Mark Operario, M.D.
NPI 1720099344 · Family Medicine Physician · Columbia, LA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Operario, M.D. is a Family Medicine Physician provider in Columbia, LA (NPI 1720099344).
Provider details
- NPI number
- 1720099344
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD11362R (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
685 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 570 | $46 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 77 | $122 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 38 | $76 |
Typical Medicare-allowed amounts for these services range $46–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 205 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Potassium Chloride | 965 | 172 |
| Amlodipine Besylate | 676 | 131 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 642 | 86 |
| Gabapentin | 630 | 110 |
| Metoprolol Succinate | 604 | 104 |
| Rosuvastatin Calcium | 599 | 104 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Operario's NPI number?
- Mark Operario's National Provider Identifier (NPI) is 1720099344, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Operario's specialty?
- Mark Operario is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Operario located?
- Mark Operario's practice location on file with NPPES is 412 Main Street, Columbia, LA 71418.
- What is Mark Operario's phone number?
- The practice phone number listed in the NPPES registry for Mark Operario is (318) 649-6111.
- Does Mark Operario accept Medicare?
- Mark Operario is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Operario's NPI active?
- Yes — Mark Operario's NPI (1720099344) 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.