Frank Wittmaack, M.D.
NPI 1366494676 · Reproductive Endocrinology Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frank Wittmaack, M.D. is a Reproductive Endocrinology Physician provider in Green Bay, WI (NPI 1366494676).
Provider details
- NPI number
- 1366494676
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD046113L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 8901 W Lincoln AveWest Allis, WI 53227-2409Phone: (414) 329-4300Fax: (414) 329-4399
Registry dates
- Enumerated
- 2006-05-16
- Last updated
- 2024-08-19
- Certified
- 2024-08-19
Frequently asked questions
- What is Frank Wittmaack's NPI number?
- Frank Wittmaack's National Provider Identifier (NPI) is 1366494676, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frank Wittmaack's specialty?
- Frank Wittmaack is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Frank Wittmaack located?
- Frank Wittmaack's practice location on file with NPPES is 2845 Greenbrier Rd, Green Bay, WI 54311-6519.
- What is Frank Wittmaack's phone number?
- The practice phone number listed in the NPPES registry for Frank Wittmaack is (920) 288-8500.
- Does Frank Wittmaack accept Medicare?
- Frank Wittmaack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frank Wittmaack's NPI active?
- Yes — Frank Wittmaack's NPI (1366494676) is active in the NPPES registry as of the last update on 2024-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.