Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Michael S Firstenberg, MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1912961749

Michael S Firstenberg, MD is a Thoracic Surgery in Aurora, Colorado. Qualified in 1996, 30 years ago. Practices with Saint Alphonsus Regional Medical Center Inc, a 673-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Colorado, Idaho, Nevada and Ohio.

Years since qualifying
30
Licensed in
CO, ID, NV, OH
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1444 S Potomac St Ste 200
Aurora, CO 80012-4509
Phone: (303) 226-4650
Fax: (303) 751-6069
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1055 N Curtis Rd, Boise, ID 83706-1309 — (208) 302-0130
  • 7190 S Cimarron Rd, Las Vegas, NV 89113-2171 — (702) 675-3240

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 0059627 (CO)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 35074025 (OH)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 22431 (NV)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 5371563 (ID)

Record details

NPI number1912961749
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2006
Last updated in NPPESJuly 8, 2025
Certification dateJuly 8, 2025
Mailing address525 E Market St, Po Box 2090, Akron, OH 44304-1619

Medicare enrollment

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

Medicare specialtyTHORACIC SURGERY
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Saint Alphonsus Regional Medical Center Inc — 673 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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