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

Individual provider Internal Medicine Physician · NPI 1881037307

Dr. Calen Marshall Frolkis, MD practises Internal Medicine in Cleveland, Ohio. Qualified in 2013, 13 years ago. Practices with The Metrohealth System, a 1,163-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
13
Licensed in
OH
In the registry since
2013
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

2500 Metrohealth Dr
Cleveland, OH 44109-1900
Phone: (216) 778-2273
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 35129163 (OH)

Record details

NPI number1881037307
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 15, 2013
Last updated in NPPESOctober 25, 2016

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice The Metrohealth System — 1163 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 patients80
Services billed 218 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 The Metrohealth System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1163 clinicians in the practice; 12 are shown here.

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