Allison Nielsen, MS
NPI 1578404083 · Obstetrics & Gynecology Physician · Saginaw, MI
Allison Nielsen, MS is a Obstetrics & Gynecology Physician provider in Saginaw, MI (NPI 1578404083).
Provider details
- NPI number
- 1578404083
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MS
- Sex
- Female
- Sole proprietor
- No
- License
- 4351056084 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2026-04-01
- Last updated
- 2026-04-30
- Certified
- 2026-04-30
Frequently asked questions
- What is Allison Nielsen's NPI number?
- Allison Nielsen's National Provider Identifier (NPI) is 1578404083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Nielsen's specialty?
- Allison Nielsen is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Allison Nielsen located?
- Allison Nielsen's practice location on file with NPPES is 1000 Houghton Ave, Saginaw, MI 48602-5303.
- What is Allison Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Allison Nielsen is (989) 774-7547.
- Is Allison Nielsen's NPI active?
- Yes — Allison Nielsen's NPI (1578404083) is active in the NPPES registry as of the last update on 2026-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.