NPPES file of Aug 9, 2026

Ashley U. So, MD

Internal Medicine Physician · Irving, TX

Ashley U. So, MD is an internal medicine physician with a practice address in Irving, Texas, and NPI 1790719789, issued on Jul 10, 2006. Check the license (Texas L4134, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1790719789
Name
Ashley U. So
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
L4134 TX
Self-reported in NPPES; status is on the state search
Practice location
6750 N Macarthur Blvd, Irving, TX 75039
Phone
(972) 556-1616
Enumerated
Jul 10, 2006
Record last updated
Nov 1, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(972) 556-1740
Medicaid IDs
152234404 TX
152234402 TX
200839302 TX
152234401 TX
Medicare enrollment
Enrolled (PECOS I20090302000073); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 1998
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 6750 N Macarthur Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kristen Carmichael, M.D.Obstetrics & Gynecology Physician1063449411
  2. Jacob Chemmalakuzhy, M.D.Cardiovascular Disease Physician1992723241
  3. Kimberly Chesshir, MDObstetrics & Gynecology Physician1972600583
  4. Rupal Chiniwala, M.D.Internal Medicine Physician1013956408
  5. Whitney Chouteau, D.O.Interventional Pain Medicine Physician1639373129
  6. Susan Clifford, M.D.Pediatrics Physician1568402105

Verify Ashley U. So in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license L4134
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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90% more Medicare Part D claims than the average internal medicine physician in 2024

6,042 Medicare Part D claims for 416 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 55 claims were for opioids.

  1. Ashley So6,042
  2. Specialty average3,176

Most prescribed

  1. Levothyroxine Sodium742 claims
  2. Atorvastatin Calcium407 claims
  3. Simvastatin216 claims
  4. Lisinopril163 claims
  5. Amlodipine Besylate160 claims
  6. Alendronate Sodium138 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Medical Clinic OF North Texas, PLLCIrving, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ashley U. So among 9,175 internal medicine physician records in Texas

Ashley U. So, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 59% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated1998 · median 2004 among the 6,088 with a school on file
  • Record last updated2019 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

98 internal medicine physician records list a practice address in Irving

They are 98 of the 3,532 NPPES records with a practice address in Irving, and 9,175 internal medicine physician records in Texas.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Selim Ahmed, MDIrving, TX 750391508805813
  2. Sumitha Atluri, MDIrving, TX 750391265513923
  3. Pritha Browning, M.D.Irving, TX 750391992723126
  4. Rupal Chiniwala, M.D.Irving, TX 750391013956408
  5. Megan Conoley, M.D.Irving, TX 750391689611485
  6. Bryan Demarie, M.D.Irving, TX 750391225085822
  7. Richard Johnston, M.D.Irving, TX 750391205878477
  8. Murad Jussa, M.D.Irving, TX 750391376593145

Common questions

What is Ashley U. So, MD's NPI number?

Ashley U. So, MD's National Provider Identifier (NPI) is 1790719789, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ashley U. So, MD located?

The NPPES record lists a practice address at 6750 N Macarthur Blvd, Irving, TX, 75039. Phone: (972) 556-1616. Providers update this record themselves, so call before visiting.

How can I verify Ashley U. So, MD's license?

NPPES lists Texas license number L4134, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ashley U. So, MD prescribe under Medicare Part D?

In 2024, Ashley U. So, MD had 6,042 Medicare Part D claims for 416 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.