SPENCER RILEY GANTZ
NPI 1639600547
Obstetrics & Gynecology in Appleton, WI

Active since March 22, 2017PECOS EnrolledAccepts Medicare Assignment
1818 N MEADE ST STE 330, APPLETON, WI 54911(920) 749-4000 Get Directions Write a Review

NPPES record last updated: November 21, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 21, 2024, Mar 22, 2017 (2 updates tracked since 2017).

About Spencer Riley Gantz NPPES

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

SPENCER RILEY GANTZ (NPI 1639600547) is an individual obstetrics & gynecology provider in Appleton, Wisconsin, licensed in Wisconsin (70641-20) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Ascension Ne Wisconsin - St Elizabeth Campus, and maintains a secondary practice location in Milwaukee.

NPPES Registry Identity

NPI1639600547
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameSPENCER RILEY GANTZ
Location Address1818 N MEADE ST STE 330Appleton, WI 54911-3454
Mailing Address1818 N Meade St Ste 330Appleton, WI 54911-3454
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 22, 2017
Last NPPES UpdateNovember 21, 20242 updates tracked since enumeration
NPPES CertifiedNovember 21, 2024
NPI 1639600547 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License Licensed in WI · 70641-20
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1818 N MEADE ST STE 330, Appleton, WI 54911

Secondary Practice Location 1

Location 19200 W Wisconsin AveMilwaukee, WI 53226-3522 · Phone (414) 805-6600

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Spencer Riley Gantz is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759611239
PECOS Enrollment IDI20210728002398
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension NE Wisconsin - St Elizabeth Campus

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520009
Location1506 S Oneida StAppleton, WI 54915 · Outagamie County
Emergency services Birthing friendly

Thedacare Regional Med Ctr - Neenah

Acute Care Hospitals · Neenah, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520045
Location130 2nd StNeenah, WI 54956 · Winnebago County
Emergency services Birthing friendly

Thedacare Regional Medical Center - Appleton Inc

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520160
Location1818 N Meade StAppleton, WI 54911 · Outagamie County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54911 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

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

Specialist/Technologist, Other
1818 N MEADE ST STE 330
APPLETON, WI 54911
Specialist/Technologist, Other (Surgical Technologist)
1818 N MEADE ST STE 330
APPLETON, WI 54911
Physician Assistant
1818 N MEADE ST STE 330
APPLETON, WI 54911

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 Spencer Gantz's NPI number?

The NPI number for Spencer Gantz is 1639600547. It was assigned to this individual provider in the NPPES registry on March 22, 2017.

Where is Spencer Gantz located?

Spencer Gantz practices at 1818 N Meade St Ste 330, Appleton, WI 54911. The listed phone number is (920) 749-4000.

What is Spencer Gantz's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Spencer Gantz enrolled in Medicare?

Yes. Spencer Gantz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Spencer Gantz accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list Spencer Gantz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Spencer Gantz affiliated with any hospitals?

According to CMS data, Spencer Gantz is affiliated with Ascension NE Wisconsin - St Elizabeth Campus, Thedacare Regional Med Ctr - Neenah and Thedacare Regional Medical Center - Appleton Inc.

When was this NPI record last updated?

The NPPES record for Spencer Gantz was last updated on November 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.