IndividualActive
Joan Crennan, MD
NPI 1679666952 · Internal Medicine Physician · Appleton, WI
Joan Crennan, MD is a Internal Medicine Physician provider in Appleton, WI (NPI 1679666952).
Provider details
- NPI number
- 1679666952
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 39221 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
1665 N Mccarthy Rd Apt 10
Appleton, WI 54913-5458
Phone: (505) 321-4094
Street-level locationGet directions
Mailing address
Po Box 8003
Appleton, WI 54912-8003
Registry dates
- Enumerated
- 2006-10-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joan Crennan's NPI number?
- Joan Crennan's National Provider Identifier (NPI) is 1679666952, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Crennan's specialty?
- Joan Crennan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joan Crennan located?
- Joan Crennan's practice location on file with NPPES is 1665 N Mccarthy Rd Apt 10, Appleton, WI 54913-5458.
- What is Joan Crennan's phone number?
- The practice phone number listed in the NPPES registry for Joan Crennan is (505) 321-4094.
- Is Joan Crennan's NPI active?
- Yes — Joan Crennan's NPI (1679666952) 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.