Gail Kallas, MD
NPI 1609894666 · Internal Medicine Physician · Milwaukee, WI
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gail Kallas, MD is a Internal Medicine Physician provider in Milwaukee, WI (NPI 1609894666).
Provider details
- NPI number
- 1609894666
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 39896-020 (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
- 2006-07-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gail Kallas's NPI number?
- Gail Kallas's National Provider Identifier (NPI) is 1609894666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gail Kallas's specialty?
- Gail Kallas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gail Kallas located?
- Gail Kallas's practice location on file with NPPES is 5000 W National Ave, Milwaukee, WI 53295-0001.
- What is Gail Kallas's phone number?
- The practice phone number listed in the NPPES registry for Gail Kallas is (414) 384-2000.
- Does Gail Kallas accept Medicare?
- Gail Kallas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gail Kallas's NPI active?
- Yes — Gail Kallas's NPI (1609894666) 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.