Physician Profile
Unclaimed ProfileAbout JONKER
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Education & Training
Areas of Expertise
Common questions
What is Dr. Jonker's specialty?
Dr. Jonker is an internal medicine in Hartford, CT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Jonker?
Dr. Jonker is listed at 79 RETREAT AVENUE HARTFORD HOSPITAL, ADULT PRIMARY CARE- BROWN STONE, Hartford, CT 06106. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Jonker?
The number on file is (860) 972-0200. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Jonker's NPI number?
Dr. Jonker's National Provider Identifier is 1780030452. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Jonker's medical education?
Dr. Jonker attended Other, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Jonker been practising?
Dr. Jonker has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Jonker known for?
According to Medicare billing data, Dr. Jonker the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Jonker confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Jonker. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (860) 972-0200
- Email not available
Practice Locations
79 RETREAT AVENUE HARTFORD HOSPITAL, ADULT PRIMARY CARE- BROWN STONE
Hartford, CT 06106
Procedures Most Often Billed to Medicare
636 services · 357 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
392 |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
125 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
85 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
34 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Other internal medicines in Hartford 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at Other 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.