Dr. Justin Adam Horwitz, DO
- Medicare services, 2024
- 346
- Medicare patients, 2024
- 190
- Part D claims, 2024
- 903
- MIPS score, 2024
- 84
- Hospital affiliations
- 3
- Practice address
- 1900 North Higley Road, Gilbert, AZ 85234
- Practice phone
- Call (480) 543-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Horwitz's professional email, personal email and mobile number
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Dr. Justin Adam Horwitz is a gastroenterologist in Gilbert, Arizona
Dr. Horwitz practices at Banner Gateway Medical Center in Gilbert, Arizona, part of Banner Health.
Dr. Horwitz's NPI, 1528201670, was assigned on April 18, 2009. Dr. Horwitz graduated from Lake Erie College of Osteopathic Medicine, Erie in 2009. Dr. Horwitz holds Arizona license 008589.
- NPI
- 1528201670NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274707476
- NPI enumeration date
- April 18, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 543-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Justin Adam Horwitz practices at Banner Gateway Medical Center in Gilbert, Arizona
Dr. Horwitz's primary practice is Banner Gateway Medical Center, at 1900 North Higley Road, Gilbert, AZ 85234 in Maricopa County. The practice phone is (480) 543-2000.
- Banner Gateway Medical Center1900 North Higley Road, Gilbert, AZ 85234 · Maricopa CountyPhone(480) 543-2000
Source: Dmand AI Affiliation Data
Dr. Justin Adam Horwitz is affiliated with 4 sites of care and 2 medical groups
Dr. Horwitz's primary practice is Banner Gateway Medical Center in Gilbert, Arizona, part of Banner Health. Dr. Horwitz is also affiliated with Banner Desert Medical Center. The medical group on file is Banner Medical Group. Dmand AI also links Dr. Horwitz to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Justin Adam Horwitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horwitz practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Banner Gateway Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justin Adam Horwitz is one of 380 gastroenterologists in Arizona
Gastroenterology is Dr. Horwitz's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Horwitz's licenses on file in 3 states: Arizona, Indiana and South Carolina.
Specialties and state licenses
- Gastroenterology, ArizonaPrimary
- Indiana license
- South Carolina license
Gastroenterologists near Dr. Horwitz
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. Justin Adam Horwitz billed Medicare for 346 services in 2024
CMS data shows 346 Medicare services from Dr. Horwitz across 7 procedure codes in 2024, for 190 Medicare patients. Medicare paid $34,189 for them.
Dr. Horwitz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2072024: 2101%
- Office and hospital visits
- 2023: 1442024: 1366%
Where Dr. Horwitz's Medicare services took place, 2024
- In an office13639%
- In a facility21061%
Dr. Horwitz compared with the Arizona median for gastroenterologists, 2024
- Dr. Horwitz
- Arizona median
- Medicare services
- 346vs 50832% below
- Medicare patients
- 190vs 31940% below
- Part D claims
- 741vs 3102.4 times
Medians across 369 gastroenterologists in Arizona with Dmand AI profiles that report each measure.
Dr. Horwitz'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Justin Adam Horwitz treated 190 Medicare patients in 2024, average age 70
CMS counts 190 Medicare patients who saw Dr. Horwitz in 2024. The largest group is 65 to 74, with 125 patients. 75% of them have high cholesterol, and 66% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Horwitz's median patient age at 60, with 55% women.
Dr. Horwitz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Horwitz's Medicare patients by sex, 2024
- Women11359%
- Men7741%
Chronic conditions among Dr. Horwitz's Medicare patients, 2024
- High cholesterol75%
- High blood pressure66%
- Arthritis47%
- Mood disorders25%
- Anxiety23%
- Depression23%
- Diabetes20%
- Chronic kidney disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Horwitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justin Adam Horwitz wrote 903 Medicare Part D claims in 2024
In 2024, Dr. Horwitz wrote 903 Medicare Part D claims for 331 patients. 79% of them were for generic drugs. CMS names the drug for 741 of them, across 16 drugs with 11 or more claims each, at $164,537 in total drug cost. In 2023, CMS named 637 claims across 15 drugs.
Dr. Horwitz's Part D claims by kind of drug, 2024
- Generic717 claims79%
- Brand-name186 claims21%
Dr. Horwitz'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. Horwitz's Part D claims, 2024
- Antibiotics4%36 of 903 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: 6372024: 74116%
Drugs named by CMS: 16 in 2024, 15 in 2023.
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. Justin Adam Horwitz scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Horwitz for performance year 2024, reported as part of a group. Dr. Horwitz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 109 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Horwitz, more than 78% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Horwitz's MIPS scores, performance year 2024
- 84of 100Final score
- 76.3of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Horwitz ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 78th percentile109 procedures
- Colonoscopy
- 67th percentile58 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Justin Adam Horwitz received $3,526 in industry payments from 2016 to 2025
CMS Open Payments shows 112 general payments to Dr. Horwitz from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $862.
General payments to Dr. Horwitz by program year, 2016 to 2025
Companies that paid Dr. Horwitz the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Justin Adam Horwitz graduated from Lake Erie College of Osteopathic Medicine, Erie
Dr. Horwitz graduated from Lake Erie College of Osteopathic Medicine, Erie in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Justin Adam Horwitz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Justin Adam Horwitz
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. Justin Adam Horwitz's NPI number?
Dr. Justin Adam Horwitz's NPI number is 1528201670. It was assigned on April 18, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Justin Adam Horwitz?
Dr. Justin Adam Horwitz is a gastroenterologist in Gilbert, Arizona. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Justin Adam Horwitz practice?
Dr. Horwitz practices at 1900 North Higley Road, Gilbert, AZ 85234. Dr. Horwitz's primary practice is Banner Gateway Medical Center in Gilbert, Arizona, part of Banner Health. Dmand AI also links Dr. Horwitz to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Justin Adam Horwitz's office phone number?
The practice phone on file for Dr. Horwitz is (480) 543-2000.
What is Dr. Justin Adam Horwitz's medical license number?
Dr. Horwitz holds Arizona license 008589, one of the licenses on file in 3 states.
Which states has Dr. Justin Adam Horwitz been licensed in?
Dmand AI has state licenses on file for Dr. Horwitz in Arizona, Indiana and South Carolina.
Which hospitals is Dr. Justin Adam Horwitz affiliated with?
Dr. Horwitz practices at Banner Gateway Medical Center in Gilbert, Arizona. Dr. Horwitz is also affiliated with Banner Desert Medical Center. Dmand AI links Dr. Horwitz to 1 more hospital.
What medical group is Dr. Justin Adam Horwitz part of?
Dr. Horwitz is linked to Banner Medical Group. Dmand AI links Dr. Horwitz to 1 more medical group.
Does Dr. Justin Adam Horwitz accept Medicare?
Yes. CMS data shows Dr. Horwitz billed Medicare for 346 services in 2024, and Dr. Horwitz accepts Medicare assignment.
What is Dr. Justin Adam Horwitz's MIPS score?
Dr. Horwitz's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Justin Adam Horwitz see?
CMS counts 190 Medicare patients who saw Dr. Horwitz in 2024, with an average age of 70.
What services does Dr. Justin Adam Horwitz bill to Medicare?
In 2024, Dr. Horwitz's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (43239) and office visit, established patient (99214).
Where did Dr. Justin Adam Horwitz go to medical school?
Dr. Horwitz graduated from Lake Erie College of Osteopathic Medicine, Erie in 2009.
What drugs does Dr. Justin Adam Horwitz prescribe most?
In 2024 Medicare Part D data, Dr. Horwitz's most prescribed drugs by claims were Famotidine, Pantoprazole Sodium and Gavilyte-G.
Has Dr. Justin Adam Horwitz received payments from drug or device companies?
CMS Open Payments shows $3,526 in general payments to Dr. Horwitz from 24 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Justin Adam Horwitz been practicing?
Dr. Horwitz graduated from medical school in 2009, 17 years ago.
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