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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JO MERRIWETHER KNATZ MD
NPI 1225031503
Obstetrics & Gynecology - Gynecology in Mesa, AZ

Active since May 31, 2005
4540 E BASELINE RD, STE 115, MESA, AZ 85206(480) 610-5300(480) 610-5340 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Jo Merriwether Knatz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JO MERRIWETHER KNATZ MD (NPI 1225031503) is an individual gynecology provider in Mesa, Arizona, licensed in Arizona (MD16756) and active in the NPI registry since May 2005.

NPPES Registry Identity

NPI1225031503
Entity TypeIndividualFemale
Primary Taxonomy207VG0400X
Provider Legal NameDR. JO MERRIWETHER KNATZCredential: MD
Location Address4540 E BASELINE RD, STE 115Mesa, AZ 85206-4617
Mailing Address4540 E Baseline Rd, Ste 115Mesa, AZ 85206-4617 · (480) 610-5300 · Fax (480) 610-5340
Phone(480) 610-5300
Fax(480) 610-5340
Sole ProprietorNo
Enumeration DateMay 31, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1225031503 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207VG0400X
License✔ Licensed in AZ · MD16756
Definition
A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee
4540 E BASELINE RD, Mesa, AZ 85206
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

THE WELLNESS WAY, INC.
Chiropractor
4540 E BASELINE RD, SUITE 112
MESA, AZ 85206
Maricopa County (480) 272-8944
JO M KNATZ MD PC
Obstetrics & Gynecology (Gynecology)
4540 E BASELINE RD, UNIT 115
MESA, AZ 85206
Maricopa County (480) 985-1093
JEFFERY DEWARD SMITH PA
Physician Assistant (Medical)
4540 E BASELINE RD, SUITE#114
MESA, AZ 85206
Maricopa County (480) 633-0294
DALE W GUTHRIE M.D.
Pediatrics
4540 E BASELINE RD, SUITE 108
MESA, AZ 85206
Maricopa County (480) 892-3880
RANDY H LEAVITT M.D.
Pediatrics
4540 E BASELINE RD, SUITE 108
MESA, AZ 85206
Maricopa County (480) 892-3880
HOMEWOOD FAMILY MEDICINE PLLC
Family Medicine
4540 E BASELINE RD, #113
MESA, AZ 85206
Maricopa County (480) 558-4700
TIMOTHY JACKS D.O.
Pediatrics
4540 E BASELINE RD, SUITE 108
MESA, AZ 85206
Maricopa County (480) 892-3880
WIZE HEALTHCARE LLC
Pain Medicine (Interventional Pain Medicine)
4540 E BASELINE RD, 105
MESA, AZ 85206
Maricopa County (602) 421-2730

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jo Knatz's NPI number?

The NPI number for Jo Knatz is 1225031503. It was assigned to this individual provider in the NPPES registry on May 31, 2005.

Where is Jo Knatz located?

Jo Knatz practices at 4540 E Baseline Rd Ste 115, Mesa, AZ 85206. The listed phone number is (480) 610-5300.

What is Jo Knatz's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecology, with taxonomy code 207VG0400X.

When was this NPI record last updated?

The NPPES record for Jo Knatz was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.