Mark D. Harding, MD
Emergency Medicine Physician · Ronan, MT
Mark D. Harding, MD is an emergency medicine physician with a practice address in Ronan, Montana, and NPI 1821042466, issued on May 19, 2006. Check the license (Montana 8030, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark D. Harding
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 8030 MT
Self-reported in NPPES; status is on the state search - Practice location
- 107 6TH Ave SW, Ronan, MT 59864
- Phone
- (406) 676-4441
- Enumerated
- May 19, 2006
- Record last updated
- Jun 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (406) 676-0835
- Medicaid ID
- 1821042466 MT
- Medicare enrollment
- Enrolled (PECOS I20050908000886); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 243 in Montana → Look up another NPI →
Also registered at 107 6TH Ave SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Adams, PTPhysical Therapist1891122529
- Kevin Adams, PTPhysical Therapist1063849701
- Phillip Anuta, DOEmergency Medicine Physician1396308789
- April CharloFamily Nurse Practitioner1053063008
- Tina Colton, P.T.Physical Therapist1750686929
- Ronald Dean, DOEmergency Medicine Physician1437198074
Verify Mark D. Harding in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 8030Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average emergency medicine physician in 2024
274 Medicare Part D claims for 138 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 41 claims were for opioids.
Most prescribed
- Methylprednisolone19 claims
- Hydrocodone-Acetaminophen18 claims
- Ondansetron Hcl18 claims
- Oxycodone-Acetaminophen18 claims
- Pantoprazole Sodium18 claims
- Ciprofloxacin Hcl13 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.
Bills Medicare through one group practice
- St Johns Lutheran Hospital IncLibby, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark D. Harding among 243 emergency medicine physician records in Montana
Mark D. Harding, MD is one of 243 emergency medicine physician records with a practice address in Montana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1990 · median 2009 among the 144 with a school on file
- Record last updated2013 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 emergency medicine physician records list a practice address in Ronan
They are 10 of the 112 NPPES records with a practice address in Ronan, and 243 emergency medicine physician records in Montana.
All 243 in Montana → Every provider in Ronan → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Phillip Anuta, DORonan, MT 598641396308789
- Ronald Dean, DORonan, MT 598641437198074
- Shane Hill, M.D.Ronan, MT 598641598836850
- Michael Kornish, M.D.Ronan, MT 598641558449124
- Bruce Mikesell, M.D.Ronan, MT 598641528099074
- Joan Nutt, M.D.Ronan, MT 598641972980050
- Alexander Nutt, M.D.Ronan, MT 598641205213394
- Aubree Ruzkowski, D.O.Ronan, MT 598641972860377
Common questions
What is Mark D. Harding, MD's NPI number?
Mark D. Harding, MD's National Provider Identifier (NPI) is 1821042466, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Harding, MD located?
The NPPES record lists a practice address at 107 6TH Ave SW, Ronan, MT, 59864. Phone: (406) 676-4441. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Harding, MD's license?
NPPES lists Montana license number 8030, 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.
How much does Mark D. Harding, MD prescribe under Medicare Part D?
In 2024, Mark D. Harding, MD had 274 Medicare Part D claims for 138 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.