Justin Mercer, PA-C
NPI 1629452495 · Medical Physician Assistant · Terrytown, LA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Mercer, PA-C is a Medical Physician Assistant provider in Terrytown, LA (NPI 1629452495).
Provider details
- NPI number
- 1629452495
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA.200823 (LA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 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
62 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 48 | $100 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 14 | $145 |
Typical Medicare-allowed amounts for these services range $100–$145 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Meloxicam | 52 | 51 |
| Prednisone | 46 | 44 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 45 | 44 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 34 | 25 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 17 | 17 |
| Cephalexin | 15 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$64 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
- 2015-07-12
- Last updated
- 2015-11-09
Frequently asked questions
- What is Justin Mercer's NPI number?
- Justin Mercer's National Provider Identifier (NPI) is 1629452495, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Mercer's specialty?
- Justin Mercer is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Justin Mercer located?
- Justin Mercer's practice location on file with NPPES is 2500 Belle Chasse Hwy, Terrytown, LA 70056-7127.
- What is Justin Mercer's phone number?
- The practice phone number listed in the NPPES registry for Justin Mercer is (504) 392-3131.
- Does Justin Mercer accept Medicare?
- Justin Mercer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Mercer's NPI active?
- Yes — Justin Mercer's NPI (1629452495) is active in the NPPES registry as of the last update on 2015-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.