IndividualActive
Nancy Marshall, MD
NPI 1629088679 · Psychiatry Physician · St Clair, MI
Nancy Marshall, MD is a Psychiatry Physician provider in St Clair, MI (NPI 1629088679).
Provider details
- NPI number
- 1629088679
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301051834 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 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
132 Trumbull Street
St Clair, MI 48079
Phone: (810) 329-5340
Fax: (810) 329-8964
Street-level locationGet directions
Mailing address
3171 Conger Street
Port Huron, MI 48060
Registry dates
- Enumerated
- 2006-08-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Nancy Marshall's NPI number?
- Nancy Marshall's National Provider Identifier (NPI) is 1629088679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Marshall's specialty?
- Nancy Marshall is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Marshall located?
- Nancy Marshall's practice location on file with NPPES is 132 Trumbull Street, St Clair, MI 48079.
- What is Nancy Marshall's phone number?
- The practice phone number listed in the NPPES registry for Nancy Marshall is (810) 329-5340.
- Is Nancy Marshall's NPI active?
- Yes — Nancy Marshall's NPI (1629088679) 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.