NephrectomyPolycystic Kidney, Autosomal DominantPostoperative Complications
Dr. John Michael Masterson, MD
NPI1043773732PAC ID0345787826
- Part D claims, 2026
- 184
- Publications
- 18
- Hospital affiliations
- 2
- Industry payments
- $4,033
- Medical groups
- 2
- Practice address
- 200 Hygeia Dr, Newark, DE 19713
- Practice phone
- Call (302) 428-2522
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare Health Services
Newark, Delaware
Find Dr. Masterson'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 Michael Masterson is a urologist in Newark, Delaware
Dr. Masterson practices at ChristianaCare Health Services in Newark, Delaware.
Dr. Masterson's NPI, 1043773732, was assigned on April 9, 2019. Dr. Masterson graduated from University of Miami, Lm Miller School of Medicine in 2019. Dr. Masterson holds New York license 325918.
NPI and contact details
- NPI
- 1043773732NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345787826
- NPI enumeration date
- April 9, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (302) 428-2522
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Michael Masterson practices at ChristianaCare Health Services in Newark, Delaware
Dr. Masterson's primary practice is ChristianaCare Health Services, at 200 Hygeia Dr, Newark, DE 19713 in New Castle County. The practice phone is (302) 428-2522.
- ChristianaCare Health Services200 Hygeia Dr, Newark, DE 19713 · New Castle CountyPhone(302) 428-2522
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Michael Masterson is affiliated with 5 sites of care and 2 medical groups
Dr. Masterson's primary practice is ChristianaCare Health Services in Newark, Delaware. Dr. Masterson is also affiliated with Christiana Hospital. The medical group on file is ChristianaCare. Dmand AI also links Dr. Masterson to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
ChristianaCare Health ServicesPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Michael Masterson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Masterson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Health Services | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Masterson practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Michael Masterson is one of 40 urologists in Delaware
Urology is Dr. Masterson's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Masterson is licensed in New York.
Specialties and state licenses
- Urology, New YorkPrimary
Urologists near Dr. Masterson
Counts of urologists 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 Michael Masterson's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Masterson's median patient age at 64, with 31% women.
Dr. Masterson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women31%
- Men68%
Source: Dmand AI Patient Panel Data
Dr. John Michael Masterson wrote 184 Medicare Part D claims in 2026
In 2026, Dr. Masterson wrote 184 Medicare Part D claims for 116 patients. 94% of them were for generic drugs. CMS names the drug for 89 of them, across 3 drugs with 11 or more claims each, at $183 in total drug cost. In 2023, CMS named 260 claims across 7 drugs.
Part D claims, 2026184
Drugs named by CMS3
Total drug cost$183
Part D patients116
Dr. Masterson's Part D claims by kind of drug, 2026
- Generic173 claims94%
- Brand-name11 claims6%
Dr. Masterson'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.
Drug classes CMS tracks in Dr. Masterson's Part D claims, 2026
- Opioids37%68 of 184 claims
- Antibiotics26%48 of 184 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2602024: 8966%
Drugs named by CMS: 3 in 2024, 7 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), 2026 data
How Dr. John Michael Masterson takes part in Medicare
Dr. Masterson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find urologists like Dr. Masterson by procedure volume and prescribing
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 Michael Masterson has 18 publications on record
Dmand AI links 18 papers to Dr. Masterson, published from 2018 to 2025. 2020 was the busiest year, with 3. The most frequent topics are Erectile Dysfunction, Penile Erection and Penile Implantation. Dr. Masterson has published most often in Int J Impot Res. Dr. Masterson's most frequent co-authors are Ranjith Ramasamy, MD, Thomas A. Masterson, MD and Jennifer T. Anger, MD.
Papers18
Years published2018 to 2025
Dr. Masterson's papers by year, 2018 to 2025
Topics Dr. Masterson writes about most
- Erectile Dysfunction
- Penile Erection
- Penile Implantation
- Penile Prosthesis
- Penis
- Testosterone
Dr. Masterson's most frequent co-authors
- Ranjith Ramasamy, MD8 shared papers
- Thomas A. Masterson, MD4 shared papers
- Jennifer T. Anger, MD2 shared papers
Recent publications by Dr. Masterson
MMWR Morb Mortal Wkly Rep
COVID-19IncomeLos Angeles
Hormone Replacement TherapyTestosterone
J Pediatr Urol
Circumcision, MaleSocial MediaVideo Recording
Body Mass IndexHypogonadismLuteinizing Hormone
See who Dr. Masterson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Masterson works with, so you can find a warm path to the right urologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Michael Masterson received $4,033 in industry payments from 2022 to 2025
CMS Open Payments shows 45 general payments to Dr. Masterson from 13 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 83% of the total. Coloplast Corp paid the most, $1,680.
General payments to Dr. Masterson by program year, 2022 to 2025
General payments to Dr. Masterson by kind, 2022 to 2025
$4Kin total
- Food and beverage$3,33583%
- Travel and lodging$68317%
- Speaker and faculty fees$150%
Companies that paid Dr. Masterson the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Michael Masterson graduated from University of Miami, Lm Miller School of Medicine
Dr. Masterson graduated from University of Miami, Lm Miller School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Michael Masterson'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. John Michael Masterson
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 Michael Masterson's NPI number?
Dr. John Michael Masterson's NPI number is 1043773732. It was assigned on April 9, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. John Michael Masterson?
Dr. John Michael Masterson is a urologist in Newark, Delaware. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. John Michael Masterson practice?
Dr. Masterson practices at 200 Hygeia Dr, Newark, DE 19713. Dr. Masterson's primary practice is ChristianaCare Health Services in Newark, Delaware. Dmand AI also links Dr. Masterson to 1 hospital, 2 group practices and clinics and 1 medical group, and a free account names each one.
What is Dr. John Michael Masterson's office phone number?
The practice phone on file for Dr. Masterson is (302) 428-2522. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. John Michael Masterson's email address?
Dmand AI checks professional and personal email addresses for Dr. Masterson through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. John Michael Masterson's medical license number?
Dr. Masterson holds New York license 325918.
Which hospitals is Dr. John Michael Masterson affiliated with?
Dr. Masterson is affiliated with Christiana Hospital. Dmand AI links Dr. Masterson to 1 more hospital, named with a free account.
What medical group is Dr. John Michael Masterson part of?
Dr. Masterson is linked to ChristianaCare. Dmand AI links Dr. Masterson to 1 more medical group, named with a free account.
Who does Dr. John Michael Masterson practice with?
Dmand AI links 1,864 HCPs to Dr. Masterson's primary medical group, 14 of them urologists. A free account lists them, with verified contacts.
Does Dr. John Michael Masterson accept Medicare?
Yes. CMS lists Dr. Masterson as accepting Medicare assignment.
Show 7 more questionsShow fewer questions
Where did Dr. John Michael Masterson go to medical school?
Dr. Masterson graduated from University of Miami, Lm Miller School of Medicine in 2019.
What drugs does Dr. John Michael Masterson prescribe most?
In 2024 Medicare Part D data, Dr. Masterson's most prescribed drugs by claims were Tramadol HCl, Sulfamethoxazole-Trimethoprim and Cephalexin.
Has Dr. John Michael Masterson received payments from drug or device companies?
CMS Open Payments shows $4,033 in general payments to Dr. Masterson from 13 companies from 2022 to 2025. The largest total came from Coloplast Corp.
How long has Dr. John Michael Masterson been practicing?
Dr. Masterson graduated from medical school in 2019, 7 years ago.
Does Dr. John Michael Masterson do research?
Dmand AI links 18 publications to Dr. Masterson, published from 2018 to 2025.
Who does Dr. John Michael Masterson publish with?
Dr. Masterson's most frequent co-authors are Ranjith Ramasamy, MD (8 shared papers), Thomas A. Masterson, MD (4 shared papers) and Jennifer T. Anger, MD (2 shared papers).
What EHR does Dr. John Michael Masterson's practice use?
Dmand AI tracks the EHR system at ChristianaCare Health Services and at 4 more sites and 1 medical group. The vendor and product are available with a free Dmand AI account.
Selling to urology practices?
See urologists in Delaware by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card