providers

Pediatrics Physician share within Arkansas

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

Specialty board-certification context

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

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

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

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

IROL GRAY, MD appears in the CMS NPPES registry as a Pediatrics Physician provider holding MD credentials at 500 S UNIVERSITY AVE STE 804, LITTLE ROCK, AR, 72205, with a listed phone of (501) 907-1710. NPI 1164429981 was issued on 07/07/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRAY 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 6,194 prescription claims written by this provider, covering 257 Medicare beneficiaries and totaling roughly $613K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 2.2%. 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.

Pediatrics Physician is a high-volume specialty nationwide, with 80,574 enrolled providers across 56 states and an average of 762 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

500 S UNIVERSITY AVE STE 804
LITTLE ROCK, AR 72205

Provider Details

NPI 1164429981
Specialty Pediatrics Physician
Credentials MD
Gender Male
NPI Issued 07/07/2005

Hospital and facility affiliations

Facilities where IROL GRAY, MD 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.

ARKANSAS FAMILY CARE NETWORK
LITTLE ROCK, AR

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

Brand vs generic prescribing mix · Typical

IROL GRAY, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 6,194 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.

6,194
Total Claims
$613K
Total Drug Cost
257
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,696
Total Day Supply
300,412
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$491K
Generic Drug Cost
$120K
Opioid Claims
135 (2.2% rate)
Antibiotic Claims
394

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
0.95
Gender Split
56% female / 44% male

Top Prescribed Drugs (Medicare Part D)

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

What IROL GRAY, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Rosuvastatin Calcium
331
Levothyroxine Sodium
215
Amlodipine Besylate
168
Gabapentin
145
Pantoprazole Sodium
125
Hydrochlorothiazide
121
Losartan Potassium
120
Meloxicam
116
Omeprazole
115
Methylprednisolone
110

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

Pediatrics Physician Overview

How IROL GRAY, MD fits within the Pediatrics Physician landscape nationally.

80,574
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider

IROL GRAY, MD's 6,194 claims are above the specialty average of 762.

Nearby Pediatrics Physician Providers in Arkansas

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

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

Frequently Asked Questions

What is IROL GRAY, MD's specialty?
IROL GRAY, MD specializes in Pediatrics Physician and practices in LITTLE ROCK, Arkansas. Credentials: MD.
How much does IROL GRAY, MD prescribe under Medicare Part D?
In 2023, IROL GRAY, MD wrote 6,194 Medicare Part D claims totaling $613K in drug costs for 257 beneficiaries.
Where is IROL GRAY, MD located?
IROL GRAY, MD is located at 500 S UNIVERSITY AVE STE 804, LITTLE ROCK, AR, 72205. Phone: (501) 907-1710.
What is IROL GRAY, MD's NPI number?
IROL GRAY, MD's National Provider Identifier (NPI) is 1164429981, issued on 07/07/2005.
Does IROL GRAY, MD prescribe more brand-name or generic drugs?
IROL GRAY, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $491K in brand drug costs.
Does IROL GRAY, MD prescribe opioids?
Yes, IROL GRAY, MD had 135 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
How many Pediatrics Physician providers are there in the US?
There are 80,574 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does IROL GRAY, MD prescribe most often?
Based on 2023 Medicare Part D data, IROL GRAY, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does IROL GRAY, MD accept Medicare?
IROL GRAY, MD appears in CMS Medicare data with 6,194 Part D claims and 257 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify IROL GRAY, MD's credentials?
IROL GRAY, MD's NPI is 1164429981 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