Tim Castro, M.D.
Internal Medicine Physician · Tyler, TX
Tim Castro, M.D. is an internal medicine physician with a practice address in Tyler, Texas, and NPI 1447418538, issued on May 27, 2008. Check the license (Texas N0679, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tim Castro
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- N0679 TX
Self-reported in NPPES; status is on the state search - Practice location
- 912 S Fleishel Ave, Tyler, TX 75701
- Phone
- (903) 592-6901
- Enumerated
- May 27, 2008
- Record last updated
- Apr 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090715000534); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2006
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 912 S Fleishel Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly Brown, FNPNurse Practitioner1083084537
- Cynthia Chaney, NPFamily Nurse Practitioner1114137262
- Luis Destarac, M.D.Pulmonary Disease Physician1477513927
- Jordan Dickerson, NPNurse Practitioner1093608515
- Susan Gallien, APRN NP-CFamily Nurse Practitioner1831354752
- George Gass, M.D.Pulmonary Disease Physician1710981196
Verify Tim Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N0679Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
457 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. Brand-name drugs were 11% of claims. 77 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen57 claims
- Ondansetron Hcl25 claims
- Clopidogrel21 claims
- Atorvastatin Calcium17 claims
- Pantoprazole Sodium17 claims
- Amlodipine Besylate16 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.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Etmc Physician Group, Inc.Tyler, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tim Castro among 9,175 internal medicine physician records in Texas
Tim Castro, 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 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2004 among the 6,088 with a school on file
- Record last updated2011 · 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).
146 internal medicine physician records list a practice address in Tyler
They are 146 of the 5,531 NPPES records with a practice address in Tyler, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Tyler → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Yvonne Baum, M.D.Tyler, TX 757011679572614
- Marcus Byrd, M.D.Tyler, TX 757011518930304
- Gene Earl, M.D.Tyler, TX 757011134122567
- Michael Gorby, M.D.Tyler, TX 757011366446049
- James Holleman, M.D.Tyler, TX 757011083692248
- Paul Lim, M.D.Tyler, TX 757011942288634
- Eric Madore, MDTyler, TX 757011982678884
- Aleksandra Olsson-Detwiler, M.D.Tyler, TX 757011740280510
Common questions
What is Tim Castro, M.D.'s NPI number?
Tim Castro, M.D.'s National Provider Identifier (NPI) is 1447418538, issued on May 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Tim Castro, M.D. located?
The NPPES record lists a practice address at 912 S Fleishel Ave, Tyler, TX, 75701. Phone: (903) 592-6901. Providers update this record themselves, so call before visiting.
How can I verify Tim Castro, M.D.'s license?
NPPES lists Texas license number N0679, 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 Tim Castro, M.D. prescribe under Medicare Part D?
In 2024, Tim Castro, M.D. had 457 Medicare Part D claims for 179 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Tim Castro, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.