Mary Mason, MD
NPI 1093844540 · General Practice Physician · Saint Louis, MO
Mary Mason, MD is a General Practice Physician provider in Saint Louis, MO (NPI 1093844540).
Provider details
- NPI number
- 1093844540
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 106125 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-02
- Last updated
- 2009-07-16
Frequently asked questions
- What is Mary Mason's NPI number?
- Mary Mason's National Provider Identifier (NPI) is 1093844540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Mason's specialty?
- Mary Mason is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Mason located?
- Mary Mason's practice location on file with NPPES is 4950 Childrens Pl, Saint Louis, MO 63110-1000.
- What is Mary Mason's phone number?
- The practice phone number listed in the NPPES registry for Mary Mason is (314) 362-3500.
- Is Mary Mason's NPI active?
- Yes — Mary Mason's NPI (1093844540) is active in the NPPES registry as of the last update on 2009-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.