Hernan Zamalloa Castro, MD
Internal Medicine Physician · Corpus Christi, TX
Hernan Zamalloa Castro, MD is an internal medicine physician with a practice address in Corpus Christi, Texas, and NPI 1952680282, issued on Aug 4, 2011. Check the license (Texas Q0599, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Hernan Zamalloa Castro
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- Q0599 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3315 S Alameda St, Corpus Christi, TX 78411
- Phone
- (361) 882-3198
- Enumerated
- Aug 4, 2011
- Record last updated
- Jun 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140916001007); 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 3315 S Alameda St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hernan Zamalloa Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q0599Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
346 Medicare Part D claims for 179 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass30 claims
- Amlodipine Besylate21 claims
- Tramadol Hcl21 claims
- Cefuroxime19 claims
- Doxycycline Monohydrate13 claims
- Furosemide13 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
- Hha Hospital Medicine OF Texas PLLCHuntsville, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hernan Zamalloa Castro among 9,175 internal medicine physician records in Texas
Hernan Zamalloa Castro, 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 2011, is newer than 60% of them.
- NPI issued2011 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2003 · median 2004 among the 6,088 with a school on file
- Record last updated2014 · 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).
99 internal medicine physician records list a practice address in Corpus Christi
They are 99 of the 5,600 NPPES records with a practice address in Corpus Christi, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Corpus Christi → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Fatima Bashir, M.D.Corpus Christi, TX 784111093000671
- Johanna Daugherty, M.D.Corpus Christi, TX 784111396058392
- Surendra Dawani, MDCorpus Christi, TX 784111215902432
- Priyank Dhar, MDCorpus Christi, TX 784111285014175
- Natalie Harris, D.O.Corpus Christi, TX 784111003004201
- David Heredia, MDCorpus Christi, TX 784111104980408
- Pavlo Kodak, M.D.Corpus Christi, TX 784111790113918
- Cyril Owusu-Boakye, M.D.Corpus Christi, TX 784111851530455
Common questions
What is Hernan Zamalloa Castro, MD's NPI number?
Hernan Zamalloa Castro, MD's National Provider Identifier (NPI) is 1952680282, issued on Aug 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Hernan Zamalloa Castro, MD located?
The NPPES record lists a practice address at 3315 S Alameda St, Corpus Christi, TX, 78411. Phone: (361) 882-3198. Providers update this record themselves, so call before visiting.
How can I verify Hernan Zamalloa Castro, MD's license?
NPPES lists Texas license number Q0599, 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 Hernan Zamalloa Castro, MD prescribe under Medicare Part D?
In 2024, Hernan Zamalloa Castro, MD had 346 Medicare Part D claims for 179 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.