Dr. Karl E. De Jonge, MD
- Medicare services, 2024
- 895
- Medicare patients, 2024
- 270
- Part D claims, 2024
- 1,002
- Hospital affiliations
- 1
- Industry payments
- $48
- Practice address
- 6856 Eastern NW Ave, Washington, DC 20012
- Practice phone
- Call (202) 829-1719
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Specialty Home Care
Washington, District of Columbia
Find Dr. De Jonge'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. Karl E. De Jonge is a geriatric medicine (internal medicine) physician in Washington, District of Columbia
Dr. De Jonge practices at Specialty Home Care in Washington, District of Columbia.
Dr. De Jonge's NPI, 1346293388, was assigned on May 19, 2006. Dr. De Jonge graduated from Yale School of Medicine in 1991. Dr. De Jonge holds District of Columbia license MD20969.
- NPI
- 1346293388NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830226968
- NPI enumeration date
- May 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (202) 829-1719
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karl E. De Jonge practices at Specialty Home Care in Washington, District of Columbia
Dr. De Jonge's primary practice is Specialty Home Care, at 6856 Eastern NW Ave, Washington, DC 20012 in District Of Columbia County. The practice phone is (202) 829-1719.
- Specialty Home Care6856 Eastern NW Ave, Washington, DC 20012 · District Of Columbia CountyPhone(202) 829-1719
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karl E. De Jonge is affiliated with 6 sites of care and 2 medical groups
Dr. De Jonge's primary practice is Specialty Home Care in Washington, District of Columbia. Dr. De Jonge is also affiliated with MedStar Washington Hospital Center. The medical group on file is MedStar Washington Hospital Center. Dmand AI also links Dr. De Jonge to 3 more home health agencies, 1 hospice and 1 medical group, each named with a free account.
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. Karl E. De Jonge's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De Jonge practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Specialty Home Care | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karl E. De Jonge is one of 25 geriatric medicine (internal medicine) physicians in District of Columbia
Geriatric medicine is Dr. De Jonge's primary specialty in the NPI Registry, under taxonomy code 207RG0300X. Dr. De Jonge is board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. De Jonge's licenses on file in 3 states: District of Columbia, Maryland and Virginia.
Specialties and state licenses
- Geriatric medicine (internal medicine), District of ColumbiaPrimary
- Maryland license
- Virginia license
Clinical focus
Dmand AI lists acute skin infection, alzheimer's disease, anxiety, arthritis, atrial fibrillation and flutter, cardiomyopathy, cerebrovascular disease and chronic anemia among the conditions Dr. De Jonge treats.
Geriatric medicine (internal medicine) physicians near Dr. De Jonge
Counts of geriatric medicine (internal medicine) physicians 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. Karl E. De Jonge billed Medicare for 895 services in 2024
CMS data shows 895 Medicare services from Dr. De Jonge across 15 procedure codes in 2024, for 270 Medicare patients. Medicare paid $92,475 for them.
Dr. De Jonge's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7362024: 6798%
- Other services
- 2023: 1092024: 16148%
- Surgery
- 2023: 02024: 38
- Tests and treatments
- 2023: 222024: 1723%
Where Dr. De Jonge's Medicare services took place, 2024
- In an office48855%
- In a facility40745%
Dr. De Jonge compared with the District of Columbia median for geriatric medicine (internal medicine) physicians, 2024
- Dr. De Jonge
- District of Columbia median
- Medicare services
- 895vs 8426% above
- Medicare patients
- 270vs 21426% above
- Part D claims
- 575vs 77326% below
Medians across 21 geriatric medicine (internal medicine) physicians in District of Columbia with Dmand AI profiles that report each measure.
Dr. De Jonge'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. De Jonge?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. De Jonge and other geriatric medicine (internal medicine) physicians in District of Columbia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karl E. De Jonge treated 270 Medicare patients in 2024, average age 86
CMS counts 270 Medicare patients who saw Dr. De Jonge in 2024. The largest group is 85 and over, with 154 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 46% are also on Medicaid. Their average risk score is 2.41, 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. De Jonge's median patient age at 84, with 64% women.
Dr. De Jonge's Medicare patients by age, 2024
Dr. De Jonge's Medicare patients by sex, 2024
- Women18970%
- Men8130%
Chronic conditions among Dr. De Jonge's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Arthritis61%
- Alzheimer's and dementia58%
- Chronic kidney disease56%
- Mood disorders45%
- Depression42%
- Diabetes41%
Share of Medicare patients with each condition. A patient can have several.
Dr. De Jonge's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 84
Patient panel by sex, all payers
- Women64%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karl E. De Jonge wrote 1,002 Medicare Part D claims in 2024
In 2024, Dr. De Jonge wrote 1,002 Medicare Part D claims for 143 patients. 80% of them were for generic drugs. CMS names the drug for 575 of them, across 27 drugs with 11 or more claims each, at $123,887 in total drug cost. In 2023, CMS named 746 claims across 32 drugs.
Dr. De Jonge's Part D claims by kind of drug, 2024
- Generic800 claims80%
- Brand-name171 claims17%
- Other31 claims3%
Dr. De Jonge'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. De Jonge's Part D claims, 2024
- Opioids2%24 of 1,002 claims
- Antibiotics1%15 of 1,002 claims
- Antipsychotics, patients 65 and over2%18 of 1,002 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: 7462024: 57523%
Drugs named by CMS: 27 in 2024, 32 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. Karl E. De Jonge offers telehealth to Medicare patients
Dr. De Jonge accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. De Jonge as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Karl E. De Jonge received $48 in industry payments from 2021 to 2025
CMS Open Payments shows 2 general payments to Dr. De Jonge from 2 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Caris MPI, Inc. paid the most, $35.
General payments to Dr. De Jonge by program year, 2021 to 2025
Companies that paid Dr. De Jonge the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karl E. De Jonge graduated from Yale School of Medicine
Dr. De Jonge graduated from Yale School of Medicine in 1991.
- Medical school
- Board certified in geriatric medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Karl E. De Jonge accepts plans from 8 insurance carriers
Dr. De Jonge is in network with 8 carriers, including Elevance, Cigna and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Cigna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- Regence Health Plans
- CareFirst BlueCross BlueShield
- CMS Medicare
Plan types Dr. De Jonge accepts, by number of carriers
- Medicare8
- PPO6
- HMO2
- EPO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Karl E. De Jonge'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Karl E. De Jonge
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. Karl E. De Jonge's NPI number?
Dr. Karl E. De Jonge's NPI number is 1346293388. It was assigned on May 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Karl E. De Jonge?
Dr. Karl E. De Jonge is a geriatric medicine (internal medicine) physician in Washington, District of Columbia. The primary specialty in the NPI Registry is Geriatric Medicine (Internal Medicine) Physician (taxonomy code 207RG0300X).
Where does Dr. Karl E. De Jonge practice?
Dr. De Jonge practices at 6856 Eastern NW Ave, Washington, DC 20012. Dr. De Jonge's primary practice is Specialty Home Care in Washington, District of Columbia. Dmand AI also links Dr. De Jonge to 3 home health agencies, 1 hospice and 1 medical group.
What is Dr. Karl E. De Jonge's office phone number?
The practice phone on file for Dr. De Jonge is (202) 829-1719.
What is Dr. Karl E. De Jonge's medical license number?
Dr. De Jonge holds District of Columbia license MD20969, one of the licenses on file in 3 states.
Which states has Dr. Karl E. De Jonge been licensed in?
Dmand AI has state licenses on file for Dr. De Jonge in District of Columbia (1994 to 2026), Maryland (1992 to 2026) and Virginia (2019 to 2022).
Which hospitals is Dr. Karl E. De Jonge affiliated with?
Dr. De Jonge is affiliated with MedStar Washington Hospital Center.
What medical group is Dr. Karl E. De Jonge part of?
Dr. De Jonge is linked to MedStar Washington Hospital Center. Dmand AI links Dr. De Jonge to 1 more medical group.
Does Dr. Karl E. De Jonge accept Medicare?
Yes. CMS data shows Dr. De Jonge billed Medicare for 895 services in 2024, and Dr. De Jonge accepts Medicare assignment.
Does Dr. Karl E. De Jonge offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. De Jonge as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Karl E. De Jonge see?
CMS counts 270 Medicare patients who saw Dr. De Jonge in 2024, with an average age of 86.
Is Dr. Karl E. De Jonge board certified?
Yes. Dr. De Jonge is board certified in geriatric medicine by the American Board of Internal Medicine.
What services does Dr. Karl E. De Jonge bill to Medicare?
In 2024, Dr. De Jonge's most billed Medicare services were hospital inpatient care (99233), home visit (99350) and hospital inpatient care (99223).
Where did Dr. Karl E. De Jonge go to medical school?
Dr. De Jonge graduated from Yale School of Medicine in 1991.
What drugs does Dr. Karl E. De Jonge prescribe most?
In 2024 Medicare Part D data, Dr. De Jonge's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Sertraline HCl.
Has Dr. Karl E. De Jonge received payments from drug or device companies?
CMS Open Payments shows $48 in general payments to Dr. De Jonge from 2 companies from 2021 to 2025. The largest total came from Caris MPI, Inc.
How long has Dr. Karl E. De Jonge been practicing?
Dr. De Jonge graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Karl E. De Jonge accept?
Dr. De Jonge is in network with 8 carriers, including Elevance, Cigna and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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