Shari K. Marx, MD
Internal Medicine Physician · Helena, MT
Shari K. Marx, MD is an internal medicine physician with a practice address in Helena, Montana, and NPI 1659363786, issued on Aug 16, 2005. Check the license (Montana 8650, as entered in NPPES) on the Montana Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Shari K. Marx
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 8650 MT
Self-reported in NPPES; status is on the state search - Practice location
- 3330 Ptarmigan LN, Helena, MT 59602
- Phone
- (406) 442-3570
- Enumerated
- Aug 16, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (406) 795-7910
- Medicaid ID
- 0037740 MT
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 in Montana → Look up another NPI →
Also registered at 3330 Ptarmigan LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Abraham, NP-CNurse Practitioner1902027436
- Alison AmyFamily Nurse Practitioner1083231005
- William Batey, M.D.Family Medicine Physician1477656288
- Laura Bennett, P.A.Medical Physician Assistant1023010717
- Ashley Berkram, PACPhysician Assistant1891983458
- John Bohler, M.D.Gastroenterology Physician1871543280
Verify Shari K. Marx in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 8650Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Shari K. Marx among 324 internal medicine physician records in Montana
Shari K. Marx, MD is one of 324 internal medicine physician records with a practice address in Montana. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileNo · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 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 207R00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 internal medicine physician records list a practice address in Helena
They are 16 of the 1,591 NPPES records with a practice address in Helena, and 324 internal medicine physician records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 324 in Montana → Every provider in Helena → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daniel Hesskamp, MDHelena, MT 596021144221037
- Eric Thomas, M.D.Helena, MT 596021528378072
- Scott Woller, M.D.Ft Harrison, MT 596021508966326
- Faust Alvarez, MDHelena, MT 596011962516070
- Jeannie Brandt, M.D.Helena, MT 596011669531638
- Tracy Dill, MDHelena, MT 596011043311673
- William Fernandez, M.D.Helena, MT 596011104805662
- Andrew Fisher, DOHelena, MT 596011104576867
Common questions
What is Shari K. Marx, MD's NPI number?
Shari K. Marx, MD's National Provider Identifier (NPI) is 1659363786, issued on Aug 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Shari K. Marx, MD located?
The NPPES record lists a practice address at 3330 Ptarmigan LN, Helena, MT, 59602. Phone: (406) 442-3570. Providers update this record themselves, so call before visiting.
How can I verify Shari K. Marx, MD's license?
NPPES lists Montana license number 8650, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.