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Stephen Flach, MD, PHD
NPI 1861683088 · Internal Medicine Physician · Madison, WI
Stephen Flach, MD, PHD is a Internal Medicine Physician provider in Madison, WI (NPI 1861683088).
Provider details
- NPI number
- 1861683088
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 48483-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
Covance
3402 Kinsman Blvd
Madison, WI 53704
Phone: (608) 443-1491
Fax: (608) 661-8169
Approximate (ZIP-level) locationGet directions
Mailing address
Covance
Madison, WI 53704
Registry dates
- Enumerated
- 2007-08-05
- Last updated
- 2007-08-05
Frequently asked questions
- What is Stephen Flach's NPI number?
- Stephen Flach's National Provider Identifier (NPI) is 1861683088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Flach's specialty?
- Stephen Flach is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Flach located?
- Stephen Flach's practice location on file with NPPES is Covance, Madison, WI 53704.
- What is Stephen Flach's phone number?
- The practice phone number listed in the NPPES registry for Stephen Flach is (608) 443-1491.
- Is Stephen Flach's NPI active?
- Yes — Stephen Flach's NPI (1861683088) is active in the NPPES registry as of the last update on 2007-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.