William Long, D.O.
NPI 1558357608 · Obstetrics & Gynecology Physician · Cadillac, MI
William Long, D.O. is a Obstetrics & Gynecology Physician provider in Cadillac, MI (NPI 1558357608).
Provider details
- NPI number
- 1558357608
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- WL006859 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2005-09-23
- Last updated
- 2019-01-03
Frequently asked questions
- What is William Long's NPI number?
- William Long's National Provider Identifier (NPI) is 1558357608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Long's specialty?
- William Long is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is William Long located?
- William Long's practice location on file with NPPES is 7800 US 131 S, Cadillac, MI 49601-8437.
- What is William Long's phone number?
- The practice phone number listed in the NPPES registry for William Long is (231) 779-1167.
- Is William Long's NPI active?
- Yes — William Long's NPI (1558357608) is active in the NPPES registry as of the last update on 2019-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.