Dr. William Aaron Preston, MD
- Part D claims, 2020
- 16
- Publications
- 8
- Industry payments
- $427
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 130 S Bryn Mawr Ave, Bryn Mawr, PA 19010
- Practice phone
- Call (215) 762-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Preston'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. William Aaron Preston is a general surgeon in Bryn Mawr, Pennsylvania
Dr. Preston practices in Bryn Mawr, Pennsylvania.
Dr. Preston's NPI, 1235795998, was assigned on May 17, 2019. Dr. Preston holds Pennsylvania license MT217609.
- NPI
- 1235795998NPI Registry (opens in a new tab)
- NPI enumeration date
- May 17, 2019
- NPI status
- Active
- Practice phone
- (215) 762-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. William Aaron Preston's practice address is in Bryn Mawr, Pennsylvania
Dr. Preston's practice address in the NPI Registry is 130 S Bryn Mawr Ave, Bryn Mawr, PA 19010, in Delaware County. The practice phone is (215) 762-7000.
- NPI Registry address130 S Bryn Mawr Ave, Bryn Mawr, PA 19010 · Delaware CountyPhone(215) 762-7000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. William Aaron Preston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Preston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Preston's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Aaron Preston is one of 1,398 general surgeons in Pennsylvania
Surgery is Dr. Preston's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Preston is licensed in Pennsylvania.
Specialties and state licenses
- Surgery, PennsylvaniaPrimary
General surgeons near Dr. Preston
Counts of general surgeons 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 Aaron Preston's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Preston's median patient age at 66, with 33% women.
Dr. Preston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women33%
- Men67%
Source: Dmand AI Patient Panel Data
Dr. William Aaron Preston wrote 16 Medicare Part D claims in 2020
In 2020, Dr. Preston wrote 16 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $59 in total drug cost.
Dr. Preston's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William Aaron Preston has 8 publications on record
Dmand AI links 8 papers to Dr. Preston, published from 2023 to 2024. 2023 was the busiest year, with 4. The most frequent topics are Bile Duct Neoplasms, Cholangiocarcinoma and Liver Transplantation. Dr. Preston has published most often in JCO Precis Oncol. Dr. Preston's most frequent co-authors are Adam Seth Bodzin, MD, Peter J. Altshuler, MD and Vinod P. Balachandran, MD.
Topics Dr. Preston writes about most
- Bile Duct Neoplasms
- Cholangiocarcinoma
- Liver Transplantation
Dr. Preston's most frequent co-authors
- Adam Seth Bodzin, MD4 shared papers
- Peter J. Altshuler, MD3 shared papers
- Vinod P. Balachandran, MD3 shared papers
Recent publications by Dr. Preston
BMJ Case Rep
See who Dr. Preston researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Preston 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. William Aaron Preston received $427 in industry payments from 2019 to 2025
CMS Open Payments shows 9 general payments to Dr. Preston from 5 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 80% of the total. Baxter Healthcare paid the most, $165.
General payments to Dr. Preston by program year, 2019 to 2025
General payments to Dr. Preston by kind, 2019 to 2025
- Food and beverage$34380%
- Education$8420%
Companies that paid Dr. Preston 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. William Aaron Preston'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 |
| 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) |
| 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. William Aaron Preston
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 Aaron Preston's NPI number?
Dr. William Aaron Preston's NPI number is 1235795998. It was assigned on May 17, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. William Aaron Preston?
Dr. William Aaron Preston is a general surgeon in Bryn Mawr, Pennsylvania. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. William Aaron Preston practice?
Dr. Preston practices at 130 S Bryn Mawr Ave, Bryn Mawr, PA 19010.
What is Dr. William Aaron Preston's office phone number?
The practice phone on file for Dr. Preston is (215) 762-7000.
What is Dr. William Aaron Preston's medical license number?
Dr. Preston holds Pennsylvania license MT217609.
What drugs does Dr. William Aaron Preston prescribe most?
In 2020 Medicare Part D data, Dr. Preston's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. William Aaron Preston received payments from drug or device companies?
CMS Open Payments shows $427 in general payments to Dr. Preston from 5 companies from 2019 to 2025. The largest total came from Baxter Healthcare.
How long has Dr. William Aaron Preston been practicing?
Dr. Preston's NPI was assigned in 2019.
Does Dr. William Aaron Preston do research?
Dmand AI links 8 publications to Dr. Preston, published from 2023 to 2024.
Who does Dr. William Aaron Preston publish with?
Dr. Preston's most frequent co-authors are Adam Seth Bodzin, MD (4 shared papers), Peter J. Altshuler, MD (3 shared papers) and Vinod P. Balachandran, MD (3 shared papers).
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