James G. Marx, M.D.
Pain Medicine (Anesthesiology) Physician · Las Vegas, NV
James G. Marx, M.D. is a pain medicine (anesthesiology) physician with a practice address in Las Vegas, Nevada, and NPI 1922153907, issued on Jan 23, 2007. Check the license (Nevada 6619, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- James G. Marx
- Credential
- M.D.
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License numbers
- 6619 NV
C37925 CA
12694 NE
Self-reported in NPPES; status is on the state search - Practice location
- 608 S Jones Blvd, Las Vegas, NV 89107
- Phone
- (702) 878-4568
- Enumerated
- Jan 23, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 64 in Nevada → Look up another NPI →
Verify James G. Marx in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 6619Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
1,153 Medicare Part D claims for 36 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 638 claims were for opioids.
Most prescribed
- Oxycodone Hcl231 claims
- Fentanyl97 claims
- Morphine Sulfate Er97 claims
- Alprazolam81 claims
- Tizanidine Hcl72 claims
- Methadone Hcl49 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: $251.56
4 payments; by number, the most common kind was food and beverage; the largest payer was Averitas Pharma Inc. The 2,789 providers of this specialty with any payment received $3,225.41 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.
James G. Marx among 64 pain medicine (anesthesiology) physician records in Nevada
James G. Marx, M.D. is one of 64 pain medicine (anesthesiology) physician records with a practice address in Nevada. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 47% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2007 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in Nevada
There are 64 pain medicine (anesthesiology) physician records in Nevada.
All 64 in Nevada → Every provider in Las Vegas → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- Joseph Schifini, M.D.Las Vegas, NV 891061760447999
- Shaan Jaggi, M.D.Las Vegas, NV 891031023465986
- Steven Chinn, M.D.Las Vegas, NV 891021902154305
- Alain Coppel, M.D.Las Vegas, NV 891021316057573
- Javier Garduno, M.D.Las Vegas, NV 891021720141120
- Indervir Grewal, MDLas Vegas, NV 891021366704652
- Steven Kozmary, MDLas Vegas, NV 891021659337459
- Ross Seibel, MDLas Vegas, NV 891021710958699
Common questions
What is James G. Marx, M.D.'s NPI number?
James G. Marx, M.D.'s National Provider Identifier (NPI) is 1922153907, issued on Jan 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James G. Marx, M.D. located?
The NPPES record lists a practice address at 608 S Jones Blvd, Las Vegas, NV, 89107. Phone: (702) 878-4568. Providers update this record themselves, so call before visiting.
How can I verify James G. Marx, M.D.'s license?
NPPES lists Nevada license number 6619, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James G. Marx, M.D. prescribe under Medicare Part D?
In 2024, James G. Marx, M.D. had 1,153 Medicare Part D claims for 36 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. 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.
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.