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Active NPI 1023166840 Individual Practitioner Male Practitioner

Dr. David Andrew Mark , MD

Internal Medicine • Hardin, MT

Professional Overview & Biography Verified Profile Summary

Dr. David Mark, MD is a registered healthcare professional specializing in Internal Medicine in Hardin, MT. Practice services are available at 402 N CENTER AVE under active NPI credentials.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with straightforward or low-level medical decision making, if using time, at least, hospital discharge day management. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

402 N Center Ave

Hardin, MT 590341808

Telephone 4066554103
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Hardin, MT

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 22.6 Yrs
Regional Practice Density
3 Specialists

Practicing in Hardin, MT (336 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
59.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2021)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
59 19 $176.47 $71.80

Medical Specialties & State Licenses

CMS Verified: 2026-07-27
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MT MED-PHYS-LIC-12540

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Family Medicine

NUCC Taxonomy Code: 207Q00000X

State License MT MED-PHYS-LIC-12540

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Pediatrics

NUCC Taxonomy Code: 208000000X

State License MT MED-PHYS-LIC-12540

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Secondary Practice Locations

10 West 4th Street

Hardin, MT 590341804

Phone: 4066239330

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events
📍
Updated Practice Location March 18, 2026

Registered at 402 N CENTER AVE, HARDIN, MT 590341808 (Tel: 4066554103)

📍
Updated Business Mailing Address March 18, 2026

Registered at 402 N CENTER AVE, HARDIN, MT 590341808 (Tel: 4066554103)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 18, 2026

Family Medicine (License #MED-PHYS-LIC-12540 in MT)

NPI Profile Active October 20, 2011

NPI status registered as active in NPPES database

📍
Updated Practice Location October 20, 2011

Registered at 10 WEST 4TH STREET, HARDIN, MT 590341804 (Tel: 4066239330)

📍
Updated Business Mailing Address October 20, 2011

Registered at RR1 BOX 1211D, HARDIN, MT 590349721 (Tel: 4066239330)

👤
Provider Name / Credentials Updated October 20, 2011

Recorded as DAVID MARK, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 20, 2011

Internal Medicine (License #12450 in MT)

🟢
Initial NPI Registration & Enumeration January 08, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1023166840
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 08, 2007
Last Update: July 27, 2026
Sole Proprietor: No

Mailing Address

402 N Center Ave

Hardin, MT 590341808

Phone: 4066554103

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.