Frederick Gremmels, D.O.
NPI 1720156896 · Family Medicine Physician · Watertown, WI
Frederick Gremmels, D.O. is a Family Medicine Physician provider in Watertown, WI (NPI 1720156896).
Provider details
- NPI number
- 1720156896
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20398 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Frederick Gremmels's NPI number?
- Frederick Gremmels's National Provider Identifier (NPI) is 1720156896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Gremmels's specialty?
- Frederick Gremmels is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Gremmels located?
- Frederick Gremmels's practice location on file with NPPES is 127 Hospital Dr, Watertown, WI 53098-3303.
- What is Frederick Gremmels's phone number?
- The practice phone number listed in the NPPES registry for Frederick Gremmels is (920) 261-8500.
- Is Frederick Gremmels's NPI active?
- Yes — Frederick Gremmels's NPI (1720156896) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.