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Active NPI 1316201940 Individual Practitioner Male Practitioner

Dr. Gregory Martens , MD

Surgery • Saint Louis, MO

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Martens, MD is a certified Surgery practicing in Saint Louis, MO. With approximately 14 years of clinical experience since graduating from Indiana University School Of Medicine in 2012, Dr. Martens delivers high-quality medical care to the local community at 1 BARNES JEWISH HOSPITAL PLZ.

Dr. Martens is affiliated with Washington University and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, preparation of donor kidney for transplantation, transplantation of donor kidney. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1 Barnes Jewish Hospital Plz
Div Surg Transplant

Saint Louis, MO 631101003

Telephone 3147479889
Fax 3143614197
Associated Practice Facility / Clinic
🏢 Midwest Lithotripsy, Llc Facility NPI 1831198639

Medicare Profile & Education

Medical School

Indiana University School Of Medicine

Graduation Year

2012

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Saint Louis, MO

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
14 Yrs -4.3 yrs vs City Avg
City Avg: 18.3 Yrs
State Avg: 26.1 Yrs
Regional Practice Density
246 Specialists

Practicing in Saint Louis, MO (766 Statewide)

Telehealth Adoption Rate
9.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
84.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Martens (14 Years) 14 Yrs
Saint Louis Specialty Average (18.3 Years) 18.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
32 22 $215.63 $75.42
50323 Preparation of donor kidney for transplantation
14 14 $1500.00 $70.12
50360 Transplantation of donor kidney
14 14 $14378.57 $2305.42

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MO 2021016714

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
200096570 (MO)

Hospital & Practice Group Affiliations

Washington University

4921 Parkview Pl, Saint Louis, MO 631101032

Phone: 3143624699

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

26 Associated Practitioners
NPI 1033558192

Doctor of Medicine (M.D.)

Mallory Hubbard , PA

Physician Assistant

NPI 1104478080

Physician Assistant

Dr. Jason Wellen , MD

Transplant Surgery

NPI 1134331382

Doctor of Medicine (M.D.)

Lauren Lutz , FNP

Nurse Practitioner

NPI 1174155337

Family Nurse Practitioner

Dr. Decha Enkvetchakul , MD

Internal Medicine - Nephrology

NPI 1205852514

Doctor of Medicine (M.D.)

Sarah Matson , PA

Physician Assistant - Medical

NPI 1356588479

Physician Assistant

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events
📍
Updated Business Mailing Address April 17, 2025

Registered at PO BOX 7412011, CHICAGO, IL 606742011 (Tel: 3147479889)

📍
Updated Business Mailing Address April 25, 2024

Registered at PO BOX 60352, SAINT LOUIS, MO 631600352 (Tel: 3147479889)

📍
Updated Practice Location November 15, 2021

Registered at 1 BARNES JEWISH HOSPITAL PLZ, DIV SURG TRANSPLANT, SAINT LOUIS, MO 631101003 (Tel: 3147479889)

📍
Updated Business Mailing Address November 15, 2021

Registered at 660 S EUCLID AVE, MSC 8109-05-06, SAINT LOUIS, MO 631101010 (Tel: 3143622280)

👤
Provider Name / Credentials Updated November 15, 2021

Recorded as GREGORY MARTENS, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) November 15, 2021

Surgery (License #2021016714 in MO)

NPI Profile Active June 28, 2012

NPI status registered as active in NPPES database

📍
Updated Practice Location June 28, 2012

Registered at 545 BARNHILL DR, EMERSON HALL 203, INDIANAPOLIS, IN 462025112 (Tel: 3172745771)

📍
Updated Business Mailing Address June 28, 2012

Registered at 402 E NEW YORK ST, APT 400, INDIANAPOLIS, IN 462024646

👤
Provider Name / Credentials Updated June 28, 2012

Recorded as GREGORY MARTENS, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 28, 2012

Student in an Organized Health Care Education/Training Program (License #11016843A in IN)

🟢
Initial NPI Registration & Enumeration June 28, 2012

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1316201940
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 28, 2012
Last Update: April 17, 2025
Sole Proprietor: No

Mailing Address

Po Box 7412011

Chicago, IL 606742011

Phone: 3147479889

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.