Gary Marklin, M.D.
NPI 1396733416 · Pulmonary Disease Physician · Saint Louis, MO
Gary Marklin, M.D. is a Pulmonary Disease Physician provider in Saint Louis, MO (NPI 1396733416).
Provider details
- NPI number
- 1396733416
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- R3D74 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 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.
$3,072 across 2 records (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
- 2005-10-12
- Last updated
- 2017-03-14
Frequently asked questions
- What is Gary Marklin's NPI number?
- Gary Marklin's National Provider Identifier (NPI) is 1396733416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Marklin's specialty?
- Gary Marklin is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Marklin located?
- Gary Marklin's practice location on file with NPPES is 12700 Southfork Rd, Saint Louis, MO 63128-3201.
- What is Gary Marklin's phone number?
- The practice phone number listed in the NPPES registry for Gary Marklin is (314) 892-6565.
- Is Gary Marklin's NPI active?
- Yes — Gary Marklin's NPI (1396733416) is active in the NPPES registry as of the last update on 2017-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.