Physician Profile
Alexander J. Greenstein, M.D.
Unclaimed ProfileAbout Dr. Greenstein
Alexander J. Greenstein, M.D. is a healthcare provider in New York, NY specializing in general surgery. Alexander trained at Js Weill Medical College, Cornell University, graduating in 2003. Alexander is also listed as specializing in surgery. Medicare claims data shows Alexander provided 123 services to 96 patients.
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
Source: NPPES NPI Registry
Contact Information
- (212) 241-8679
- Email not available
Practice Locations
5 E 98TH ST 15TH FLOOR, BOX 1259
New York, NY 10029
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
123 services · 96 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Drainage of abdominal abscess or infection | Procedure | 49020 |
13 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
44 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
43 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
23 |
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 New York 8
Same specialty, same city.
Trained at Js Weill Medical College, Cornell University 8
Other providers in the same specialty who trained at the same institution.
More connections — 9 related providers in 2 groups
Class of 2003 at Js Weill Medical College, Cornell University 8
Providers who graduated from the same medical school in the same year.
Also performs Drainage of abdominal abscess or infection 1
Providers in NY who bill this service to Medicare most often.
Common questions
What is Alexander J. Greenstein's specialty?
Alexander J. Greenstein is a general surgeon in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Surgery”.
NPI registry
Where can I find Alexander J. Greenstein?
Alexander J. Greenstein is listed at 5 E 98Th St 15Th Floor, Box 1259, New York, NY 10029. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Alexander J. Greenstein?
The number on file is (212) 241-8679. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Alexander J. Greenstein?
Alexander J. Greenstein's National Provider Identifier is 1992964035. 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 Alexander J. Greenstein's education?
Alexander J. Greenstein attended Js Weill Medical College, Cornell University, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Alexander J. Greenstein have?
Alexander J. Greenstein has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What is Alexander J. Greenstein known for?
According to Medicare billing data, Alexander J. Greenstein performs procedures including drainage of abdominal abscess or infection, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Alexander J. Greenstein's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Alexander J. Greenstein. 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.