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

John Daniel Herlihy IV, MD

Individual provider Gastroenterology Physician · NPI 1245625151

John Daniel Herlihy IV, MD is a Gastroenterology in Cedar Rapids, Iowa. Graduated from University of Texas Medical School at San Antonio in 2015, 11 years ago. Practices with Mercy Medical Center, a 303-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
11
Trained at
University of Texas Medical School at San Antonio
Licensed in
IA
In the registry since
2015
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

701 10th St SE
Cedar Rapids, IA 52403-1292
Phone: (319) 369-4542
Fax: (319) 369-4543
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD-53981 (IA)

Record details

NPI number1245625151
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2015
Last updated in NPPESAugust 14, 2025
Certification dateAugust 14, 2025
Mailing address701 10th St Se, Cedar Rapids, IA 52403-1251

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2015 (11 years in practice)
Group practice Mercy Medical Center — 303 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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