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Edit this profileAt a glance
- 1 Barnes Jewish Hospital Plz, Div Surg Transplant, Saint Louis, MO 63110
About Dr. Martens
Based in Saint Louis, MO, Gregory Martens, MD is listed in the NPI registry under surgery. Gregory graduated from Indiana University School of Medicine in 2012. According to Medicare claims data, Gregory cared for 50 Medicare patients across 60 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, transplantation of donor kidney, and preparation of donor kidney for transplantation. NPI 1316201940 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
- (314) 747-9889
- Email not available
Practice Locations
1 BARNES JEWISH HOSPITAL PLZ DIV SURG TRANSPLANT
Saint Louis, MO 63110
Conditions Commonly Evaluated or Treated
Within Surgery (Unspecified) 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
Breast conditions
Cancer
- Colon cancer
- Esophageal cancer
- Liver cancer
- Neuroendocrine Tumors
- Pancreatic cancer
- Soft-tissue sarcoma
- Stomach cancer
- Thyroid cancer
Colorectal
Digestive
- Abdominal adhesions
- Acid reflux
- Acute pancreatitis
- Bowel obstruction
- Colon polyps
- Diverticulitis
- Gastroparesis
- Peptic ulcer disease
Digestive & blood
Digestive health
- Crohn's disease
- Fecal incontinence
- Perforated bowel
- Severe chronic constipation
- Swallowing difficulties
- Ulcerative colitis
Endocrine
Infections
Lumps & bumps
Lymphatic
Minor surgery
Skin & scars
Skin & soft tissue
Skin cancer
Vascular
Weight & metabolism
Wound care
Wounds
Procedures & services
Endocrine
Vascular
Wounds
Most searched procedures
Abdominal
Abdominal surgery
Bariatric
Breast surgery
Cancer
Cancer surgery
Colorectal
- Anal fistula surgery
- Anal Sphincter Repair
- Colon resection
- Hemorrhoid removal
- Ostomy reversal
- Ostomy surgery
- Rectal prolapse repair
- Surgery for chronic anal fissure
Consultations
Diagnostic
Digestive
Digestive health
Infections
Minor surgery
Post-op care
Reconstruction
Skin & soft tissue
- Cyst Removal
- Lipoma removal
- Mole removal
- Pilonidal cyst surgery
- Scar revision surgery
- Skin Tag Removal
Skin cancer
Vascular & cancer
Weight loss
Wound care
Procedures Most Often Billed to Medicare
60 services · 50 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Transplantation of donor kidney | Procedure | 50360 |
14 | Less often than most peers in Surgery |
| Preparation of donor kidney for transplantation | Procedure | 50323 |
14 | Less often than most peers in Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
32 | As often as other peers in 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.
Other general surgeons at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 27 related providers in 4 groups
Other general surgeons in Saint Louis 8
Same specialty, same city.
Trained at Indiana University School of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 2012 at Indiana University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Transplantation of donor kidney 5
Providers in MO who bill this service to Medicare most often.
Common questions
What is Dr. Martens's specialty?
Dr. Martens is a general surgeon in Saint Louis, MO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Surgery”.
NPI registry
Where can I find Dr. Martens?
Dr. Martens is listed at 1 Barnes Jewish Hospital Plz Div Surg Transplant, Saint Louis, MO 63110. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Martens?
The number on file is (314) 747-9889. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Martens's NPI number?
Dr. Martens's National Provider Identifier is 1316201940. 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 Dr. Martens's medical education?
Dr. Martens attended Indiana University School of Medicine, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Martens been practicing?
Dr. Martens has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Martens known for?
According to Medicare billing data, Dr. Martens performs procedures including transplantation of donor kidney and preparation of donor kidney for transplantation, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Martens confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Martens. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.