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

Dr. Melissa Nichole Holtz, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1427254002

Dr. Melissa Nichole Holtz, MD is an Obstetrics/Gynecology in Sioux City, Iowa. Graduated from Medical College of Wisconsin in 2007, 19 years ago. Practices with Siouxland Community Health Center, a 10-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
19
Trained at
Medical College of Wisconsin
Licensed in
IA
In the registry since
2007
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

2730 Pierce St Ste 201
Sioux City, IA 51104-3764
Phone: (712) 277-3141
Fax: (712) 277-2645
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 39393 (IA)

Record details

NPI number1427254002
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 21, 2007
Last updated in NPPESOctober 18, 2022
Certification dateOctober 18, 2022

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2007 (19 years in practice)
Group practice Siouxland Community Health Center — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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