Dr. John Aaron, MD
- Part D claims, 2024
- 30
- Hospital affiliations
- 1
- Industry payments
- $378
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 5501 Old York Road, Philadelphia, PA 19141
- Practice phone
- Call (215) 456-6090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Aaron'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. John Aaron is an internist in Philadelphia, Pennsylvania
Dr. Aaron practices at Jefferson Einstein Philadelphia Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University.
Dr. Aaron's NPI, 1427094531, was assigned on June 20, 2006. Dr. Aaron holds Pennsylvania license MD045839L.
- NPI
- 1427094531NPI Registry (opens in a new tab)
- NPI enumeration date
- June 20, 2006
- NPI status
- Active
- Practice phone
- (215) 456-6090
- 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 Affiliation Data
Dr. John Aaron practices at Jefferson Einstein Philadelphia Hospital in Philadelphia, Pennsylvania
Dr. Aaron's primary practice is Jefferson Einstein Philadelphia Hospital, at 5501 Old York Road, Philadelphia, PA 19141 in Philadelphia County. The practice phone is (215) 456-6090.
- Jefferson Einstein Philadelphia Hospital5501 Old York Road, Philadelphia, PA 19141 · Philadelphia CountyPhone(215) 456-6090
Source: Dmand AI Affiliation Data
Dr. John Aaron is affiliated with 3 sites of care
Dr. Aaron's primary practice is Jefferson Einstein Philadelphia Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University. Dmand AI also links Dr. Aaron to 1 dialysis center and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Aaron's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Aaron practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jefferson Einstein Philadelphia Hospital | Available with a free account |
| +2 more affiliated sites | 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 Thomas Jefferson University and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Aaron is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Aaron's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Aaron is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Aaron
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. John Aaron's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Aaron's median patient age at 62, with 56% women.
Dr. Aaron's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women56%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. John Aaron wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Aaron wrote 30 Medicare Part D claims. 100% of them were for generic drugs. They cover 2 drugs, with $578 in total drug cost. In 2019, CMS named 13 claims across 1 drug.
Dr. Aaron'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.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 132020: 33154%
Drugs named by CMS: 2 in 2020, 1 in 2019.
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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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John Aaron received $378 in industry payments from 2016 to 2023
CMS Open Payments shows 4 general payments to Dr. Aaron from 4 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $129.
General payments to Dr. Aaron by program year, 2016 to 2023
Companies that paid Dr. Aaron the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Aaron'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 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) |
| 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. John Aaron
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. John Aaron's NPI number?
Dr. John Aaron's NPI number is 1427094531. It was assigned on June 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Aaron?
Dr. John Aaron is an internist in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Aaron practice?
Dr. Aaron practices at 5501 Old York Road, Philadelphia, PA 19141. Dr. Aaron's primary practice is Jefferson Einstein Philadelphia Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University. Dmand AI also links Dr. Aaron to 1 dialysis center and 1 physician office.
What is Dr. John Aaron's office phone number?
The practice phone on file for Dr. Aaron is (215) 456-6090.
What is Dr. John Aaron's medical license number?
Dr. Aaron holds Pennsylvania license MD045839L.
Which hospitals is Dr. John Aaron affiliated with?
Dr. Aaron practices at Jefferson Einstein Philadelphia Hospital in Philadelphia, Pennsylvania.
What drugs does Dr. John Aaron prescribe most?
In 2020 Medicare Part D data, Dr. Aaron's most prescribed drugs by claims were Sildenafil Citrate and Prednisone.
Has Dr. John Aaron received payments from drug or device companies?
CMS Open Payments shows $378 in general payments to Dr. Aaron from 4 companies from 2016 to 2023. The largest total came from Abbott Laboratories.
How long has Dr. John Aaron been practicing?
Dr. Aaron's NPI was assigned in 2006.
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