Physician Profile
Gregg K. Nishi, M.D.
Unclaimed ProfileAbout Dr. Nishi
Based in Beverly Hills, CA, Gregg K. Nishi, M.D. is listed in the NPI registry under general surgery. Gregg graduated from George Washington University School of Medicine in 1999. Gregg is also listed as specializing in surgery and critical care medicine. According to Medicare claims data, Gregg cared for 170 Medicare patients across 444 services. The services billed most often include critical care, first 30-74 minutes, hospital discharge day management, 30 minutes or less, and insertion of non-tunneled central venous tube for infusion (5 years or older). NPI 1972600344 identifies this record in the national registry.
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
- (310) 858-1242
- Email not available
Practice Locations
9033 WILSHIRE BLVD SUITE 200
Beverly Hills, CA 90211
5301 E Grant Rd
Tucson, AZ 85712
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
444 services · 170 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | Procedure | 36556 |
13 | Less often than most peers in General Surgery |
| Critical care, first 30-74 minutes | Office visit | 99291 |
417 | More than most peers in General Surgery |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
14 | Less 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 Beverly Hills 8
Same specialty, same city.
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1999 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of non-tunneled central venous tube for infusion (5 years or older) 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Gregg K. Nishi's specialty?
Gregg K. Nishi is a general surgeon in Beverly Hills, CA. 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 Gregg K. Nishi?
Gregg K. Nishi is listed at 9033 Wilshire Blvd Suite 200, Beverly Hills, CA 90211. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Gregg K. Nishi?
The number on file is (310) 858-1242. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gregg K. Nishi's NPI number?
Gregg K. Nishi's National Provider Identifier is 1972600344. 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 Gregg K. Nishi's education?
Gregg K. Nishi attended George Washington University School of Medicine, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregg K. Nishi been practicing?
Gregg K. Nishi has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What is Gregg K. Nishi known for?
According to Medicare billing data, Gregg K. Nishi performs procedures including insertion of non-tunneled central venous tube for infusion, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gregg K. Nishi confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregg K. Nishi. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.