BMC Anesthesiol
Anesthetics, IntravenousInjections, IntravenousPain
Dr. David B. Leff, DO
NPI1619956505PAC ID8729037957
- Medicare services, 2024
- 771
- Medicare patients, 2024
- 438
- Part D claims, 2024
- 1,235
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 8761 East Bell Road, Suite 101, Scottsdale, AZ 85260
- Practice phone
- Call (480) 419-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arizona Digestive Center
Surgery Center - Medicare-Certified · Scottsdale, Arizona
Find Dr. Leff's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David B. Leff is a gastroenterologist in Scottsdale, Arizona
Dr. Leff practices at Arizona Digestive Center in Scottsdale, Arizona.
Dr. Leff's NPI, 1619956505, was assigned on January 10, 2006. Dr. Leff holds Arizona license 3220.
NPI and contact details
- NPI
- 1619956505NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729037957
- NPI enumeration date
- January 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 419-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David B. Leff practices at Arizona Digestive Center in Scottsdale, Arizona
Dr. Leff's primary practice is Arizona Digestive Center, at 8761 East Bell Road, Suite 101, Scottsdale, AZ 85260. The practice phone is (480) 419-7500.
- Arizona Digestive Center8761 East Bell Road, Suite 101, Scottsdale, AZ 85260Phone(480) 419-7500
Source: Dmand AI Affiliation Data
Dr. David B. Leff is affiliated with 4 sites of care and 2 medical groups
Dr. Leff's primary practice is Arizona Digestive Center in Scottsdale, Arizona. Dr. Leff is also affiliated with Banner Gateway Medical Center. The medical group on file is Arizona Gastrointestinal Associates. Dmand AI also links Dr. Leff to 2 more group practices and clinics and 1 medical group, each named with a free account.
Arizona Digestive CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David B. Leff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leff practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arizona Digestive 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. David B. Leff is one of 380 gastroenterologists in Arizona
Gastroenterology is Dr. Leff's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Leff is licensed in Arizona.
Specialties and state licenses
- Gastroenterology, ArizonaPrimary
Gastroenterologists near Dr. Leff
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. David B. Leff billed Medicare for 771 services in 2024
CMS data shows 771 Medicare services from Dr. Leff across 11 procedure codes in 2024, for 438 Medicare patients. Medicare paid $84,330 for them.
Medicare services, 2024771
Medicare patients438
Paid by Medicare$84,330
Procedure codes11
Dr. Leff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6052024: 54310%
- Surgery
- 2023: 1662024: 1641%
- Other services
- 2023: 192024: 64237%
- Tests and treatments
- 2023: 172024: 0100%
Where Dr. Leff's Medicare services took place, 2024
- In an office51367%
- In a facility25833%
Dr. Leff compared with the Arizona median for gastroenterologists, 2024
- Dr. Leff
- Arizona median
- Medicare services
- 771vs 50852% above
- Medicare patients
- 438vs 31937% above
- Part D claims
- 1,073vs 3103.5 times
Medians across 369 gastroenterologists in Arizona with Dmand AI profiles that report each measure.
Dr. Leff'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.
Need commercial claims for Dr. Leff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leff and other gastroenterologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David B. Leff treated 438 Medicare patients in 2024, average age 73
CMS counts 438 Medicare patients who saw Dr. Leff in 2024. The largest group is 65 to 74, with 245 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leff's median patient age at 65, with 53% women.
Medicare patients, 2024438
Average age73
Average risk score1.22
Also on Medicaid5%
Dr. Leff's Medicare patients by age, 2024
Dr. Leff's Medicare patients by sex, 2024
- Women21850%
- Men22050%
Chronic conditions among Dr. Leff's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease35%
- Chronic kidney disease29%
- Diabetes28%
- Mood disorders26%
- Depression24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David B. Leff wrote 1,235 Medicare Part D claims in 2024
In 2024, Dr. Leff wrote 1,235 Medicare Part D claims for 487 patients. 70% of them were for generic drugs. CMS names the drug for 1,073 of them, across 23 drugs with 11 or more claims each, at $526,156 in total drug cost. In 2023, CMS named 937 claims across 21 drugs.
Part D claims, 20241,235
Drugs named by CMS23
Total drug cost$526,156
Part D patients487
Dr. Leff's Part D claims by kind of drug, 2024
- Generic870 claims70%
- Brand-name365 claims30%
Dr. Leff'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. Leff's Part D claims, 2024
- Antibiotics2%28 of 1,235 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: 9372024: 1,07315%
Drugs named by CMS: 23 in 2024, 21 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. David B. Leff ranks in the 80th percentile for colonoscopy in Medicare
Dr. Leff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 103 procedures of colonoscopy by Dr. Leff, more than 80% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Leff ranks in Medicare procedure volume
- Colonoscopy
- 80th percentile103 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 56th percentile32 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. David B. Leff has 1 publication on record
Dmand AI links 1 paper to Dr. Leff in 2024. Dr. Leff's most frequent co-author is Keng-Yu Chuang, MD.
Papers1
Dr. Leff's most frequent co-authors
Recent publications by Dr. Leff
See who Dr. Leff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leff works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David B. Leff received $692,398 in industry payments from 2016 to 2025
CMS Open Payments shows 2,240 general payments to Dr. Leff from 74 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 64% of the total. Abbvie Inc. paid the most, $209,358.
General payments to Dr. Leff by program year, 2016 to 2025
General payments to Dr. Leff by kind, 2016 to 2025
$692.4Kin total
- Speaker and faculty fees$438,99764%
- Education speaker fees$111,05016%
- Travel and lodging$73,56811%
- Food and beverage$54,5718%
- Other$11,4782%
Companies that paid Dr. Leff the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David B. Leff'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. David B. Leff
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. David B. Leff's NPI number?
Dr. David B. Leff's NPI number is 1619956505. It was assigned on January 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David B. Leff?
Dr. David B. Leff is a gastroenterologist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. David B. Leff practice?
Dr. Leff practices at 8761 East Bell Road, Suite 101, Scottsdale, AZ 85260. Dr. Leff's primary practice is Arizona Digestive Center in Scottsdale, Arizona. Dmand AI also links Dr. Leff to 2 group practices and clinics and 1 medical group.
What is Dr. David B. Leff's office phone number?
The practice phone on file for Dr. Leff is (480) 419-7500.
What is Dr. David B. Leff's medical license number?
Dr. Leff holds Arizona license 3220.
Which hospitals is Dr. David B. Leff affiliated with?
Dr. Leff is affiliated with Banner Gateway Medical Center.
What medical group is Dr. David B. Leff part of?
Dr. Leff is linked to Arizona Gastrointestinal Associates. Dmand AI links Dr. Leff to 1 more medical group.
Does Dr. David B. Leff accept Medicare?
Yes. CMS data shows Dr. Leff billed Medicare for 771 services in 2024, and Dr. Leff accepts Medicare assignment.
How many Medicare patients does Dr. David B. Leff see?
CMS counts 438 Medicare patients who saw Dr. Leff in 2024, with an average age of 73.
What services does Dr. David B. Leff bill to Medicare?
In 2024, Dr. Leff's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and surgery: digestive system (45385).
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What drugs does Dr. David B. Leff prescribe most?
In 2024 Medicare Part D data, Dr. Leff's most prescribed drugs by claims were Pantoprazole Sodium, Sod Sulf-Potass Sulf-Mag Sulf and Linzess.
Has Dr. David B. Leff received payments from drug or device companies?
CMS Open Payments shows $692,398 in general payments to Dr. Leff from 74 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. David B. Leff been practicing?
Dr. Leff graduated from medical school in 1991, 35 years ago.
Does Dr. David B. Leff do research?
Dmand AI links 1 publication to Dr. Leff.
Who does Dr. David B. Leff publish with?
Dr. Leff's most frequent co-authors are Keng-Yu Chuang, MD (1 shared paper).
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