John Jennings, MD
NPI 1457389140 · Emergency Medicine Physician · Hattiesburg, MS
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Jennings, MD is a Emergency Medicine Physician provider in Hattiesburg, MS (NPI 1457389140).
Provider details
- NPI number
- 1457389140
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11044 (MS)
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
20 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
858 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 High Level of Medical Decision Making99285 | 443 | $163 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 216 | $7 |
| Critical Care, First 30-74 Minutes99291 | 97 | $196 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 59 | $112 |
| Insertion of Non-Tunneled Central Venous Tube for Infusion (5 Years Or Older)36556 | 18 | $77 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 14 |
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 |
|---|---|---|
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 41 | 38 |
| Diltiazem Hclbrand: Diltiazem 24hr Er (cd) | 32 | — |
| Doxycycline Hyclate | 32 | 32 |
| Methocarbamol | 20 | 18 |
| Cefadroxil | 15 | 15 |
| Cefdinir | 15 | 15 |
| Dexamethasone | 14 | 14 |
| Metoclopramide Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$152 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
- 2006-06-29
- Last updated
- 2010-09-01
Frequently asked questions
- What is John Jennings's NPI number?
- John Jennings's National Provider Identifier (NPI) is 1457389140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Jennings's specialty?
- John Jennings is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Jennings located?
- John Jennings's practice location on file with NPPES is 6051 Highway 49, Hattiesburg, MS 39401-7200.
- What is John Jennings's phone number?
- The practice phone number listed in the NPPES registry for John Jennings is (601) 288-7000.
- Does John Jennings accept Medicare?
- John Jennings is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Jennings's NPI active?
- Yes — John Jennings's NPI (1457389140) is active in the NPPES registry as of the last update on 2010-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.