Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Douglas Eugene Hayes, DO

Individual provider Internal Medicine Physician · NPI 1497252415

Dr. Douglas Eugene Hayes, DO practises Internal Medicine in Butte, Montana. Graduated from Pacific NW Un of Hs, Col of Osteopathic Medicine in 2018, 8 years ago. Practices with South Sound Inpatient Physicians PLLC, a 427-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Montana and Washington.

Years since qualifying
8
Trained at
Pacific NW Un of Hs, Col of Osteopathic Medicine
Licensed in
MT, WA
In the registry since
2018
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

400 S Clark St
Butte, MT 59701-2328
Phone: (406) 723-2500
Fax: (406) 723-2584
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 603 S Chestnut St, Ellensburg, WA 98926-3875 — (303) 390-1940
  • 1415 E Kincaid St, Mount Vernon, WA 98274-4126 — (360) 416-5750

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 173316 (MT)
Internal Medicine Physician Taxonomy 207R00000X · Licence OP61019828 (WA)
Hospitalist Physician Taxonomy 208M00000X · Licence OP61019828 (WA)

Record details

NPI number1497252415
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 6, 2018
Last updated in NPPESJuly 22, 2026
Certification dateJuly 22, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolPACIFIC NW UN OF HS, COL OF OSTEOPATHIC MEDICINE
Graduated 2018 (8 years in practice)
Group practice South Sound Inpatient Physicians Pllc — 427 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients316
Services billed 939 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at South Sound Inpatient Physicians PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 427 clinicians in the practice; 12 are shown here.

Other providers in Butte