Dr. William J. Assante, MD
- Medicare services, 2020
- 457
- Part D claims, 2024
- 16
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $581
- Practice address
- 100 Woods Rd, Valhalla, NY 10595
- Practice phone
- Call (914) 493-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. William J. Assante is an internist in Valhalla, New York
Dr. Assante practices at Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network.
Dr. Assante's NPI, 1629179379, was assigned on September 26, 2006. Dr. Assante graduated from Universidad del Noreste in 1986. Dr. Assante holds New York license 185848.
- NPI
- 1629179379NPI Registry (opens in a new tab)
- NPI enumeration date
- September 26, 2006
- NPI status
- Active
- Practice phone
- (914) 493-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William J. Assante practices at Westchester Medical Center in Valhalla, New York
Dr. Assante's primary practice is Westchester Medical Center, at 100 Woods Rd, Valhalla, NY 10595 in Westchester County. The practice phone is (914) 493-7000.
- Westchester Medical Center100 Woods Rd, Valhalla, NY 10595 · Westchester CountyPhone(914) 493-7000
Source: Dmand AI Affiliation Data
Dr. William J. Assante is affiliated with 2 sites of care and 1 medical group
Dr. Assante's primary practice is Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network. The medical group on file is The Westchester Medical Practice. Dmand AI also links Dr. Assante to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William J. Assante's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Assante practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Westchester Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Westchester Medical Center Health Network and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William J. Assante is one of 9,643 internists in New York
Internal medicine is Dr. Assante's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Assante is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Assante
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. William J. Assante billed Medicare for 457 services in 2020
CMS data shows 457 Medicare services from Dr. Assante across 2 procedure codes in 2020. Medicare paid $30,809 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Assante's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 6452020: 45729%
Dr. Assante compared with the New York median for internists, 2020
- Dr. Assante
- New York median
- Medicare services
- 457vs 4267% above
- Part D claims
- 232vs 62263% below
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Assante's most billed Medicare procedure codes, 2020
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. William J. Assante's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Assante's median patient age at 68, with 57% women.
Dr. Assante's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. William J. Assante wrote 16 Medicare Part D claims in 2024
In 2024, Dr. Assante wrote 16 Medicare Part D claims. 100% of them were for generic drugs. They cover 14 drugs, with $14,092 in total drug cost. In 2020, CMS named 596 claims across 27 drugs.
Dr. Assante's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 5962021: 23261%
Drugs named by CMS: 14 in 2021, 27 in 2020.
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
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Dr. William J. Assante has 2 publications on record
Dmand AI links 2 papers to Dr. Assante in 2025. Dr. Assante's most frequent co-authors are Suhaib Ahmad Andrabi, MBBS and Asim Ahmed Kichloo, MD.
Dr. Assante's most frequent co-authors
- Suhaib Ahmad Andrabi, MBBS1 shared paper
- Asim Ahmed Kichloo, MD1 shared paper
Recent publications by Dr. Assante
Medicine (Baltimore)
See who Dr. Assante researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Assante 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. William J. Assante received $581 in industry payments from 2016 to 2025
CMS Open Payments shows 7 general payments to Dr. Assante from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 77% of the total. Amgen Inc. paid the most, $384.
General payments to Dr. Assante by program year, 2016 to 2025
General payments to Dr. Assante by kind, 2016 to 2025
- Food and beverage$44577%
- Education$13523%
Companies that paid Dr. Assante 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. William J. Assante graduated from Universidad del Noreste
Dr. Assante graduated from Universidad del Noreste in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William J. Assante'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 Data |
| 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) |
| 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. William J. Assante
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. William J. Assante's NPI number?
Dr. William J. Assante's NPI number is 1629179379. It was assigned on September 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William J. Assante?
Dr. William J. Assante is an internist in Valhalla, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William J. Assante practice?
Dr. Assante practices at 100 Woods Rd, Valhalla, NY 10595. Dr. Assante's primary practice is Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network. Dmand AI also links Dr. Assante to 1 group practice or clinic.
What is Dr. William J. Assante's office phone number?
The practice phone on file for Dr. Assante is (914) 493-7000.
What is Dr. William J. Assante's medical license number?
Dr. Assante holds New York license 185848.
Which hospitals is Dr. William J. Assante affiliated with?
Dr. Assante practices at Westchester Medical Center in Valhalla, New York.
What medical group is Dr. William J. Assante part of?
Dr. Assante is linked to The Westchester Medical Practice.
Does Dr. William J. Assante accept Medicare?
Yes. CMS data shows Dr. Assante billed Medicare for 457 services in 2020.
What services does Dr. William J. Assante bill to Medicare?
In 2020, Dr. Assante's most billed Medicare services were nursing facility care (99308) and nursing facility care (99305).
Where did Dr. William J. Assante go to medical school?
Dr. Assante graduated from Universidad del Noreste in 1986.
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What drugs does Dr. William J. Assante prescribe most?
In 2021 Medicare Part D data, Dr. Assante's most prescribed drugs by claims were Levothyroxine Sodium, Amlodipine Besylate and Atorvastatin Calcium.
Has Dr. William J. Assante received payments from drug or device companies?
CMS Open Payments shows $581 in general payments to Dr. Assante from 5 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. William J. Assante been practicing?
Dr. Assante graduated from medical school in 1986, 40 years ago.
Does Dr. William J. Assante do research?
Dmand AI links 2 publications to Dr. Assante.
Who does Dr. William J. Assante publish with?
Dr. Assante's most frequent co-authors are Suhaib Ahmad Andrabi, MBBS (1 shared paper) and Asim Ahmed Kichloo, MD (1 shared paper).
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