Marta Mortensen, MD
NPI 1538112883 · Family Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marta Mortensen, MD is a Family Medicine Physician provider in Saint Louis, MO (NPI 1538112883).
Provider details
- NPI number
- 1538112883
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 102738 (MO)
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
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
- 2006-05-18
- Last updated
- 2013-02-26
Frequently asked questions
- What is Marta Mortensen's NPI number?
- Marta Mortensen's National Provider Identifier (NPI) is 1538112883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marta Mortensen's specialty?
- Marta Mortensen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marta Mortensen located?
- Marta Mortensen's practice location on file with NPPES is 8793 Watson Rd, Saint Louis, MO 63119-5111.
- What is Marta Mortensen's phone number?
- The practice phone number listed in the NPPES registry for Marta Mortensen is (314) 961-0900.
- Does Marta Mortensen accept Medicare?
- Marta Mortensen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marta Mortensen's NPI active?
- Yes — Marta Mortensen's NPI (1538112883) is active in the NPPES registry as of the last update on 2013-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.