Dr. John Frederick Decarli, DO
- Medicare services, 2024
- 338
- Medicare patients, 2024
- 159
- Part D claims, 2024
- 125
- Hospital affiliations
- 2
- Industry payments
- $1,767
- 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
ChristianaCare Wilmington Hospital
Wilmington, Delaware
Find Dr. Decarli'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 Frederick Decarli is an internist in Wilmington, Delaware
Dr. Decarli practices at ChristianaCare Wilmington Hospital in Wilmington, Delaware.
Dr. Decarli's NPI, 1063404044, was assigned on August 17, 2005. Dr. Decarli graduated from Philadelphia College of Osteopathic Medicine in 1985. Dr. Decarli holds Delaware license C2-0002853.
- NPI
- 1063404044NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214076223
- NPI enumeration date
- August 17, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (302) 733-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Frederick Decarli practices at ChristianaCare Wilmington Hospital in Wilmington, Delaware
Dr. Decarli's primary practice is ChristianaCare Wilmington Hospital, at 501 W 14th St, Wilmington, DE 19801 in New Castle County. The practice phone is (302) 733-1000.
- ChristianaCare 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. John Frederick Decarli is affiliated with 7 sites of care and 2 medical groups
Dr. Decarli's primary practice is ChristianaCare Wilmington Hospital in Wilmington, Delaware. Dr. Decarli is also affiliated with Christiana Hospital. The medical group on file is ChristianaCare. Dmand AI also links Dr. Decarli to 1 more hospital, 2 home health agencies, 1 physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Frederick Decarli's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Decarli practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Wilmington Hospital | Available with a free account |
| +6 more sites and 1 medical group | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Frederick Decarli is one of 615 internists in Delaware
Internal medicine is Dr. Decarli's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Decarli is licensed in Delaware.
Specialties and state licenses
- Internal medicine, DelawarePrimary
Internists near Dr. Decarli
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 Frederick Decarli billed Medicare for 338 services in 2024
CMS data shows 338 Medicare services from Dr. Decarli across 5 procedure codes in 2024, for 159 Medicare patients. Medicare paid $15,063 for them.
Dr. Decarli's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2692024: 2742%
- Surgery
- 2023: 192024: 64237%
Where Dr. Decarli's Medicare services took place, 2024
- In an office16047%
- In a facility17853%
Dr. Decarli compared with the Delaware median for internists, 2024
- Dr. Decarli
- Delaware median
- Medicare services
- 338vs 68651% below
- Medicare patients
- 159vs 28745% below
- Part D claims
- 80vs 12435% below
Medians across 565 internists in Delaware with Dmand AI profiles that report each measure.
Dr. Decarli's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Decarli?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Decarli and other internists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Frederick Decarli treated 159 Medicare patients in 2024, average age 74
CMS counts 159 Medicare patients who saw Dr. Decarli in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.16, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Decarli's median patient age at 67, with 44% women.
Dr. Decarli's Medicare patients by age, 2024
Dr. Decarli's Medicare patients by sex, 2024
- Women6642%
- Men9358%
Chronic conditions among Dr. Decarli's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Diabetes48%
- Chronic kidney disease39%
- Atrial fibrillation33%
- Ischemic heart disease32%
- Mood disorders30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Decarli's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women44%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Frederick Decarli wrote 125 Medicare Part D claims in 2024
In 2024, Dr. Decarli wrote 125 Medicare Part D claims for 68 patients. 91% of them were for generic drugs. CMS names the drug for 80 of them, across 4 drugs with 11 or more claims each, at $8,474 in total drug cost. In 2023, CMS named 60 claims across 4 drugs.
Dr. Decarli's Part D claims by kind of drug, 2024
- Generic114 claims91%
- Brand-name11 claims9%
Dr. Decarli'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. Decarli's Part D claims, 2024
- Antibiotics40%50 of 125 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: 602024: 8033%
Drugs named by CMS: 4 in 2024, 4 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
Dr. John Frederick Decarli ranks in the 84th percentile for removal of tissue in Medicare
Dr. Decarli accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 88 procedures of removal of tissue by Dr. Decarli, more than 84% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Decarli ranks in Medicare procedure volume
- Removal of tissue
- 84th percentile88 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
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 Frederick Decarli received $1,767 in industry payments from 2016 to 2025
CMS Open Payments shows 90 general payments to Dr. Decarli from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Smith & Nephew, Inc. paid the most, $566.
General payments to Dr. Decarli by program year, 2016 to 2025
Companies that paid Dr. Decarli 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. John Frederick Decarli graduated from Philadelphia College of Osteopathic Medicine
Dr. Decarli graduated from Philadelphia College of Osteopathic Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Frederick Decarli'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 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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 Frederick Decarli
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 Frederick Decarli's NPI number?
Dr. John Frederick Decarli's NPI number is 1063404044. It was assigned on August 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Frederick Decarli?
Dr. John Frederick Decarli is an internist in Wilmington, Delaware. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Frederick Decarli practice?
Dr. Decarli practices at 501 W 14th St, Wilmington, DE 19801. Dr. Decarli's primary practice is ChristianaCare Wilmington Hospital in Wilmington, Delaware. Dmand AI also links Dr. Decarli to 1 hospital, 2 home health agencies, 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. John Frederick Decarli's office phone number?
The practice phone on file for Dr. Decarli is (302) 733-1000.
What is Dr. John Frederick Decarli's medical license number?
Dr. Decarli holds Delaware license C2-0002853.
Which hospitals is Dr. John Frederick Decarli affiliated with?
Dr. Decarli is affiliated with Christiana Hospital. Dmand AI links Dr. Decarli to 1 more hospital.
What medical group is Dr. John Frederick Decarli part of?
Dr. Decarli is linked to ChristianaCare. Dmand AI links Dr. Decarli to 1 more medical group.
Does Dr. John Frederick Decarli accept Medicare?
Yes. CMS data shows Dr. Decarli billed Medicare for 338 services in 2024, and Dr. Decarli accepts Medicare assignment.
How many Medicare patients does Dr. John Frederick Decarli see?
CMS counts 159 Medicare patients who saw Dr. Decarli in 2024, with an average age of 74.
What services does Dr. John Frederick Decarli bill to Medicare?
In 2024, Dr. Decarli's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99212) and surgery: bones and joints (29581).
Show 4 more questionsShow fewer questions
Where did Dr. John Frederick Decarli go to medical school?
Dr. Decarli graduated from Philadelphia College of Osteopathic Medicine in 1985.
What drugs does Dr. John Frederick Decarli prescribe most?
In 2024 Medicare Part D data, Dr. Decarli's most prescribed drugs by claims were Gentamicin Sulfate, Doxycycline Hyclate and Mupirocin.
Has Dr. John Frederick Decarli received payments from drug or device companies?
CMS Open Payments shows $1,767 in general payments to Dr. Decarli from 25 companies from 2016 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Dr. John Frederick Decarli been practicing?
Dr. Decarli graduated from medical school in 1985, 41 years ago.
Selling to internal medicine practices?
See internists 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