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

Dr. Erich N Marks, MD

Individual provider Anesthesiology Physician · NPI 1891995270

Dr. Erich N Marks, MD practises Anesthesiology in Denver, Colorado. Graduated from University of Louisville School of Medicine in 2011, 15 years ago. Practices with Boulder Valley Anesthesiology, PLLC, a 60-clinician group and accepts Medicare assignment. Licensed in Colorado and Wisconsin.

Years since qualifying
15
Trained at
University of Louisville School of Medicine
Licensed in
CO, WI
In the registry since
2007
Specialties on file
3
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

2045 N Franklin St
Denver, CO 80205-5437
Phone: (303) 338-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 0056056 (CO)
Anesthesiology Physician Taxonomy 207L00000X · Licence 52252 (WI)
Critical Care Medicine (Anesthesiology) Physician Taxonomy 207LC0200X · Licence 52252 (WI)

Record details

NPI number1891995270
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 23, 2007
Last updated in NPPESJune 15, 2021
Certification dateJune 15, 2021

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolUNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Boulder Valley Anesthesiology, Pllc — 60 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients116
Services billed 146 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Boulder Valley Anesthesiology, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 60 clinicians in the practice; 12 are shown here.

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