Spencer Gantz
Obstetrics & Gynecology Physician · Appleton, WI
Spencer Gantz is an obstetrics & gynecology physician with a practice address in Appleton, Wisconsin, and NPI 1639600547, issued on Mar 22, 2017. Check the license (Wisconsin 70641-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Spencer Gantz
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 70641-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1818 N Meade St Ste 330, Appleton, WI 54911
- Phone
- (920) 749-4000
- Enumerated
- Mar 22, 2017
- Entity
- Type 1 · individual
Also registered at 1818 N Meade St Ste 330
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nichol Frank, PA-CPhysician Assistant1952338790
- Kerri GuillenSurgical Technologist1902662299
- Maria JonesOther Specialist/Technologist1225896178
Verify Spencer Gantz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 70641-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
40% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
113 Medicare Part D claims for 35 beneficiaries, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Myrbetriq25 claims
- Estradiol22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $237.12
10 payments, mostly food and beverage; the largest payer was Daiichi Sankyo Inc.. The 20,757 providers of this specialty with any payment received $1,147.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- Womens Health Specialists SCAppleton, WI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Obstetrics & Gynecology Physician providers in Wisconsin
There are 788 obstetrics & gynecology physician records in Wisconsin.
Other obstetrics & gynecology physician records in Wisconsin
- Tahmina Aafreen, M.D.Watertown, WI1972580140
- Samir Abadeer, MDWausau, WI1700984556
- Leslie Abitz, MDSheboygan, WI1093723645
- Bruce Abrams, MDRhinelander, WI1710927413
- Ernesto Acosta, MDAppleton, WI1386773208
- Nichole Adami, M.D.Elkhorn, WI1972997344
- Shant Adamian, DOMilwaukee, WI1952861668
- Tamara Adducci, MDMilwaukee, WI1083939367
- Maya Adler, MD, MPHMadison, WI1801598933
- Enrique Africano, MDAshland, WI1184617862
Common questions
What is Spencer Gantz's NPI number?
Spencer Gantz's National Provider Identifier (NPI) is 1639600547, issued on Mar 22, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Spencer Gantz located?
The NPPES record lists a practice address at 1818 N Meade St Ste 330, Appleton, WI, 54911. Phone: (920) 749-4000. Providers update this record themselves, so call before visiting.
How can I verify Spencer Gantz's license?
NPPES lists Wisconsin license number 70641-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Spencer Gantz prescribe under Medicare Part D?
In 2024, Spencer Gantz had 113 Medicare Part D claims for 35 beneficiaries; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.