Gregory Martens, MD
Surgery Physician · Saint Louis, MO
Gregory Martens, MD is a surgery physician with a practice address in Saint Louis, Missouri, and NPI 1316201940, issued on Jun 28, 2012. Check the license (Missouri 2021016714, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Gregory Martens
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 2021016714 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 747-9889
- Enumerated
- Jun 28, 2012
- Record last updated
- Apr 17, 2025
- Fax
- (314) 361-4197
- Medicaid ID
- 200096570 MO
- Medicare enrollment
- Enrolled (PECOS I20210707001906); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 714 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Martens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2021016714Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $295.37
4 payments; by number, the most common kind was food and beverage; the largest payer was United Therapeutics Corporation. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Martens among 714 surgery physician records in Missouri
Gregory Martens, MD is one of 714 surgery physician records with a practice address in Missouri. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 57% of them.
- NPI issued2012 · 57% of these records are older, 41% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2012 · median 2006 among the 410 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Missouri
There are 714 surgery physician records in Missouri.
All 714 in Missouri → Every provider in Saint Louis → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- L Brunt, MDSaint Louis, MO 631101992723621
- Bradley Freeman, MDSaint Louis, MO 631101255359980
- William Hawkins, MDSaint Louis, MO 631101538187257
- Eddy Hsueh, MDSaint Louis, MO 631101003910225
- David Jaques, MDSaint Louis, MO 631101093706541
- John Kirby, MDSaint Louis, MO 631101902829823
- Mary Klingensmith, MDSaint Louis, MO 631101184640492
- Benjamin Kozower, MDSaint Louis, MO 631101548283450
Common questions
What is Gregory Martens, MD's NPI number?
Gregory Martens, MD's National Provider Identifier (NPI) is 1316201940, issued on Jun 28, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Martens, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 747-9889. Providers update this record themselves, so call before visiting.
How can I verify Gregory Martens, MD's license?
NPPES lists Missouri license number 2021016714, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Gregory Martens, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.