Robert Aaron Fischer, MBBS
Internal Medicine Physician · Tyler, TX
Robert Aaron Fischer, MBBS is an internal medicine physician with a practice address in Tyler, Texas, and NPI 1386169761, issued on Aug 7, 2017. Check the license (Texas S4760, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert Aaron Fischer
- Credential
- MBBS
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- S4760 TX
57.245120 OH
Self-reported in NPPES; status is on the state search - Practice location
- 1000 S Beckham Ave, Tyler, TX 75701
- Phone
- (903) 590-5612
- Enumerated
- Aug 7, 2017
- Record last updated
- Jan 29, 2026
- Fax
- (903) 535-6884
- Medicare enrollment
- Enrolled (PECOS I20200506001341); 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 1000 S Beckham Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Aaron Fischer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S4760Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
330 Medicare Part D claims for 193 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 29 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass33 claims
- Hydrocodone-Acetaminophen24 claims
- Atorvastatin Calcium20 claims
- Doxycycline Hyclate18 claims
- Methylprednisolone18 claims
- Clopidogrel16 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 2 group practices
- Etmc Physician Group, Inc.Tyler, TX
- Hunt Memorial Hospital DistrictGreenville, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Aaron Fischer among 9,175 internal medicine physician records in Texas
Robert Aaron Fischer, MBBS 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 2017, is newer than 77% of them.
- NPI issued2017 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2016 · median 2004 among the 6,088 with a school on file
- Record last updated2026 · 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 Robert Aaron Fischer, MBBS's NPI number?
Robert Aaron Fischer, MBBS's National Provider Identifier (NPI) is 1386169761, issued on Aug 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Robert Aaron Fischer, MBBS located?
The NPPES record lists a practice address at 1000 S Beckham Ave, Tyler, TX, 75701. Phone: (903) 590-5612. Providers update this record themselves, so call before visiting.
How can I verify Robert Aaron Fischer, MBBS's license?
NPPES lists Texas license number S4760, 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 Robert Aaron Fischer, MBBS prescribe under Medicare Part D?
In 2024, Robert Aaron Fischer, MBBS had 330 Medicare Part D claims for 193 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.