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DR. HERBERT KARL MAYER M.D.
NPI 1447225537
Internal Medicine - Gastroenterology in New Orleans, LA

Active since February 22, 2006PECOS Enrolled
2820 NAPOLEON AVENUE, SUITE 720, NEW ORLEANS, LA 70115(504) 896-8670(504) 896-8699 Get Directions Write a Review

NPPES record last updated: October 23, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Herbert Karl Mayer M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. HERBERT KARL MAYER M.D. (NPI 1447225537) is an individual gastroenterology provider in New Orleans, Louisiana, licensed in Louisiana (MD017305) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1447225537
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. HERBERT KARL MAYERCredential: M.D.
Location Address2820 NAPOLEON AVENUE, SUITE 720New Orleans, LA 70115
Mailing Address1111 Medical Center Blvd, Suite S-450Marrero, LA 70072-3151 · (504) 349-6423 · Fax (504) 349-6062
Phone(504) 896-8670
Fax(504) 896-8699
Sole ProprietorNo
Enumeration DateFebruary 22, 2006
Last NPPES UpdateOctober 23, 2012
✔ NPI 1447225537 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in LA · MD017305
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
2820 NAPOLEON AVENUE, New Orleans, LA 70115
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Other Identifiers 3

Medicaid1336009LA
Medicare PIN54799LA
Medicare UPINB65442LA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Herbert Karl Mayer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Herbert Mayer reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ochsner Clinic LLC
Same address
Internal Medicine
2820 NAPOLEON AVE
New Orleans, LA 70115
  • Reassigned Medicare billing, Louisiana enrollment
  • 4,559 clinicians in this Medicare group
NPI 1043780281 (504) 842-5300
Administrators Of The Tulane Education Fund
2.0 mi
Anatomic Pathology & Clinical Pathology
2000 CANAL ST
New Orleans, LA 70112
  • Reassigned Medicare billing, Louisiana enrollment
  • Medicare enrollment name: Administrators Of The Tulane Educational Fund
  • 851 clinicians in this Medicare group
NPI 1790354595 (504) 702-3000
New Orleans Physician Services Inc
4.5 mi
Internal Medicine
4945 LAPALCO BLVD STE 200
Marrero, LA 70072
  • Reassigned Medicare billing, Louisiana enrollment
  • 291 clinicians in this Medicare group
NPI 1396169678 (504) 301-2825
Texas Digestive Disease Consultants PLLC
36 mi
Gastroenterology
131 CHEROKEE ROSE LN
Covington, LA 70433
  • Reassigned Medicare billing, Louisiana enrollment
  • 92 clinicians in this Medicare group
NPI 1295428415 (214) 424-2200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
184 services121 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
116 services86 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
56 services54 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
54 services54 patients
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490
Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.
49 services11 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
43 services43 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.88 typical visit price
range $55.50 – $170.30
Typical copayment $32.22 (range $13.87 – $42.57)
Most-billed visit code 99204
Established Patient
$98.35 typical visit price
range $17.42 – $138.03
Typical copayment $24.58 (range $4.35 – $34.50)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
80%700 patients4/55-star benchmark: 85%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
98%1,786 patients4/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
96%2,126 patients4/55-star benchmark: 100%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
100%359 patients5/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
71%1,187 patients3/55-star benchmark: 99%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
8%503 patients1/55-star benchmark: 90%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
28%1,111 patients2/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 37% · 388 patients
Patients tobacco: 30% · 388 patients
4%26 patients1/55-star benchmark: 98%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
79%1,187 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
15%1,187 patients2/55-star benchmark: 59%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 503 patients
1%503 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHRISTOPHER J WORMUTH MD
Family Medicine
2820 NAPOLEON AVENUE
NEW ORLEANS, LA 70115
Orleans Parish (504) 842-4960
DR. REBEKAH HOPKINS LEMANN M.D.
Internal Medicine (Gastroenterology)
2820 NAPOLEON AVENUE, SUITE 720
NEW ORLEANS, LA 70115
Orleans Parish (504) 896-8670
DR. STEVE FAGAN PRICE JR. M.D.
Internal Medicine (Gastroenterology)
2820 NAPOLEON AVENUE, SUITE 720
NEW ORLEANS, LA 70115
Orleans Parish (504) 896-8670

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Herbert Mayer's NPI number?

The NPI number for Herbert Mayer is 1447225537. It was assigned to this individual provider in the NPPES registry on February 22, 2006.

Where is Herbert Mayer located?

Herbert Mayer practices at 2820 Napoleon Avenue Suite 720, New Orleans, LA 70115. The listed phone number is (504) 896-8670.

What is Herbert Mayer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Herbert Mayer enrolled in Medicare?

Yes. Herbert Mayer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Herbert Mayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Herbert Mayer reassigns Medicare benefits to 4 organizations: Ochsner Clinic LLC (New Orleans, LA), Administrators Of The Tulane Education Fund (New Orleans, LA), New Orleans Physician Services Inc (Marrero, LA) and Texas Digestive Disease Consultants PLLC (Covington, LA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Herbert Mayer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Herbert Mayer was last updated on October 23, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.