Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Internal Medicine - Nephrology Specialists in Tyler, TX

Browse 18 Internal Medicine - Nephrology providers listed in NPPES with a practice address in Tyler, Texas.

18 Healthcare Providers

How Tyler compares with the U.S.

Tyler has 16 clinicians in Internal Medicine - Nephrology per 100,000 residents, 4.1 times the U.S. rate of 4.0.

That is 18 active clinicians in Internal Medicine - Nephrology with a practice address in Tyler, for a population of 109,215.

The Texas rate is 3.8 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine - Nephrology in Tyler listed in the CMS Medicare file (12 of 12) accept Medicare assignment. That is similar to the Texas share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

92% of clinicians in Internal Medicine - Nephrology in Tyler listed in the CMS Medicare file (11 of 12) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Texas share of 47%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine - Nephrology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Nephrology practitioners in Tyler, TX

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Tyler, TX
Part B Lab & Imaging Eligible 13 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 13 HHA Ordering Eligible
Showing 1โ€“18 of 18 providers
With recent CMS data first, then Aโ€“Z

Dr. Nabeel K Ahmed , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1003965906
View Full Profile

Dr. Corey D Ball , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1346433216
View Full Profile

Dr. James R Cotton , MD

Internal Medicine - Nephrology

Active NPI Status
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1841349875
View Full Profile

Dr. Stefanie M Diaz , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1689723637
View Full Profile

Dr. Mingiziem Emiru , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1023167095
View Full Profile

Dr. Roy D Gerard , MD

Internal Medicine - Nephrology

Active NPI Status
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1922157809
View Full Profile

Dr. Alpesh R Jethva , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1679622567
View Full Profile

Dr. Madeline Jimenez-Torres , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 75701
Phone: 9035955486
NPI Identifier 1689952509
View Full Profile

Dr. Rudrick Villoso Ledesma , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1306125836
View Full Profile

Dr. Agnes Edith Owuor Obita-Ounda , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1639590227
View Full Profile

Dr. Aideloje A. Onime , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1972642965
View Full Profile

Dr. Charles O Orji , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1033268628
View Full Profile

Dr. Osiyemi O Osinowo , MD

Internal Medicine - Nephrology

Active NPI Status
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1962765024
View Full Profile

Dr. Ifeatu Uchenna Oti , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1003087388
View Full Profile

Dr. Stephen D Pamatmat , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1184773780
View Full Profile

Dr. Alyssa Weyer , DO

Internal Medicine - Nephrology

Active NPI Status
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1598386039
View Full Profile

Dr. Ingeborg Anna Loewenstein , MD

Internal Medicine - Nephrology

Active NPI Status
11937 Us Highway 271, Tyler, TX 757083154
Phone: 9038773451
NPI Identifier 1407845522
View Full Profile

Dr. Thomas Lowery , MD

Internal Medicine - Nephrology

Active NPI Status
1133 Medical Dr, Tyler, TX 757012130
Phone: 9035955486
NPI Identifier 1245389139
View Full Profile

Frequently Asked Questions about Internal Medicine - Nephrology in Tyler

How do I check a Internal Medicine - Nephrology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Texas licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.