John Mercke, MD
NPI 1821594763 · Family Medicine Physician · Leesville, LA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mercke, MD is a Family Medicine Physician provider in Leesville, LA (NPI 1821594763).
Provider details
- NPI number
- 1821594763
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 328002 (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
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
992 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 Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 455 | $114 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 267 | $109 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 189 | $76 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 68 | $167 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 13 | $77 |
Typical Medicare-allowed amounts for these services range $76–$167 (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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 85 | 85 |
| Cefdinir | 64 | 64 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 33 | 33 |
| Pantoprazole Sodium | 31 | 19 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 26 | 23 |
| Levofloxacin | 25 | 25 |
| Nitroglycerin |
Practice location
Mailing address
Additional practice locations (1)
- 301 4th StAlexandria, LA 71301-8411Phone: (318) 441-1030
Registry dates
- Enumerated
- 2018-03-31
- Last updated
- 2021-10-08
- Certified
- 2021-07-29
Frequently asked questions
- What is John Mercke's NPI number?
- John Mercke's National Provider Identifier (NPI) is 1821594763, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mercke's specialty?
- John Mercke is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Mercke located?
- John Mercke's practice location on file with NPPES is 1020 W Fertitta Blvd, Leesville, LA 71446-4645.
- What is John Mercke's phone number?
- The practice phone number listed in the NPPES registry for John Mercke is (337) 392-6203.
- Does John Mercke accept Medicare?
- John Mercke is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Mercke's NPI active?
- Yes — John Mercke's NPI (1821594763) is active in the NPPES registry as of the last update on 2021-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.