William Mangan, DO
NPI 1851392195 · Family Medicine Physician · Okemos, MI
William Mangan, DO is a Family Medicine Physician provider in Okemos, MI (NPI 1851392195).
Provider details
- NPI number
- 1851392195
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 5101011930 (MI)
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
20 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
- 2005-08-09
- Last updated
- 2016-07-22
Frequently asked questions
- What is William Mangan's NPI number?
- William Mangan's National Provider Identifier (NPI) is 1851392195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mangan's specialty?
- William Mangan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Mangan located?
- William Mangan's practice location on file with NPPES is 3413 Woods Edge Drive, Okemos, MI 48864-5901.
- What is William Mangan's phone number?
- The practice phone number listed in the NPPES registry for William Mangan is (517) 349-3303.
- Is William Mangan's NPI active?
- Yes — William Mangan's NPI (1851392195) is active in the NPPES registry as of the last update on 2016-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.