Physician Profile
Jonathan A. Kark, MD
Unclaimed ProfileAbout Dr. Kark
Jonathan A. Kark, MD practices orthopaedic surgery of the spine in Portland, OR. Jonathan is a 2014 graduate of University of Colorado School of Medicine, Aurora. Jonathan is also listed as specializing in orthopaedic trauma and orthopaedic surgery. According to Medicare claims data, Jonathan cared for 108 Medicare patients across 177 services. The services billed most often include fusion of additional segment of spine, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and telephone medical discussion with physician, 5-10 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (503) 418-8993
- Email not available
Practice Locations
3181 SW SAM JACKSON PARK RD # OP31
Portland, OR 97239
Procedures Most Often Billed to Medicare
177 services · 108 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Fusion of additional segment of spine | Procedure | 22614 |
75 | More often than most peers in Orthopaedic Surgery of the Spine |
| Placement of stabilizing device to back, 3-6 spine bone segments | Procedure | 22842 |
11 | |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
27 | |
| Telephone medical discussion with physician, 5-10 minutes | Office visit | 99441 |
17 | As often as other peers in Orthopaedic Surgery of the Spine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
17 | |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
16 | As often as other peers in Orthopaedic Surgery of the Spine |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
14 |
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.
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.
Other orthopaedic surgery of the spines in Portland 8
Same specialty, same city.
Trained at University of Colorado School of Medicine, Aurora 2
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 2014 at University of Colorado School of Medicine, Aurora 8
Providers who graduated from the same medical school in the same year.
Also performs Fusion of additional segment of spine 7
Providers in OR who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Kark?
Dr. Kark is an orthopaedic surgery of the spine in Portland, OR. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Kark's address?
Dr. Kark is listed at 3181 Sw Sam Jackson Park Rd # Op31, Portland, OR 97239. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Kark?
The number on file is (503) 418-8993. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Kark's NPI number?
Dr. Kark's National Provider Identifier is 1902225386. 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
Where did Dr. Kark train?
Dr. Kark attended University of Colorado School of Medicine, Aurora, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Kark been practicing?
Dr. Kark has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Kark perform?
According to Medicare billing data, Dr. Kark performs procedures including fusion of additional segment of spine and placement of stabilizing device to back, 3-6 spine bone segments, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Kark confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Kark. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.