Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Creticus P Marak, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1215163514

Dr. Creticus P Marak, MD is a Pulmonary Disease in Denver, Colorado. Qualified in 2000, 26 years ago. Practices with Northeastern Health System, a 104-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
26
Licensed in
CO
In the registry since
2009
Specialties on file
2
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

1400 Jackson St
Denver, CO 80206-2761
Phone: (303) 388-4461
Fax: (303) 270-2174
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence 53521 (CO)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 53521 (CO)

Record details

NPI number1215163514
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 2, 2009
Last updated in NPPESJune 30, 2014

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Northeastern Health System — 104 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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