Mary Elizabeth Holzer
- Medicare services, 2024
- 421
- Medicare patients, 2024
- 126
- Part D claims, 2024
- 2,566
- Hospital affiliations
- 5
- Industry payments
- $1,407
- Practice address
- 1415 Tulane Ave, New Orleans, LA 70112
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tulane Inpatient Rehab Center - Unit
Acute Care Hospital-Unit · New Orleans, Louisiana
Find Mary Holzer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Mary Elizabeth Holzer is an internist in New Orleans, Louisiana
Mary Holzer practices at Tulane Inpatient Rehab Center - Unit in New Orleans, Louisiana.
Mary Holzer's NPI, 1437546116, was assigned on April 21, 2015. Mary Holzer graduated from Louisiana State University School of Medicine in New Orleans in 2015. Mary Holzer holds Louisiana license 312613.
- NPI
- 1437546116NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466736749
- NPI enumeration date
- April 21, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Elizabeth Holzer practices at Tulane Inpatient Rehab Center - Unit in New Orleans, Louisiana
Mary Holzer's primary practice is Tulane Inpatient Rehab Center - Unit, at 1415 Tulane Ave, New Orleans, LA 70112.
- Tulane Inpatient Rehab Center - Unit1415 Tulane Ave, New Orleans, LA 70112
Source: Dmand AI Affiliation Data
Mary Elizabeth Holzer is affiliated with 7 sites of care and 1 medical group
Mary Holzer's primary practice is Tulane Inpatient Rehab Center - Unit in New Orleans, Louisiana. Mary Holzer is also affiliated with Ochsner Medical Center - New Orleans. The medical group on file is East Jefferson Physicians Group. Dmand AI also links Mary Holzer to 3 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mary Elizabeth Holzer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Holzer practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tulane Inpatient Rehab Center - Unit | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary Elizabeth Holzer is one of 1,571 internists in Louisiana
Internal medicine is Mary Holzer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Mary Holzer is licensed in Louisiana.
Specialties and state licenses
- Internal medicine, LouisianaPrimary
Internists near Mary Holzer
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Mary Elizabeth Holzer billed Medicare for 421 services in 2024
CMS data shows 421 Medicare services from Mary Holzer across 10 procedure codes in 2024, for 126 Medicare patients. Medicare paid $30,473 for them. Every service was in an office.
Mary Holzer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1882024: 23424%
- Other services
- 2023: 272024: 91237%
- Lab and pathology
- 2023: 282024: 74164%
- Tests and treatments
- 2023: 02024: 22
Mary Holzer compared with the Louisiana median for internists, 2024
- Mary Holzer
- Louisiana median
- Medicare services
- 421vs 421Close to median
- Medicare patients
- 126vs 16021% below
- Part D claims
- 1,879vs 4084.6 times
Medians across 1,561 internists in Louisiana with Dmand AI profiles that report each measure.
Mary Holzer's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Mary Elizabeth Holzer treated 126 Medicare patients in 2024, average age 75
CMS counts 126 Medicare patients who saw Mary Holzer in 2024. The largest group is 65 to 74, with 59 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.14, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mary Holzer's median patient age at 59, with 64% women.
Mary Holzer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mary Holzer's Medicare patients by sex, 2024
- Women7660%
- Men5040%
Chronic conditions among Mary Holzer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis40%
- Ischemic heart disease35%
- Chronic kidney disease29%
- Diabetes29%
- Anxiety25%
- Mood disorders25%
Share of Medicare patients with each condition. A patient can have several.
Mary Holzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary Elizabeth Holzer wrote 2,566 Medicare Part D claims in 2024
In 2024, Mary Holzer wrote 2,566 Medicare Part D claims for 356 patients. 86% of them were for generic drugs. CMS names the drug for 1,879 of them, across 59 drugs with 11 or more claims each, at $73,065 in total drug cost. In 2023, CMS named 684 claims across 35 drugs.
Mary Holzer's Part D claims by kind of drug, 2024
- Generic2,198 claims86%
- Brand-name356 claims14%
- Other12 claims0%
Mary Holzer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Mary Holzer's Part D claims, 2024
- Antibiotics3%76 of 2,566 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6842024: 1,879175%
Drugs named by CMS: 59 in 2024, 35 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Mary Elizabeth Holzer takes part in Medicare
Mary Holzer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mary Elizabeth Holzer received $1,407 in industry payments from 2019 to 2025
CMS Open Payments shows 77 general payments to Mary Holzer from 22 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $264.
General payments to Mary Holzer by program year, 2019 to 2025
Companies that paid Mary Holzer the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mary Elizabeth Holzer graduated from Louisiana State University School of Medicine in New Orleans
Mary Holzer graduated from Louisiana State University School of Medicine in New Orleans in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mary Elizabeth Holzer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Mary Elizabeth Holzer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mary Elizabeth Holzer's NPI number?
Mary Elizabeth Holzer's NPI number is 1437546116. It was assigned on April 21, 2015, and it is active in the NPI Registry.
What does Mary Elizabeth Holzer specialize in?
Mary Elizabeth Holzer is an internist in New Orleans, Louisiana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Mary Elizabeth Holzer practice?
Mary Holzer practices at 1415 Tulane Ave, New Orleans, LA 70112. Mary Holzer's primary practice is Tulane Inpatient Rehab Center - Unit in New Orleans, Louisiana. Dmand AI also links Mary Holzer to 3 hospitals, 1 group practice or clinic and 1 home health agency.
What is Mary Elizabeth Holzer's medical license number?
Mary Holzer holds Louisiana license 312613.
Which hospitals is Mary Elizabeth Holzer affiliated with?
Mary Holzer is affiliated with Ochsner Medical Center - New Orleans. Dmand AI links Mary Holzer to 4 more hospitals.
What medical group is Mary Elizabeth Holzer part of?
Mary Holzer is linked to East Jefferson Physicians Group.
Does Mary Elizabeth Holzer accept Medicare?
Yes. CMS data shows Mary Holzer billed Medicare for 421 services in 2024, and Mary Holzer accepts Medicare assignment.
How many Medicare patients does Mary Elizabeth Holzer see?
CMS counts 126 Medicare patients who saw Mary Holzer in 2024, with an average age of 75.
What services does Mary Elizabeth Holzer bill to Medicare?
In 2024, Mary Holzer's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Where did Mary Elizabeth Holzer go to medical school?
Mary Holzer graduated from Louisiana State University School of Medicine in New Orleans in 2015.
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What drugs does Mary Elizabeth Holzer prescribe most?
In 2024 Medicare Part D data, Mary Holzer's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Mary Elizabeth Holzer received payments from drug or device companies?
CMS Open Payments shows $1,407 in general payments to Mary Holzer from 22 companies from 2019 to 2025. The largest total came from Novo Nordisk Inc.
How long has Mary Elizabeth Holzer been practicing?
Mary Holzer graduated from medical school in 2015, 11 years ago.
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