Gwen Herzog, RN
Family Nurse Practitioner · Watertown, WI
Gwen Herzog, RN is a family nurse practitioner with a practice address in Watertown, Wisconsin, and NPI 1467832667, issued on Jun 2, 2015. Check the license (Wisconsin 7630-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gwen Herzog
- Credential
- RN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 7630-33 WI
191155 WI
Self-reported in NPPES; status is on the state search - Practice location
- 903 Harvey Ave, Watertown, WI 53094
- Phone
- (920) 248-1723
- Enumerated
- Jun 2, 2015
- Record last updated
- Apr 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180212000692); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,814 in Wisconsin → Look up another NPI →
Verify Gwen Herzog in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 7630-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13.1 times the Medicare Part D claims of the average family nurse practitioner in 2024
17,138 Medicare Part D claims for 1,132 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 525 claims were for opioids.
Most prescribed
- Atorvastatin Calcium779 claims
- Levothyroxine Sodium610 claims
- Sertraline Hcl601 claims
- Furosemide582 claims
- Omeprazole573 claims
- Amlodipine Besylate535 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.
Bills Medicare through 2 group practices
- Maple Medical SCWaukesha, WI
- Oak Medical SCElkhorn, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gwen Herzog among 2,814 family nurse practitioner records in Wisconsin
Gwen Herzog, RN is one of 2,814 family nurse practitioner records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 34% of them.
- NPI issued2015 · 34% of these records are older, 62% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2016 · median 2019 among the 1,740 with a school on file
- Record last updated2017 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 family nurse practitioner records list a practice address in Watertown
They are 16 of the 366 NPPES records with a practice address in Watertown, and 2,814 family nurse practitioner records in Wisconsin.
All 2,814 in Wisconsin → Every provider in Watertown → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Amber Hendriksen, NPWatertown, WI 530941881244358
- Catherine Onsrud, FNPWatertown, WI 530941902981673
- Nancy Ryan, APNPJohnson Creek, WI 530941780752832
- Cherri Schleicher, APNPWatertown, WI 530941851350383
- David Smiley, APNPWatertown, WI 530941720709751
- Kathryn Spors, APRN, FNPJohnson Creek, WI 530941952743072
- Jody Burri, APNPWaldo, WI 530931063024495
- Jane Kassens, APRNWest Bend, WI 530951578731899
Common questions
What is Gwen Herzog, RN's NPI number?
Gwen Herzog, RN's National Provider Identifier (NPI) is 1467832667, issued on Jun 2, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Gwen Herzog, RN located?
The NPPES record lists a practice address at 903 Harvey Ave, Watertown, WI, 53094. Phone: (920) 248-1723. Providers update this record themselves, so call before visiting.
How can I verify Gwen Herzog, RN's license?
NPPES lists Wisconsin license number 7630-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Gwen Herzog, RN prescribe under Medicare Part D?
In 2024, Gwen Herzog, RN had 17,138 Medicare Part D claims for 1,132 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.