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Edit this profileAt a glance
- 100 E Lancaster Ave, Suite 275 Lankenau Med Sci Bldg., Wynnewood, PA 19096
About Dr. Gefen
Jonathan Y. 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. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1497758452.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (610) 642-1908
- Email not available
Practice Locations
100 E LANCASTER AVE SUITE 275 LANKENAU MED SCI BLDG.
Wynnewood, PA 19096
Conditions Commonly Evaluated or Treated
Within General Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anorectal
Appendix, bowel, and emergency
Gallbladder and biliary
Hernia and abdominal wall
Skin and soft tissue
Abdominal
Abdominal wall
Breast
Colorectal
Digestive
- Acid reflux
- Acute pancreatitis
- Bleeding Stomach Ulcer
- Bowel Fistula
- Gastroparesis
- Swallowing difficulties
Emergency surgery
Endocrine
Gastrointestinal
Hernia
Infections
Lymphatic
Oncology
Procedures & services
Most searched procedures
Bowel and emergency abdominal
- Colon resection
- Exploratory laparoscopy
- Exploratory laparotomy
- Repair of perforated peptic ulcer
- Small-bowel resection
- Surgery for bowel obstruction
- Surgical drainage of abdominal abscess
- Surgical lysis of adhesions
Gallbladder and appendix
Hernia repair
Skin and soft tissue
Abdominal surgery
Abdominal wall
Access and nutrition
Anorectal
- Anal fistula surgery
- Drainage of anal abscess
- Hemorrhoid removal
- Rubber-band ligation of hemorrhoids
- Surgery for chronic anal fissure
Biopsy
Breast surgery
- Axillary lymph-node dissection
- Excisional biopsy of a breast mass
- Mastectomy
- Sentinel lymph-node biopsy
Breast Surgery
Colorectal
Colorectal surgery
Digestive procedures
Endocrine surgery
Gastrointestinal
Hernia surgery
Skin & Soft Tissue
Surgical Oncology
Surgical procedures
Vascular Access
Wound care
Procedures Most Often Billed to Medicare
655 services · 575 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Repair of groin hernia using an endoscope | Procedure | 49650 |
45 | More than most peers in General Surgery |
| Removal of gallbladder using an endoscope | Procedure | 47562 |
30 | More than most peers in General Surgery |
| Repair of groin hernia (5 years or older) | Procedure | 49505 |
20 | More often than most peers in General Surgery |
| Initial repair of sliding hernia of abdomen, less than 3 cm in length | Procedure | 49591 |
19 | More often than most peers in General Surgery |
| Repair of recurrent groin hernia using an endoscope | Procedure | 49651 |
11 | Too few peers to compare |
| 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 | More than most peers in General Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
132 | More often than most peers in General Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
93 | More often than most peers in General Surgery |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
54 | More often than most peers in General Surgery |
| 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 | More often than most peers in General Surgery |
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 Jonathan Y. Gefen specialize in?
Jonathan Y. Gefen is a general surgeon in Wynnewood, PA. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Surgery”.
NPI registry
Where is Jonathan Y. Gefen located?
Jonathan Y. 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 Jonathan Y. Gefen's phone number?
The number on file is (610) 642-1908. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Jonathan Y. Gefen's NPI number?
Jonathan Y. 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 Jonathan Y. Gefen train?
Jonathan Y. 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 Jonathan Y. Gefen been practicing?
Jonathan Y. Gefen has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Jonathan Y. Gefen do most often?
According to Medicare billing data, Jonathan Y. 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 Jonathan Y. Gefen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Jonathan Y. Gefen. If this is you, claiming it is free.
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