Bariatric SurgeryCOVID-19Obesity, Morbid
Dr. David Alexander Leenen, MD
NPI1407386931PAC ID1052680964
- Medicare services, 2024
- 140
- Medicare patients, 2024
- 108
- Part D claims, 2024
- 54
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 88 Washington Street, Taunton, MA 02780
- Practice phone
- Call (508) 828-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leenen's professional email, personal email and mobile number
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Dr. David Alexander Leenen is a general surgeon in Taunton, Massachusetts
Dr. Leenen practices at Morton Hospital in Taunton, Massachusetts, part of Brown University Health.
Dr. Leenen's NPI, 1407386931, was assigned on June 18, 2017. Dr. Leenen graduated from Saint Louis University School of Medicine in 2017. Dr. Leenen holds Rhode Island license LP03933.
NPI and contact details
- NPI
- 1407386931NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052680964
- NPI enumeration date
- June 18, 2017
- NPI status
- Active
- Practice phone
- (508) 828-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. David Alexander Leenen practices at Morton Hospital in Taunton, Massachusetts
Dr. Leenen's primary practice is Morton Hospital, at 88 Washington Street, Taunton, MA 02780 in Bristol County. The practice phone is (508) 828-7000.
- Morton Hospital88 Washington Street, Taunton, MA 02780 · Bristol CountyPhone(508) 828-7000
Source: Dmand AI Affiliation Data
Dr. David Alexander Leenen is affiliated with 2 sites of care and 2 medical groups
Dr. Leenen's primary practice is Morton Hospital in Taunton, Massachusetts, part of Brown University Health. Dr. Leenen is also affiliated with Rhode Island Hospital. The medical group on file is Brown Health Medical Group. Dmand AI also links Dr. Leenen to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Alexander Leenen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leenen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Morton Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Alexander Leenen is one of 732 general surgeons in Massachusetts
Surgery is Dr. Leenen's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Leenen is licensed in Rhode Island.
Specialties and state licenses
- Surgery, Rhode IslandPrimary
General surgeons near Dr. Leenen
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
732general surgeons in Massachusetts
2general surgeons in Taunton
2general surgeons at Morton HospitalSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David Alexander Leenen billed Medicare for 140 services in 2024
CMS data shows 140 Medicare services from Dr. Leenen across 8 procedure codes in 2024, for 108 Medicare patients. Medicare paid $10,475 for them.
Medicare services, 2024140
Medicare patients108
Paid by Medicare$10,475
Procedure codes8
Dr. Leenen's Medicare services by type, 2024
- Office and hospital visits125
- Surgery15
Where Dr. Leenen's Medicare services took place, 2024
- In an office11280%
- In a facility2820%
Dr. Leenen compared with the Massachusetts median for general surgeons, 2024
- Dr. Leenen
- Massachusetts median
- Medicare services
- 140vs 20030% below
- Medicare patients
- 108vs 15229% below
- Part D claims
- 14vs 2236% below
Medians across 688 general surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Leenen'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leenen and other general surgeons in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Alexander Leenen treated 108 Medicare patients in 2024, average age 71
CMS counts 108 Medicare patients who saw Dr. Leenen in 2024. The largest group is 65 to 74, with 34 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 49% are also on Medicaid. Their average risk score is 1.58, 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. Leenen's median patient age at 61, with 57% women.
Medicare patients, 2024108
Average age71
Average risk score1.58
Also on Medicaid49%
Dr. Leenen's Medicare patients by age, 2024
Dr. Leenen's Medicare patients by sex, 2024
- Women5450%
- Men5450%
Chronic conditions among Dr. Leenen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Anxiety43%
- Diabetes39%
- Mood disorders38%
- Chronic kidney disease33%
- Depression32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leenen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Alexander Leenen wrote 54 Medicare Part D claims in 2024
In 2024, Dr. Leenen wrote 54 Medicare Part D claims for 30 patients. 89% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $55 in total drug cost. In 2023, CMS named 56 claims across 3 drugs.
Part D claims, 202454
Drugs named by CMS1
Total drug cost$55
Part D patients30
Dr. Leenen's Part D claims by kind of drug, 2024
- Generic48 claims89%
- Brand-name and other6 claims11%
Dr. Leenen'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. Leenen's Part D claims, 2024
- Opioids28%15 of 54 claims
- Antibiotics20%11 of 54 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: 562024: 1475%
Drugs named by CMS: 1 in 2024, 3 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 Alexander Leenen ranks in the 58th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
CMS counts 36 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Leenen, more than 58% of the clinicians it reports for that procedure.
Where Dr. Leenen ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 58th percentile36 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. David Alexander Leenen has 1 publication on record
Dmand AI links 1 paper to Dr. Leenen in 2021. Dr. Leenen's most frequent co-authors are Beth Ann Ryder, MD, Mia Shapiro, MD and Todd S. Stafford, MD.
Papers1
Dr. Leenen's most frequent co-authors
Recent publications by Dr. Leenen
See who Dr. Leenen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leenen works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Alexander Leenen received $4,181 in industry payments from 2022 to 2025
CMS Open Payments shows 37 general payments to Dr. Leenen from 10 drug and device companies from 2022 to 2025. Travel and lodging make up the largest share, 54% of the total. Boston Scientific Corporation paid the most, $2,517.
General payments to Dr. Leenen by program year, 2022 to 2025
General payments to Dr. Leenen by kind, 2022 to 2025
$4.2Kin total
- Travel and lodging$2,23954%
- Food and beverage$1,94246%
Companies that paid Dr. Leenen the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Alexander Leenen graduated from Saint Louis University School of Medicine
Dr. Leenen graduated from Saint Louis University School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Alexander Leenen'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 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) |
| 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. David Alexander Leenen
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 Alexander Leenen's NPI number?
Dr. David Alexander Leenen's NPI number is 1407386931. It was assigned on June 18, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. David Alexander Leenen?
Dr. David Alexander Leenen is a general surgeon in Taunton, Massachusetts. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. David Alexander Leenen practice?
Dr. Leenen practices at 88 Washington Street, Taunton, MA 02780. Dr. Leenen's primary practice is Morton Hospital in Taunton, Massachusetts, part of Brown University Health. Dmand AI also links Dr. Leenen to 1 medical group.
What is Dr. David Alexander Leenen's office phone number?
The practice phone on file for Dr. Leenen is (508) 828-7000.
What is Dr. David Alexander Leenen's medical license number?
Dr. Leenen holds Rhode Island license LP03933.
Which hospitals is Dr. David Alexander Leenen affiliated with?
Dr. Leenen practices at Morton Hospital in Taunton, Massachusetts. Dr. Leenen is also affiliated with Rhode Island Hospital.
What medical group is Dr. David Alexander Leenen part of?
Dr. Leenen is linked to Brown Health Medical Group. Dmand AI links Dr. Leenen to 1 more medical group.
Does Dr. David Alexander Leenen accept Medicare?
Yes. CMS data shows Dr. Leenen billed Medicare for 140 services in 2024.
How many Medicare patients does Dr. David Alexander Leenen see?
CMS counts 108 Medicare patients who saw Dr. Leenen in 2024, with an average age of 71.
What services does Dr. David Alexander Leenen bill to Medicare?
In 2024, Dr. Leenen's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and surgery: digestive system (43239).
Show 6 more questionsShow fewer questions
Where did Dr. David Alexander Leenen go to medical school?
Dr. Leenen graduated from Saint Louis University School of Medicine in 2017.
What drugs does Dr. David Alexander Leenen prescribe most?
In 2024 Medicare Part D data, Dr. Leenen's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. David Alexander Leenen received payments from drug or device companies?
CMS Open Payments shows $4,181 in general payments to Dr. Leenen from 10 companies from 2022 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. David Alexander Leenen been practicing?
Dr. Leenen graduated from medical school in 2017, 9 years ago.
Does Dr. David Alexander Leenen do research?
Dmand AI links 1 publication to Dr. Leenen.
Who does Dr. David Alexander Leenen publish with?
Dr. Leenen's most frequent co-authors are Beth Ann Ryder, MD (1 shared paper), Mia Shapiro, MD (1 shared paper) and Todd S. Stafford, MD (1 shared paper).
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