NPPES file of Aug 9, 2026

Moo J. Chung, M.D.

Internal Medicine Physician · Katy, TX

Moo J. Chung, M.D. is an internal medicine physician with a practice address in Katy, Texas, and NPI 1306846977, issued on Jul 26, 2005. Check the license (Texas L4888, 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
1306846977
Name
Moo J. Chung
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
L4888 TX
Self-reported in NPPES; status is on the state search
Practice location
1331 W. Grand Parkway North, Katy, TX 77493
Phone
(281) 392-8620
Enumerated
Jul 26, 2005
Record last updated
Dec 17, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(281) 392-2258
Medicaid ID
156722401 TX
Medicare enrollment
Enrolled (PECOS I20100611000405); accepts Medicare assignment
Medical or professional school
University Of Oklahoma College Of Medicine, 1999
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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8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →

Also registered at 1331 W. Grand Parkway North

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

  1. Viswanath Kalapatapu, M.D.Internal Medicine Physician1972549061
  2. Mukesh Mehta, M.D.Internal Medicine Physician1558361188
  3. David Reininger, M.D.Internal Medicine Physician1306846043
  4. Ramon Solis, M.D.Internal Medicine Physician1427058171

Verify Moo J. Chung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license L4888    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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2.1 times the Medicare Part D claims of the average internal medicine physician in 2024

6,744 Medicare Part D claims for 549 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 135 claims were for opioids.

  1. Moo Chung6,744
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium409 claims
  2. Levothyroxine Sodium390 claims
  3. Rosuvastatin Calcium279 claims
  4. Amlodipine Besylate268 claims
  5. Losartan Potassium247 claims
  6. Omeprazole184 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.

Industry payments in 2024: $1,580.91

78 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Moo Chung$1,580.91
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Katy Internal Medicine Associates, L.L.PKaty, TX

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

Moo J. Chung among 9,175 internal medicine physician records in Texas

Moo J. Chung, M.D. 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 91% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated1999 · median 2004 among the 6,088 with a school on file
  • Record last updated2010 · 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).

54 internal medicine physician records list a practice address in Katy

They are 54 of the 5,078 NPPES records with a practice address in Katy, and 9,175 internal medicine physician records in Texas.

All 9,175 in Texas → Every provider in Katy → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Nadia Abbasi, M.D.Katy, TX 774931184825689
  2. James Carroll, MDKaty, TX 774931649293689
  3. Viswanath Kalapatapu, M.D.Katy, TX 774931972549061
  4. Carson Lo, MDKaty, TX 774931164483293
  5. Mukesh Mehta, M.D.Katy, TX 774931558361188
  6. Prem PatelKaty, TX 774931912876475
  7. David Reininger, M.D.Katy, TX 774931306846043
  8. Ramon Solis, M.D.Katy, TX 774931427058171

Common questions

What is Moo J. Chung, M.D.'s NPI number?

Moo J. Chung, M.D.'s National Provider Identifier (NPI) is 1306846977, issued on Jul 26, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Moo J. Chung, M.D. located?

The NPPES record lists a practice address at 1331 W. Grand Parkway North, Katy, TX, 77493. Phone: (281) 392-8620. Providers update this record themselves, so call before visiting.

How can I verify Moo J. Chung, M.D.'s license?

NPPES lists Texas license number L4888, 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 Moo J. Chung, M.D. prescribe under Medicare Part D?

In 2024, Moo J. Chung, M.D. had 6,744 Medicare Part D claims for 549 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.