Nucleic Acids Res
Databases, Nucleic AcidGenome-Wide Association StudyInternet
Dr. Richard W. Leslie, MD
NPI1871955856PAC ID9830481852
- Medicare services, 2024
- 531
- Medicare patients, 2024
- 181
- Part D claims, 2024
- 41
- Publications
- 5
- MIPS score, 2024
- 100
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
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Dr. Richard W. Leslie is an internist in Mendon, Massachusetts
Dr. Leslie practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Leslie's NPI, 1871955856, was assigned on March 28, 2016. Dr. Leslie graduated from University of Massachusetts Medical School in 2016. Dr. Leslie holds Massachusetts license 281770.
NPI and contact details
- NPI
- 1871955856NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830481852
- NPI enumeration date
- March 28, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Richard W. Leslie practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Leslie's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Richard W. Leslie is affiliated with 3 sites of care and 1 medical group
Dr. Leslie's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Leslie is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Leslie to 1 more group practice or clinic, named with a free account.
Umass Memorial Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Richard W. Leslie's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leslie practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Richard W. Leslie is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Leslie's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Leslie is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Leslie
Counts of internists 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. Richard W. Leslie billed Medicare for 531 services in 2024
CMS data shows 531 Medicare services from Dr. Leslie across 4 procedure codes in 2024, for 181 Medicare patients. Medicare paid $46,951 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024531
Medicare patients181
Paid by Medicare$46,951
Procedure codes4
Dr. Leslie's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6402024: 53117%
Dr. Leslie compared with the Massachusetts median for internists, 2024
- Dr. Leslie
- Massachusetts median
- Medicare services
- 531vs 43123% above
- Medicare patients
- 181vs 1947% below
- Part D claims
- 14vs 40297% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Leslie'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. Richard W. Leslie treated 181 Medicare patients in 2024, average age 74
CMS counts 181 Medicare patients who saw Dr. Leslie in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 46% are also on Medicaid. Their average risk score is 2.71, 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. Leslie's median patient age at 72, with 40% women.
Medicare patients, 2024181
Average age74
Average risk score2.71
Also on Medicaid46%
Dr. Leslie's Medicare patients by age, 2024
Dr. Leslie's Medicare patients by sex, 2024
- Women8849%
- Men9351%
Chronic conditions among Dr. Leslie's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders57%
- Anxiety56%
- Arthritis53%
- Chronic kidney disease51%
- Depression49%
- Heart failure49%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leslie's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women40%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Richard W. Leslie wrote 41 Medicare Part D claims in 2024
In 2024, Dr. Leslie wrote 41 Medicare Part D claims for 19 patients. 83% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $71 in total drug cost. In 2018, CMS named 87 claims across 4 drugs.
Part D claims, 202441
Drugs named by CMS1
Total drug cost$71
Part D patients19
Dr. Leslie's Part D claims by kind of drug, 2024
- Generic34 claims83%
- Brand-name and other7 claims17%
Dr. Leslie's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 872019: 1484%
Drugs named by CMS: 1 in 2019, 4 in 2018.
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. Richard W. Leslie scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Leslie for performance year 2024, reported through an alternative payment model (APM). Dr. Leslie accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Leslie's MIPS scores, performance year 2024
- 100of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Richard W. Leslie has 5 publications on record
Dmand AI links 5 papers to Dr. Leslie, published from 2011 to 2014. The most frequent topics are Genome-Wide Association Study, Phenotype and Polymorphism, Single Nucleotide. Dr. Leslie's most frequent co-authors are David R. Cave, MD, Samuel Y. Han, MD and Daniel A . Kaufman, MD.
Papers5
Years published2011 to 2014
Topics Dr. Leslie writes about most
- Genome-Wide Association Study
- Phenotype
- Polymorphism, Single Nucleotide
Dr. Leslie's most frequent co-authors
Recent publications by Dr. Leslie
PLoS Genet
Genetic Predisposition to DiseaseGenome, HumanGenome-Wide Association Study
Aorta, AbdominalAortic DiseasesCalcinosis
Databases, GeneticGenesGenome-Wide Association Study
J Clin Gastroenterol
Arteriovenous MalformationsCapsule EndoscopyGastrointestinal Hemorrhage
See who Dr. Leslie researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leslie works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Richard W. Leslie graduated from University of Massachusetts Medical School
Dr. Leslie graduated from University of Massachusetts Medical School in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Richard W. Leslie'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Richard W. Leslie
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. Richard W. Leslie's NPI number?
Dr. Richard W. Leslie's NPI number is 1871955856. It was assigned on March 28, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Richard W. Leslie?
Dr. Richard W. Leslie is an internist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Richard W. Leslie practice?
Dr. Leslie practices at 55 North Ave, Mendon, MA 01756. Dr. Leslie's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Leslie to 1 group practice or clinic.
What is Dr. Richard W. Leslie's office phone number?
The practice phone on file for Dr. Leslie is (508) 334-1000.
What is Dr. Richard W. Leslie's medical license number?
Dr. Leslie holds Massachusetts license 281770.
Which hospitals is Dr. Richard W. Leslie affiliated with?
Dr. Leslie is affiliated with UMass Memorial Medical Center - University Campus.
What medical group is Dr. Richard W. Leslie part of?
Dr. Leslie is linked to UMass Memorial Medical Group.
Does Dr. Richard W. Leslie accept Medicare?
Yes. CMS data shows Dr. Leslie billed Medicare for 531 services in 2024, and Dr. Leslie accepts Medicare assignment.
What is Dr. Richard W. Leslie's MIPS score?
Dr. Leslie's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Richard W. Leslie see?
CMS counts 181 Medicare patients who saw Dr. Leslie in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
What services does Dr. Richard W. Leslie bill to Medicare?
In 2024, Dr. Leslie's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Where did Dr. Richard W. Leslie go to medical school?
Dr. Leslie graduated from University of Massachusetts Medical School in 2016.
What drugs does Dr. Richard W. Leslie prescribe most?
In 2019 Medicare Part D data, Dr. Leslie's most prescribed drugs by claims were Clopidogrel.
How long has Dr. Richard W. Leslie been practicing?
Dr. Leslie graduated from medical school in 2016, 10 years ago.
Does Dr. Richard W. Leslie do research?
Dmand AI links 5 publications to Dr. Leslie, published from 2011 to 2014.
Who does Dr. Richard W. Leslie publish with?
Dr. Leslie's most frequent co-authors are David R. Cave, MD (1 shared paper), Samuel Y. Han, MD (1 shared paper) and Daniel A . Kaufman, MD (1 shared paper).
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