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

Individual provider Internal Medicine Physician · NPI 1952345324

Dr. Mario F Guillen, MD practises Internal Medicine in Wellington, Florida. Qualified in 1991, 35 years ago. Practices with Accountable Care Hospitalist Group, a 113-clinician group and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
35
Licensed in
FL
In the registry since
2006
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

10115 Forest Hill Blvd Ste 104
Wellington, FL 33414-3105 Not confirmed with CMS for 15 years — call before visiting
Phone: (561) 793-1117
Fax: (561) 793-1762
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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 ME84093 (FL)
Pain Medicine Physician Taxonomy 208VP0000X · Licence ME 84093 (FL)

Record details

NPI number1952345324
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 16, 2006
Last updated in NPPESSeptember 15, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Accountable Care Hospitalist Group — 113 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients660
Services billed 1,062 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

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. Those with a page here are linked.

Colleagues at Accountable Care Hospitalist Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 113 clinicians in the practice; 12 are shown here.

Other providers in Wellington