Marlene C. Chang-Brown, MD
Internal Medicine Physician · McAllen, TX
Marlene C. Chang-Brown, MD is an internal medicine physician with a practice address in McAllen, Texas, and NPI 1659471696, issued on Sep 22, 2006. Check the license (Texas J9998, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marlene C. Chang-Brown
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- J9998 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1417 N Ware RD Ste 300, McAllen, TX 78501
- Phone
- (956) 585-4704
- Enumerated
- Sep 22, 2006
- Record last updated
- May 22, 2023
- Fax
- (956) 585-6775
- Medicare enrollment
- Enrolled (PECOS I20100415000964); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 1417 N Ware RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chelsy Cavazos, FNP-BCPrimary Care Nurse Practitioner1750844023
- Dennis Martinez-Garza, AGNP-BCFamily Nurse Practitioner1851892228
- Carolina Mendez, PA-CPhysician Assistant1396097176
Verify Marlene C. Chang-Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J9998Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.0 times the Medicare Part D claims of the average internal medicine physician in 2024
12,741 Medicare Part D claims for 1,377 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,585 claims
- Lisinopril706 claims
- Amlodipine Besylate643 claims
- Metformin Hcl638 claims
- Losartan Potassium635 claims
- Rosuvastatin Calcium528 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
- Wellmed Medical Group PAMcAllen, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marlene C. Chang-Brown among 9,175 internal medicine physician records in Texas
Marlene C. Chang-Brown, 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
- Graduated1987 · median 2004 among the 6,088 with a school on file
- Record last updated2023 · 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).
50 internal medicine physician records list a practice address in McAllen
They are 50 of the 3,518 NPPES records with a practice address in McAllen, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in McAllen → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kimberly AlvarezMcAllen, TX 785011821558842
- Eduardo Aquino, M.D.McAllen, TX 785011669423497
- Jorge Duarte Solis, MDMcAllen, TX 785011083269534
- Khairiya Camilia Haj-Yahya, MDMcAllen, TX 785011811637275
- Belinda Hernandez, MDMcAllen, TX 785011063696359
- Ofelia Rodriguez, M.D.McAllen, TX 785011528010147
- Victoria Rodriguez-Quick, MDMcAllen, TX 785011033747456
- Hiram Tavarez, MDMcAllen, TX 785011023146230
Common questions
What is Marlene C. Chang-Brown, MD's NPI number?
Marlene C. Chang-Brown, MD's National Provider Identifier (NPI) is 1659471696, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marlene C. Chang-Brown, MD located?
The NPPES record lists a practice address at 1417 N Ware RD Ste 300, McAllen, TX, 78501. Phone: (956) 585-4704. Providers update this record themselves, so call before visiting.
How can I verify Marlene C. Chang-Brown, MD's license?
NPPES lists Texas license number J9998, 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 Marlene C. Chang-Brown, MD prescribe under Medicare Part D?
In 2024, Marlene C. Chang-Brown, MD had 12,741 Medicare Part D claims for 1,377 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.