Dr. Aaron Justin Small, MD

  • Aiea, HI
  • Gastroenterologist
NPI1407015399PAC ID0446475107
Medicare services, 2024
227
Medicare patients, 2024
138
Part D claims, 2024
342
Publications
9
Hospital affiliations
1
Practice address
98-1079 Moanalua Road, Aiea, HI 96701
Practice phone
Call (808) 486-6000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Pali Momi Medical Center

Hospital · Aiea, Hawaii

See all 6 affiliations

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Dr. Aaron Justin Small is a gastroenterologist in Aiea, Hawaii

Dr. Small practices at Pali Momi Medical Center in Aiea, Hawaii, part of Hawaiʻi Pacific Health.

Dr. Small's NPI, 1407015399, was assigned on June 5, 2008. Dr. Small graduated from Mayo Medical School in 2008. Dr. Small holds Hawaii license MD-18102.

NPI and contact details
Medicare PAC ID
0446475107
NPI enumeration date
June 5, 2008
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(808) 486-6000
Professional email
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Personal email
Get email
Mobile number
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Sex
Male
Estimated age
44
Medical school graduation
2008

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Aaron Justin Small practices at Pali Momi Medical Center in Aiea, Hawaii

Dr. Small's primary practice is Pali Momi Medical Center, at 98-1079 Moanalua Road, Aiea, HI 96701 in Honolulu County. The practice phone is (808) 486-6000.

Source: Dmand AI Affiliation Data

Dr. Aaron Justin Small is affiliated with 4 sites of care and 2 medical groups

Dr. Small's primary practice is Pali Momi Medical Center in Aiea, Hawaii, part of Hawaiʻi Pacific Health. The medical group on file is Hawaii Permanente Medical Group (HPMG). Dmand AI also links Dr. Small to 1 more clinical lab, 1 physician office, 1 group practice or clinic and 1 medical group, each named with a free account.

See all 6 affiliations for Dr. Small

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Aaron Justin Small's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Small practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Pali Momi Medical CenterAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Hawaiʻi Pacific Health and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Aaron Justin Small is one of 76 gastroenterologists in Hawaii

Gastroenterology is Dr. Small's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Small is licensed in Hawaii.

Specialties and state licenses

  • Gastroenterology, HawaiiPrimaryLicense MD-18102 · taxonomy 207RG0100X

Gastroenterologists near Dr. Small

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Aaron Justin Small billed Medicare for 227 services in 2024

CMS data shows 227 Medicare services from Dr. Small across 10 procedure codes in 2024, for 138 Medicare patients. Medicare paid $23,168 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024227
Medicare patients138
Paid by Medicare$23,168
Procedure codes10

Dr. Small's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 1922024: 1892%
Imaging
2023: 482024: 2646%
Office and hospital visits
2023: 02024: 12

Dr. Small compared with the Hawaii median for gastroenterologists, 2024

  • Dr. Small
  • Hawaii median
Medicare services
227vs 30125% below
Medicare patients
138vs 17019% below
Part D claims
279vs 3007% below

Medians across 72 gastroenterologists in Hawaii with Dmand AI profiles that report each measure.

Dr. Small's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Small

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Aaron Justin Small treated 138 Medicare patients in 2024, average age 77

CMS counts 138 Medicare patients who saw Dr. Small in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.66, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Small's median patient age at 66, with 48% women.

Medicare patients, 2024138
Average age77
Average risk score1.66

Dr. Small's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Small's Medicare patients by sex, 2024

  • Women7252%
  • Men6648%

Chronic conditions among Dr. Small's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes50%
  4. Chronic kidney disease45%
  5. Arthritis36%
  6. Ischemic heart disease35%
  7. Cancer24%
  8. Osteoporosis24%

Share of Medicare patients with each condition. A patient can have several.

Dr. Small's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 66

Patient panel by sex, all payers

  • Women48%
  • Men52%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Aaron Justin Small wrote 342 Medicare Part D claims in 2024

In 2024, Dr. Small wrote 342 Medicare Part D claims for 254 patients. 91% of them were for generic drugs. CMS names the drug for 279 of them, across 5 drugs with 11 or more claims each, at $4,038 in total drug cost. In 2023, CMS named 225 claims across 6 drugs.

Part D claims, 2024342
Drugs named by CMS5
Total drug cost$4,038
Part D patients254

Dr. Small's Part D claims by kind of drug, 2024

  • Generic311 claims91%
  • Brand-name31 claims9%

Dr. Small's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Small's Part D claims, 2024

  • Antibiotics17%58 of 342 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 2252024: 27924%

Drugs named by CMS: 5 in 2024, 6 in 2023.

See all prescribing by Dr. Small

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Aaron Justin Small ranks in the 99th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare

Dr. Small accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 590 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Small, more than 99% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Dr. Small ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
99th percentile590 procedures
Colonoscopy
89th percentile152 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Aaron Justin Small has 9 publications on record

Dmand AI links 9 papers to Dr. Small, published from 2013 to 2017. 2014 was the busiest year, with 3. The most frequent topics are Esophageal Neoplasms and Esophageal Stenosis. Dr. Small has published most often in Clin Gastroenterol Hepatol. Dr. Small's most frequent co-authors are Aaron H. Mendelson, MD, Meenakshi Bewtra, MD and Meer Akbar Ali, MD.

Papers9
Years published2013 to 2017

Dr. Small's papers by year, 2013 to 2017

Topics Dr. Small writes about most

  • Esophageal Neoplasms
  • Esophageal Stenosis

Dr. Small's most frequent co-authors

Recent publications by Dr. Small

See all 9 publications and co-authors

See who Dr. Small researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Small works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Aaron Justin Small received $29,959 in industry payments from 2016 to 2025

CMS Open Payments shows 183 general payments to Dr. Small from 26 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 62% of the total. Boston Scientific Corporation paid the most, $24,877.

General payments to Dr. Small by program year, 2016 to 2025

General payments to Dr. Small by kind, 2016 to 2025

$30Kin total
  • Speaker and faculty fees$18,47062%
  • Food and beverage$7,45125%
  • Travel and lodging$4,03813%

Companies that paid Dr. Small the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Small

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Aaron Justin Small graduated from Mayo Medical School

Dr. Small graduated from Mayo Medical School in 2008.

  1. Medical schoolMayo Medical School

Source: Dmand AI Professional Profile Data

Sources for Dr. Aaron Justin Small's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Aaron Justin Small

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Aaron Justin Small's NPI number?

Dr. Aaron Justin Small's NPI number is 1407015399. It was assigned on June 5, 2008, and it is active in the NPI Registry.

What kind of doctor is Dr. Aaron Justin Small?

Dr. Aaron Justin Small is a gastroenterologist in Aiea, Hawaii. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Aaron Justin Small practice?

Dr. Small practices at 98-1079 Moanalua Road, Aiea, HI 96701. Dr. Small's primary practice is Pali Momi Medical Center in Aiea, Hawaii, part of Hawaiʻi Pacific Health. Dmand AI also links Dr. Small to 1 clinical lab, 1 physician office, 1 group practice or clinic and 1 medical group.

What is Dr. Aaron Justin Small's office phone number?

The practice phone on file for Dr. Small is (808) 486-6000.

What is Dr. Aaron Justin Small's medical license number?

Dr. Small holds Hawaii license MD-18102.

Which hospitals is Dr. Aaron Justin Small affiliated with?

Dr. Small practices at Pali Momi Medical Center in Aiea, Hawaii.

What medical group is Dr. Aaron Justin Small part of?

Dr. Small is linked to Hawaii Permanente Medical Group (HPMG). Dmand AI links Dr. Small to 1 more medical group.

Does Dr. Aaron Justin Small accept Medicare?

Yes. CMS data shows Dr. Small billed Medicare for 227 services in 2024, and Dr. Small accepts Medicare assignment.

How many Medicare patients does Dr. Aaron Justin Small see?

CMS counts 138 Medicare patients who saw Dr. Small in 2024, with an average age of 77.

What services does Dr. Aaron Justin Small bill to Medicare?

In 2024, Dr. Small's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and surgery: digestive system (45380).

Show 6 more questionsShow fewer questions

Where did Dr. Aaron Justin Small go to medical school?

Dr. Small graduated from Mayo Medical School in 2008.

What drugs does Dr. Aaron Justin Small prescribe most?

In 2024 Medicare Part D data, Dr. Small's most prescribed drugs by claims were Gavilyte-G, Omeprazole and Peg-3350 And Electrolytes.

Has Dr. Aaron Justin Small received payments from drug or device companies?

CMS Open Payments shows $29,959 in general payments to Dr. Small from 26 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.

How long has Dr. Aaron Justin Small been practicing?

Dr. Small graduated from medical school in 2008, 18 years ago.

Does Dr. Aaron Justin Small do research?

Dmand AI links 9 publications to Dr. Small, published from 2013 to 2017.

Who does Dr. Aaron Justin Small publish with?

Dr. Small's most frequent co-authors are Aaron H. Mendelson, MD (4 shared papers), Meenakshi Bewtra, MD (2 shared papers) and Meer Akbar Ali, MD (1 shared paper).

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