Alan Detwiler, MD
NPI 1871597211 · Internal Medicine Physician · Watertown, WI
Alan Detwiler, MD is a Internal Medicine Physician provider in Watertown, WI (NPI 1871597211).
Provider details
- NPI number
- 1871597211
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 20862 (WI)
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
21 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
- 2005-06-13
- Last updated
- 2015-10-29
Frequently asked questions
- What is Alan Detwiler's NPI number?
- Alan Detwiler's National Provider Identifier (NPI) is 1871597211, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Detwiler's specialty?
- Alan Detwiler is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Detwiler located?
- Alan Detwiler's practice location on file with NPPES is 125 Hospital Dr, Watertown, WI 53098-3303.
- What is Alan Detwiler's phone number?
- The practice phone number listed in the NPPES registry for Alan Detwiler is (920) 262-4210.
- Is Alan Detwiler's NPI active?
- Yes — Alan Detwiler's NPI (1871597211) is active in the NPPES registry as of the last update on 2015-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.