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Dr. Mark William Vanderland, MD
NPI1427610237
- Part D claims, 2024
- 134
- Publications
- 2
- Industry payments
- $5,936
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 501 W 14th St, Wilmington, DE 19801
- Practice phone
- Call (302) 733-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wilmington Hospital
Wilmington, Delaware
Find Dr. Vanderland'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. Mark William Vanderland is an internist in Wilmington, Delaware
Dr. Vanderland practices at Wilmington Hospital in Wilmington, Delaware.
Dr. Vanderland's NPI, 1427610237, was assigned on July 1, 2019. Dr. Vanderland holds Pennsylvania license MT219154.
NPI and contact details
- NPI
- 1427610237NPI Registry (opens in a new tab)
- NPI enumeration date
- July 1, 2019
- NPI status
- Active
- Practice phone
- (302) 733-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark William Vanderland practices at Wilmington Hospital in Wilmington, Delaware
Dr. Vanderland's primary practice is Wilmington Hospital, at 501 W 14th St, Wilmington, DE 19801 in New Castle County. The practice phone is (302) 733-1000.
- Wilmington Hospital501 W 14th St, Wilmington, DE 19801 · New Castle CountyPhone(302) 733-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark William Vanderland is affiliated with 1 site of care
Dr. Vanderland's primary practice is Wilmington Hospital in Wilmington, Delaware.
Wilmington HospitalPrimary
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Mark William Vanderland's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vanderland practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wilmington Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark William Vanderland is one of 615 internists in Delaware
Internal medicine is Dr. Vanderland's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Vanderland is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Vanderland
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. Mark William Vanderland's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Vanderland's median patient age at 68, with 42% women.
Dr. Vanderland'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
- Women42%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. Mark William Vanderland wrote 134 Medicare Part D claims in 2024
In 2024, Dr. Vanderland wrote 134 Medicare Part D claims for 31 patients. 91% of them were for generic drugs. CMS names the drug for 72 of them, across 4 drugs with 11 or more claims each, at $1,237 in total drug cost. In 2023, CMS named 48 claims across 3 drugs.
Part D claims, 2024134
Drugs named by CMS4
Total drug cost$1,237
Part D patients31
Dr. Vanderland's Part D claims by kind of drug, 2024
- Generic122 claims91%
- Brand-name12 claims9%
Dr. Vanderland'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 482024: 7250%
Drugs named by CMS: 4 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
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Dr. Mark William Vanderland has 2 publications on record
Dmand AI links 2 papers to Dr. Vanderland, published from 2020 to 2021.
Papers2
Years published2020 to 2021
Recent publications by Dr. Vanderland
See who Dr. Vanderland researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Vanderland 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. Mark William Vanderland received $5,936 in industry payments from 2019 to 2025
CMS Open Payments shows 126 general payments to Dr. Vanderland from 30 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 96% of the total. AstraZeneca Pharmaceuticals LP paid the most, $997.
General payments to Dr. Vanderland by program year, 2019 to 2025
General payments to Dr. Vanderland by kind, 2019 to 2025
$5.9Kin total
- Food and beverage$5,70296%
- Education$2344%
Companies that paid Dr. Vanderland the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark William Vanderland'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 Data |
| 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) |
| 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. Mark William Vanderland
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. Mark William Vanderland's NPI number?
Dr. Mark William Vanderland's NPI number is 1427610237. It was assigned on July 1, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark William Vanderland?
Dr. Mark William Vanderland is an internist in Wilmington, Delaware. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark William Vanderland practice?
Dr. Vanderland practices at 501 W 14th St, Wilmington, DE 19801. Dr. Vanderland's primary practice is Wilmington Hospital in Wilmington, Delaware.
What is Dr. Mark William Vanderland's office phone number?
The practice phone on file for Dr. Vanderland is (302) 733-1000.
What is Dr. Mark William Vanderland's medical license number?
Dr. Vanderland holds Pennsylvania license MT219154.
What drugs does Dr. Mark William Vanderland prescribe most?
In 2024 Medicare Part D data, Dr. Vanderland's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Clopidogrel.
Has Dr. Mark William Vanderland received payments from drug or device companies?
CMS Open Payments shows $5,936 in general payments to Dr. Vanderland from 30 companies from 2019 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mark William Vanderland been practicing?
Dr. Vanderland's NPI was assigned in 2019.
Does Dr. Mark William Vanderland do research?
Dmand AI links 2 publications to Dr. Vanderland, published from 2020 to 2021.
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