NPPES file of Aug 9, 2026

Gregory N. Nelson, M.D.

Orthopaedic Surgery Physician · Bridgeton, MO

Gregory N. Nelson, M.D. is an orthopaedic surgery physician with a practice address in Bridgeton, Missouri, and NPI 1114174265, issued on Aug 20, 2008. Check the license (Missouri 2017006909, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114174265
Name
Gregory N. Nelson
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License numbers
2017006909 MO
49237 AZ
25MA09367900 NJ
MD448629 PA
Self-reported in NPPES; status is on the state search
Practice location
12349 DE Paul Dr Ste 100, Bridgeton, MO 63044
Phone
(314) 291-7900
Enumerated
Aug 20, 2008
Record last updated
Nov 19, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicaid ID
PENDING AZ
Medicare enrollment
Enrolled (PECOS I20170331000739); accepts Medicare assignment
Medical or professional school
Yale University School Of Medicine, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest orthopaedic surgery physician records → All 514 in Missouri → Look up another NPI →

Also registered at 12349 DE Paul Dr Ste 100

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Bokermann, PAPhysician Assistant1679968135
  2. Matthew Bruns, CNPNurse Practitioner1447266333
  3. Katherine Burns, M.D.Orthopaedic Surgery Physician1326090515
  4. Paul Diesfeld, PA-CPhysician Assistant1396796041
  5. Crystel Knierim, MDOrthopaedic Surgery Physician1023034857
  6. Kimberly Luu, PAPhysician Assistant1669553590

Verify Gregory N. Nelson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2017006909    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.1 times the Medicare Part D claims of the average orthopaedic surgery physician in 2024

721 Medicare Part D claims for 254 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 353 claims were for opioids.

  1. Gregory Nelson721
  2. Specialty average346

Most prescribed

  1. Oxycodone Hcl165 claims
  2. Celecoxib134 claims
  3. Hydrocodone-Acetaminophen119 claims
  4. Omeprazole37 claims
  5. Diclofenac Sodium35 claims
  6. Acetaminophen-Codeine31 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $270.36

5 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Nelson$270
  2. Specialty average$23,023

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

  1. Orthopedic Associates LLCSaint Louis, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory N. Nelson among 514 orthopaedic surgery physician records in Missouri

Gregory N. Nelson, M.D. is one of 514 orthopaedic surgery physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.

  • NPI issued2008 · 56% of these records are older, 40% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2008 · median 2006 among the 302 with a school on file
  • Record last updated2020 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Missouri

There are 514 orthopaedic surgery physician records in Missouri.

All 514 in Missouri → Every provider in Bridgeton → Orthopaedic Surgery Physician nationwide →

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Katherine Burns, M.D.Bridgeton, MO 630441326090515
  2. Crystel Knierim, MDBridgeton, MO 630441023034857
  3. Fallon Maylack, MDBridgeton, MO 630441184642993
  4. Ryan Pomajzl, M.D., P.T., A.T.,C.Bridgeton, MO 630441508889577
  5. Randall Roush, MDBridgeton, MO 630441255357091
  6. William Schroer, M.D.Bridgeton, MO 630441447202197
  7. Frank Tull, M.D.Bridgeton, MO 630441982702726
  8. Terry Weis, DOBridgeton, MO 630441154347995

Common questions

What is Gregory N. Nelson, M.D.'s NPI number?

Gregory N. Nelson, M.D.'s National Provider Identifier (NPI) is 1114174265, issued on Aug 20, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Gregory N. Nelson, M.D. located?

The NPPES record lists a practice address at 12349 DE Paul Dr Ste 100, Bridgeton, MO, 63044. Phone: (314) 291-7900. Providers update this record themselves, so call before visiting.

How can I verify Gregory N. Nelson, M.D.'s license?

NPPES lists Missouri license number 2017006909, 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.

How much does Gregory N. Nelson, M.D. prescribe under Medicare Part D?

In 2024, Gregory N. Nelson, M.D. had 721 Medicare Part D claims for 254 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.