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DR. GARY LEE GERSTNER M.D.
NPI 1255392056
Internal Medicine - Gastroenterology in Waukesha, WI

Active since March 31, 2006
82.39/100
CMS Quality Rating
1111 DELAFIELD ST, SUITE 212, WAUKESHA, WI 53188(262) 544-8622(262) 544-8630 Get Directions Write a Review

NPPES record last updated: August 12, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gary Lee Gerstner M.d. NPPES

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

DR. GARY LEE GERSTNER M.D. (NPI 1255392056) is an individual gastroenterology provider in Waukesha, Wisconsin, licensed in Wisconsin (23767-020) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1255392056
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. GARY LEE GERSTNERCredential: M.D.
Location Address1111 DELAFIELD ST, SUITE 212Waukesha, WI 53188-3417
Mailing Address1111 Delafield St, Suite 212Waukesha, WI 53188-3417 · (262) 544-8622 · Fax (262) 544-8630
Phone(262) 544-8622
Fax(262) 544-8630
Sole ProprietorNo
Enumeration DateMarch 31, 2006
Last NPPES UpdateAugust 12, 2014
✔ NPI 1255392056 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in WI · 23767-020
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1111 DELAFIELD ST, Waukesha, WI 53188
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Other Identifiers 4

Medicaid30522700WI
Medicare PIN000568085WI
Medicare UPINB53049WI
Medicare PIN100016290WI

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

82.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.88
Promoting Interoperability81
Improvement Activities40
Cost74.38

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.

GREGORY R LOCHEN M.D.
Ophthalmology
1111 DELAFIELD ST, SUITE 312
WAUKESHA, WI 53188
Waukesha County (262) 547-3352
MRS. ALYSSA KATHRYN EISNER PA
Physician Assistant
1111 DELAFIELD ST, SUITE 209
WAUKESHA, WI 53188
Waukesha County (262) 542-0444
CHRISTINA K HILL LAT
Specialist/Technologist (Athletic Trainer)
1111 DELAFIELD ST, STE 120
WAUKESHA, WI 53188
Waukesha County (262) 521-9762
PROHEALTH MEDICAL GROUP INC
Clinic/Center (Radiology)
1111 DELAFIELD ST
WAUKESHA, WI 53188
Waukesha County (262) 928-4300
DR. FRANCESCA JEAN MARTIN D.D.S.
Dentist (General Practice)
1111 DELAFIELD ST, #319
WAUKESHA, WI 53188
Waukesha County (262) 549-3641
MRS. DEBRA SEILER NP
Nurse Practitioner (Family)
1111 DELAFIELD ST, SUITE 215
WAUKESHA, WI 53188
Waukesha County (262) 542-2594
VASAVI KUMAR PA
Physician Assistant
1111 DELAFIELD ST, STE 209
WAUKESHA, WI 53188
Waukesha County (262) 542-0444
MS. ERIN E DOXTATOR PT
Physical Therapist
1111 DELAFIELD ST, SUITE 120
WAUKESHA, WI 53188
Waukesha County (262) 521-9762

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 Gary Gerstner's NPI number?

The NPI number for Gary Gerstner is 1255392056. It was assigned to this individual provider in the NPPES registry on March 31, 2006.

Where is Gary Gerstner located?

Gary Gerstner practices at 1111 Delafield St Suite 212, Waukesha, WI 53188. The listed phone number is (262) 544-8622.

What is Gary Gerstner's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Gary Gerstner was last updated on August 12, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.