Physician Profile
Unclaimed ProfileAbout GEFEN
Jonathan Yoav Gefen, M.D. practices general surgery in Wynnewood, PA. Jonathan is a 1997 graduate of Jefferson Medical College of Thomas Jefferson University. Jonathan is also listed as specializing in surgery. According to Medicare claims data, Jonathan cared for 575 Medicare patients across 655 services.
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
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (610) 642-1908
- Email not available
Practice Locations
100 E LANCASTER AVE SUITE 275 LANKENAU MED SCI BLDG.
Wynnewood, PA 19096
Procedures Most Often Billed to Medicare
655 services · 575 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Repair of groin hernia using an endoscope | Procedure | 49650 |
45 |
| Removal of gallbladder using an endoscope | Procedure | 47562 |
30 |
| Repair of groin hernia (5 years or older) | Procedure | 49505 |
20 |
| Initial repair of sliding hernia of abdomen, less than 3 cm in length | Procedure | 49591 |
19 |
| Repair of recurrent groin hernia using an endoscope | Procedure | 49651 |
11 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
141 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
132 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
93 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
54 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
27 |
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 general surgeons in Wynnewood 8
Same specialty, same city.
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1997 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Also performs Repair of groin hernia using an endoscope 8
Providers in PA who bill this service to Medicare most often.
Common questions
What does Dr. Gefen specialize in?
Dr. Gefen is a general surgeon in Wynnewood, PA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GENERAL SURGERY”.
NPI registry
Where is Dr. Gefen located?
Dr. Gefen is listed at 100 E LANCASTER AVE SUITE 275 LANKENAU MED SCI BLDG., Wynnewood, PA 19096. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gefen's phone number?
The number on file is (610) 642-1908. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Gefen's NPI number?
Dr. Gefen's National Provider Identifier is 1497758452. 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. Gefen go to medical school?
Dr. Gefen attended Jefferson Medical College of Thomas Jefferson University, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Gefen been practicing?
Dr. Gefen has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Gefen do most often?
According to Medicare billing data, Dr. Gefen performs procedures including repair of groin hernia using an endoscope, removal of gallbladder using an endoscope and repair of groin hernia, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Gefen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gefen. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.