Dr. Mark Urtal Liong, MD
- Medicare services, 2024
- 934
- Medicare patients, 2024
- 245
- Part D claims, 2024
- 1,355
- MIPS score, 2024
- 95
- Hospital affiliations
- 4
- Practice address
- 1900 S Jackson Rd, Mcallen, TX 78503
- Practice phone
- Call (956) 968-1895
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Weslaco Renal Center
Mcallen, Texas
Find Dr. Liong'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.
Dr. Mark Urtal Liong is a nephrologist in Mcallen, Texas
Dr. Liong practices at Weslaco Renal Center in Mcallen, Texas.
Dr. Liong's NPI, 1346422078, was assigned on December 5, 2007. Dr. Liong graduated from Cebu Institute of Medicine in 2004. Dr. Liong's Texas license number on file is P4673.
- NPI
- 1346422078NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547392995
- NPI enumeration date
- December 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (956) 968-1895
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Urtal Liong practices at Weslaco Renal Center in Mcallen, Texas
Dr. Liong's primary practice is Weslaco Renal Center, at 1900 S Jackson Rd, Mcallen, TX 78503 in Hidalgo County. The practice phone is (956) 968-1895.
- Weslaco Renal Center1900 S Jackson Rd, Mcallen, TX 78503 · Hidalgo CountyPhone(956) 968-1895
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Urtal Liong is affiliated with 10 sites of care and 1 medical group
Dr. Liong's primary practice is Weslaco Renal Center in Mcallen, Texas. Dr. Liong is also affiliated with DHR Health. The medical group on file is South Texas Kidney Specialists. Dmand AI also links Dr. Liong to 3 more hospitals, 4 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Urtal Liong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liong practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Weslaco Renal Center | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Urtal Liong is one of 1,045 nephrologists in Texas
Nephrology is Dr. Liong's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Liong is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Liong's licenses on file in 3 states: Texas, Rhode Island and Ohio.
Specialties and state licenses
- Nephrology, TexasPrimary
- Rhode Island license
- Ohio license
Clinical focus
Dmand AI lists chronic kidney disease and fluid and electrolyte imbalances among the conditions Dr. Liong treats.
Nephrologists near Dr. Liong
Counts of nephrologists 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
Dr. Mark Urtal Liong billed Medicare for 934 services in 2024
CMS data shows 934 Medicare services from Dr. Liong across 7 procedure codes in 2024, for 245 Medicare patients. Medicare paid $132,865 for them.
Dr. Liong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7092024: 57319%
- Tests and treatments
- 2023: 4242024: 36115%
Where Dr. Liong's Medicare services took place, 2024
- In an office40143%
- In a facility53357%
Dr. Liong compared with the Texas median for nephrologists, 2024
- Dr. Liong
- Texas median
- Medicare services
- 934vs 1,04811% below
- Medicare patients
- 245vs 27712% below
- Part D claims
- 1,226vs 75862% above
Medians across 1,017 nephrologists in Texas with Dmand AI profiles that report each measure.
Dr. Liong'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Liong and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Urtal Liong treated 245 Medicare patients in 2024, average age 71
CMS counts 245 Medicare patients who saw Dr. Liong in 2024. The largest group is 75 to 84, with 70 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 52% are also on Medicaid. Their average risk score is 5.98, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Liong's median patient age at 69, with 49% women.
Dr. Liong's Medicare patients by age, 2024
Dr. Liong's Medicare patients by sex, 2024
- Women11647%
- Men12953%
Chronic conditions among Dr. Liong's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease59%
- Heart failure53%
- Arthritis41%
- Mood disorders32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Liong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Urtal Liong wrote 1,355 Medicare Part D claims in 2024
In 2024, Dr. Liong wrote 1,355 Medicare Part D claims for 221 patients. 59% of them were for generic drugs. CMS names the drug for 1,226 of them, across 20 drugs with 11 or more claims each, at $1,131,448 in total drug cost. In 2023, CMS named 1,121 claims across 17 drugs.
Dr. Liong's Part D claims by kind of drug, 2024
- Generic797 claims59%
- Brand-name558 claims41%
Dr. Liong'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 Dr. Liong's Part D claims, 2024
- Antibiotics1%13 of 1,355 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: 1,1212024: 1,2269%
Drugs named by CMS: 20 in 2024, 17 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
Dr. Mark Urtal Liong scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Liong for performance year 2024, reported as part of a group. Dr. Liong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Liong's MIPS scores, performance year 2024
- 95of 100Final score
- 80of 100Quality
- 96of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark Urtal Liong received $5,180 in industry payments from 2016 to 2025
CMS Open Payments shows 275 general payments to Dr. Liong from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Akebia Therapeutics Inc paid the most, $1,305.
General payments to Dr. Liong by program year, 2016 to 2025
General payments to Dr. Liong by kind, 2016 to 2025
- Food and beverage$5,06998%
- Education$1102%
Companies that paid Dr. Liong the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Urtal Liong graduated from Cebu Institute of Medicine
Dr. Liong graduated from Cebu Institute of Medicine in 2004.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Mark Urtal Liong accepts plans from 21 insurance carriers
Dr. Liong is in network with 21 carriers, including Aetna, United Healthcare and HCSC. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Cigna
- Elevance
- +13 more carriersWith a free account
Plan types Dr. Liong accepts, by number of carriers
- PPO13
- HMO10
- Medicare10
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark Urtal Liong'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. Mark Urtal Liong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark Urtal Liong's NPI number?
Dr. Mark Urtal Liong's NPI number is 1346422078. It was assigned on December 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Urtal Liong?
Dr. Mark Urtal Liong is a nephrologist in Mcallen, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Mark Urtal Liong practice?
Dr. Liong practices at 1900 S Jackson Rd, Mcallen, TX 78503. Dr. Liong's primary practice is Weslaco Renal Center in Mcallen, Texas. Dmand AI also links Dr. Liong to 3 hospitals, 4 dialysis centers and 1 group practice or clinic.
What is Dr. Mark Urtal Liong's office phone number?
The practice phone on file for Dr. Liong is (956) 968-1895.
What is Dr. Mark Urtal Liong's medical license number?
Dr. Liong's Texas license number on file is P4673, one of the licenses on file in 3 states.
Which states has Dr. Mark Urtal Liong been licensed in?
Dmand AI has state licenses on file for Dr. Liong in Texas (2012 to 2025), Rhode Island (2011 to 2014) and Ohio (2007 to 2012).
Which hospitals is Dr. Mark Urtal Liong affiliated with?
Dr. Liong is affiliated with DHR Health. Dmand AI links Dr. Liong to 3 more hospitals.
What medical group is Dr. Mark Urtal Liong part of?
Dr. Liong is linked to South Texas Kidney Specialists.
Does Dr. Mark Urtal Liong accept Medicare?
Yes. CMS data shows Dr. Liong billed Medicare for 934 services in 2024, and Dr. Liong accepts Medicare assignment.
What is Dr. Mark Urtal Liong's MIPS score?
Dr. Liong's MIPS final score for performance year 2024 is 95 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Mark Urtal Liong see?
CMS counts 245 Medicare patients who saw Dr. Liong in 2024, with an average age of 71.
Is Dr. Mark Urtal Liong board certified?
Yes. Dr. Liong is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mark Urtal Liong bill to Medicare?
In 2024, Dr. Liong's most billed Medicare services were hospital inpatient care (99232), dialysis (90960) and hospital inpatient care (99233).
Where did Dr. Mark Urtal Liong go to medical school?
Dr. Liong graduated from Cebu Institute of Medicine in 2004.
What drugs does Dr. Mark Urtal Liong prescribe most?
In 2024 Medicare Part D data, Dr. Liong's most prescribed drugs by claims were Sevelamer Carbonate, Auryxia and Nifedipine ER.
Has Dr. Mark Urtal Liong received payments from drug or device companies?
CMS Open Payments shows $5,180 in general payments to Dr. Liong from 18 companies from 2016 to 2025. The largest total came from Akebia Therapeutics Inc.
How long has Dr. Mark Urtal Liong been practicing?
Dr. Liong graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Mark Urtal Liong accept?
Dr. Liong is in network with 21 carriers, including Aetna, United Healthcare and HCSC. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
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