Mark Jordan Weisberg, M.D.
Internal Medicine Physician · Brownsville, TX
Mark Jordan Weisberg, M.D. is an internal medicine physician with a practice address in Brownsville, Texas, and NPI 1568690279, issued on Jul 1, 2009. Check the license (Texas P1947, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Jordan Weisberg
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- P1947 TX
Self-reported in NPPES; status is on the state search - Practice location
- 100 E Alton Gloor Blvd, Brownsville, TX 78526
- Phone
- (956) 518-1016
- Enumerated
- Jul 1, 2009
- Record last updated
- May 8, 2025
- Fax
- (956) 372-1717
- Medicaid ID
- 177525601 TX
- Medicare enrollment
- Enrolled (PECOS I20120821001014); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 100 E Alton Gloor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica AmaroPharmacist1730070491
- Oscar Aramburo, NP-CFamily Nurse Practitioner1669992673
- Hector Arredondo Nino, MDInternal Medicine Physician1558940221
- Rusty Beltran, NPCritical Care Medicine (Internal Medicine) Physician1659229128
- Shanna CoxAnesthesiology Physician1487911160
- Frances Crouse, CRNACertified Registered Nurse Anesthetist1003842600
Verify Mark Jordan Weisberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P1947Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average internal medicine physician in 2024
5,588 Medicare Part D claims for 536 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 131 claims were for opioids.
Most prescribed
- Atorvastatin Calcium237 claims
- Eliquis183 claims
- Losartan Potassium179 claims
- Furosemide161 claims
- Amlodipine Besylate158 claims
- Donepezil Hcl138 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 4 group practices
- Bhs Physicians Network, IncHarlingen, TX
- Femi Layiwola MD PABrownsville, TX
- Lakeway Medical Clinic LLCLakeway, TX
- Wandw Medical Consulting PLLCHarlingen, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Jordan Weisberg among 9,175 internal medicine physician records in Texas
Mark Jordan Weisberg, 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 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2004 among the 6,088 with a school on file
- Record last updated2025 · 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).
37 internal medicine physician records list a practice address in Brownsville
They are 37 of the 1,671 NPPES records with a practice address in Brownsville, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Brownsville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ricardo Adames, M.D.Brownsville, TX 785261306806468
- Hector Arredondo Nino, MDBrownsville, TX 785261558940221
- Christian Ellis, M.D.Brownsville, TX 785261477724888
- Lilia Hernandez, M.D.Brownsville, TX 785261477785897
- Femi Layiwola, MDBrownsville, TX 785261396826855
- Dylan Lopez, MDBrownsville, TX 785261386264125
- Yanira Martinez, MDBrownsville, TX 785261457446288
- Kirk Smith, MDBrownsville, TX 785261497125215
Common questions
What is Mark Jordan Weisberg, M.D.'s NPI number?
Mark Jordan Weisberg, M.D.'s National Provider Identifier (NPI) is 1568690279, issued on Jul 1, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jordan Weisberg, M.D. located?
The NPPES record lists a practice address at 100 E Alton Gloor Blvd, Brownsville, TX, 78526. Phone: (956) 518-1016. Providers update this record themselves, so call before visiting.
How can I verify Mark Jordan Weisberg, M.D.'s license?
NPPES lists Texas license number P1947, 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 Mark Jordan Weisberg, M.D. prescribe under Medicare Part D?
In 2024, Mark Jordan Weisberg, M.D. had 5,588 Medicare Part D claims for 536 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.