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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. DON RICHARD JANCZAK PHARMD BCPS
NPI 1558356998
Pharmacist - Pharmacotherapy in Janesville, WI

Active since September 13, 2005
1000 MINERAL POINT AVE, JANESVILLE, WI 53548(608) 756-6664(608) 756-6580 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Mr. Don Richard Janczak Pharmd Bcps NPPES

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

MR. DON RICHARD JANCZAK PHARMD BCPS (NPI 1558356998) is an individual pharmacotherapy provider in Janesville, Wisconsin, licensed in Wisconsin (10119-040) and active in the NPI registry since September 2005.

NPPES Registry Identity

NPI1558356998
Entity TypeIndividualMale
Primary Taxonomy1835P1200X
Provider Legal NameMR. DON RICHARD JANCZAKCredential: PHARMD BCPS
Location Address1000 MINERAL POINT AVEJanesville, WI 53548-2940
Mailing AddressS34w31341 London DrWaukesha, WI 53189-9064 · (262) 968-9770 · Fax (608) 756-6580
Phone(608) 756-6664
Fax(608) 756-6580
Sole ProprietorNo
Enumeration DateSeptember 13, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1558356998 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPharmacist · PharmacotherapyPharmacy Service Providers
Taxonomy Code1835P1200X
License✔ Licensed in WI · 10119-040
Definition
A licensed pharmacist who has demonstrated specialized knowledge and skill in optimizing pharmacotherapeutic care of patients, by developing, implementing, monitoring, and modifying complex treatment plans, providing advanced level education and consultation, and collaborating with other health professionals in the management of therapy.
1000 MINERAL POINT AVE, Janesville, WI 53548
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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.

BENJAMIN C. MILLER PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6508
KARINA LAURA PAULIUS QUINN MD
Plastic Surgery
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6000
ALESIA L DRAKE DPT, PT
Physical Therapist
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6842
PAULINE R CASS PHARMD
Pharmacist
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6000
KAREN SAUNDERS OT
Occupational Therapist
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6000
DR. MERLE S RUST MD
Neurological Surgery
1000 MINERAL POINT AVE, MERCY WEST NEUROSURGERY
JANESVILLE, WI 53548
Rock County (608) 756-6826
DR. MICHAEL V COOGAN MD
Emergency Medicine (Medical Toxicology)
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6000
CHRISTOPHER B GOODAVISH PA
Physician Assistant
1000 MINERAL POINT AVE
JANESVILLE, WI 53548
Rock County (608) 756-6868

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 Don Janczak's NPI number?

The NPI number for Don Janczak is 1558356998. It was assigned to this individual provider in the NPPES registry on September 13, 2005.

Where is Don Janczak located?

Don Janczak practices at 1000 Mineral Point Ave, Janesville, WI 53548. The listed phone number is (608) 756-6664.

What is Don Janczak's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacotherapy, with taxonomy code 1835P1200X.

When was this NPI record last updated?

The NPPES record for Don Janczak was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.