Sybil HallmanMD
Obstetrics & Gynecology·Madison, WI
Sybil Hallman, MD is an Obstetrics & Gynecology provider in Madison, WI, as of July 2026.
- NPI1518594993
- Registered2020
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Sybil Hallman at a glance
- Provider
- Sybil Hallman
- Credential
- MD
- Specialty
- Obstetrics & Gynecology
- Procedures
- Obstetrics & Gynecology CPT codes
- Location
- Madison, WI
- NPI registered
- 2020
- NPI
- 1518594993
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Sybil Hallman practice?
Sybil Hallman, MD is based in Madison, WI. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Sybil Hallman's NPI number?
Sybil Hallman's National Provider Identifier (NPI) is 1518594993, registered in 2020. Specialty on record: Obstetrics & Gynecology; credential MD.
How many Obstetrics & Gynecology providers in Wisconsin work at ambulatory surgery centers?
94 Obstetrics & Gynecology surgeons and proceduralists in Wisconsin are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Sybil Hallman among them. The Wisconsin Obstetrics & Gynecology directory lists each one by city with credential, NPI, and center affiliations.
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