Mary Holzer
NPI 1437546116 · Internal Medicine Physician · Covington, LA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Holzer is a Internal Medicine Physician provider in Covington, LA (NPI 1437546116).
Provider details
- NPI number
- 1437546116
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
399 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 160 | $117 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 67 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 59 | $84 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 26 | $16 |
| Administration of Influenza Virus VaccineG0008 | 24 | $30 |
| Urinalysis, Manual Test81002 | 21 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 152 | 65 |
| Levothyroxine Sodium | 111 | 50 |
| Amlodipine Besylate | 95 | 42 |
| Lisinopril | 89 | 38 |
| Hydrochlorothiazide | 73 | 29 |
| Rosuvastatin Calcium | 67 | 28 |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$293 across 16 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
- 2015-04-21
- Last updated
- 2023-02-13
- Certified
- 2023-02-13
Frequently asked questions
- What is Mary Holzer's NPI number?
- Mary Holzer's National Provider Identifier (NPI) is 1437546116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Holzer's specialty?
- Mary Holzer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Holzer located?
- Mary Holzer's practice location on file with NPPES is 130 Lakeview Cir Apt 304, Covington, LA 70433-7512.
- What is Mary Holzer's phone number?
- The practice phone number listed in the NPPES registry for Mary Holzer is (985) 892-6858.
- Does Mary Holzer accept Medicare?
- Mary Holzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Holzer's NPI active?
- Yes — Mary Holzer's NPI (1437546116) is active in the NPPES registry as of the last update on 2023-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.