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DR. MAHMOUD BAYOUMI M.D., M.P.H.
NPI 1023541109
Internal Medicine - Gastroenterology in Knoxville, TN

Active since April 06, 2017PECOS EnrolledAccepts Medicare Assignment
95.69/100
CMS Quality Rating
1930 ALCOA HWY STE A145, KNOXVILLE, TN 37920(865) 305-6570 Get Directions Write a Review

NPPES record last updated: August 11, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 11, 2026, Jul 11, 2023, Oct 1, 2021 and 2 more (5 updates tracked since 2020).

About Dr. Mahmoud Bayoumi M.d., M.p.h. NPPES

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

DR. MAHMOUD BAYOUMI M.D., M.P.H. (NPI 1023541109) is an individual gastroenterology provider in Knoxville, Tennessee, licensed in Tennessee (61454) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Singing River Health System, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1023541109
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MAHMOUD BAYOUMICredential: M.D., M.P.H.
Location Address1930 ALCOA HWY STE A145Knoxville, TN 37920-1500
Mailing Address1930 Alcoa Hwy Ste A145Knoxville, TN 37920-1500 · (865) 305-6570
Phone(865) 305-6570
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateApril 6, 2017
Last NPPES UpdateAugust 11, 20265 updates tracked since enumeration
NPPES CertifiedAugust 11, 2026
✔ NPI 1023541109 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses✔ Licensed in TN · 61454✔ Licensed in VA · 0101290624✔ Licensed in MS · 37499
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 61454 (TN)
1930 ALCOA HWY STE A145, Knoxville, TN 37920
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mahmoud Bayoumi M.d., M.p.h. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8224315072
PECOS Enrollment IDI20210518001849
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

2

Medicare enrollment records show Mahmoud Bayoumi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Health System, Inc
Same address
Plastic Surgery
1930 ALCOA HWY, STE 235
Knoxville, TN 37920
  • Reassigned Medicare billing, Tennessee enrollment
  • 832 clinicians in this Medicare group
NPI 1437460821 (865) 305-4670
Singing River Hospital System
466 mi
Neurological Surgery
3003 SHORTCUT RD
Pascagoula, MS 39567
  • Reassigned Medicare billing, Mississippi enrollment
  • Medicare enrollment name: Singing River Health System
  • 450 clinicians in this Medicare group
NPI 1629288931 (228) 769-0178

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 9

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.

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.
50 services50 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.
48 services47 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
41 services41 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.
38 services38 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
33 services32 patients
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.
14 services13 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Singing River Health System

Acute Care Hospitals · Pascagoula, MS
2/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number250040
Location2809 Denny AvenuePascagoula, MS 39581 · Jackson County
Emergency services Birthing friendly

Singing River Gulfport

Acute Care Hospitals · Gulfport, MS
1/5 CMS rating
OwnershipProprietary
CMS Certification Number250123
Location15200 Community RoadGulfport, MS 39503 · Harrison County
Emergency services

University Health System, Inc

Acute Care Hospitals · Knoxville, TN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number440015
Location1924 Alcoa HighwayKnoxville, TN 37920 · Knox County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37920 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
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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.

95.69/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality85.28
Promoting Interoperability100
Improvement Activities40

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 Mahmoud Bayoumi's NPI number?

The NPI number for Mahmoud Bayoumi is 1023541109. It was assigned to this individual provider in the NPPES registry on April 6, 2017.

Where is Mahmoud Bayoumi located?

Mahmoud Bayoumi practices at 1930 Alcoa Hwy Ste A145, Knoxville, TN 37920. The listed phone number is (865) 305-6570.

What is Mahmoud Bayoumi's specialty?

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

Is Mahmoud Bayoumi enrolled in Medicare?

Yes. Mahmoud Bayoumi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mahmoud Bayoumi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mahmoud Bayoumi reassigns Medicare benefits to 2 organizations: University Health System, Inc (Knoxville, TN) and Singing River Hospital System (Pascagoula, MS). 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 Mahmoud Bayoumi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mahmoud Bayoumi accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 4 other insurers list Mahmoud Bayoumi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mahmoud Bayoumi affiliated with any hospitals?

According to CMS data, Mahmoud Bayoumi is affiliated with Singing River Health System, Singing River Gulfport and University Health System, Inc.

When was this NPI record last updated?

The NPPES record for Mahmoud Bayoumi was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.