John Marino, M.D.
NPI 1922112523 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Marino, M.D. is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1922112523).
Provider details
- NPI number
- 1922112523
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R2C27 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
915 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 339 | $86 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 258 | $3 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 161 | $3 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 89 | $122 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 68 | $121 |
Typical Medicare-allowed amounts for these services range $3–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 114 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 582 | 167 |
| Amlodipine Besylate | 383 | 104 |
| Levothyroxine Sodium | 336 | 84 |
| Pantoprazole Sodium | 278 | 81 |
| Lisinopril | 273 | 76 |
| Losartan Potassium | 262 | 72 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 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
- 2006-08-19
- Last updated
- 2019-03-27
Frequently asked questions
- What is John Marino's NPI number?
- John Marino's National Provider Identifier (NPI) is 1922112523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Marino's specialty?
- John Marino is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Marino located?
- John Marino's practice location on file with NPPES is 10012 Kennerly Rd, Saint Louis, MO 63128-2197.
- What is John Marino's phone number?
- The practice phone number listed in the NPPES registry for John Marino is (314) 842-5670.
- Does John Marino accept Medicare?
- John Marino is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Marino's NPI active?
- Yes — John Marino's NPI (1922112523) is active in the NPPES registry as of the last update on 2019-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.