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

Frederick B Hernaez, MD

Individual provider Internal Medicine Physician · NPI 1205498227

Frederick B Hernaez, MD is an Internal Medicine in Marshfield, Wisconsin. Qualified in 2017, 9 years ago. Practices with Mchs Hospitals Inc, a 1,194-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
9
Licensed in
WI
In the registry since
2019
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

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone: (715) 387-5511
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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 74654 (WI)

Record details

NPI number1205498227
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 29, 2019
Last updated in NPPESApril 23, 2024
Certification dateApril 23, 2024
Mailing address1000 N Oak Ave, Marshfield, WI 54449-5703

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice McHs Hospitals Inc — 1194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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