Howard R. Marcus, MD
Internal Medicine Physician · Austin, TX
Howard R. Marcus, MD is an internal medicine physician with a practice address in Austin, Texas, and NPI 1255347514, issued on Jul 31, 2006. Check the license (Texas G1709, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Howard R. Marcus
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G1709 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6835 Austin Center Blvd, Austin, TX 78731
- Phone
- (512) 346-6611
- Enumerated
- Jul 31, 2006
- Record last updated
- Apr 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (512) 465-1613
- Medicaid IDs
- 123743005 TX
123743006 TX
110026197 TX
123743003 TX - Medicare enrollment
- Enrolled (PECOS I20071112000310); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1971
- 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 6835 Austin Center Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Howard R. Marcus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license G1709Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
144 Medicare Part D claims for 116 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Paxlovid53 claims
- Amoxicillin-Clavulanate Potass11 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
- Austin Regional Clinic PAAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Howard R. Marcus among 9,175 internal medicine physician records in Texas
Howard R. Marcus, 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
- Graduated1971 · median 2004 among the 6,088 with a school on file
- Record last updated2012 · 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).
606 internal medicine physician records list a practice address in Austin
They are 606 of the 26,585 NPPES records with a practice address in Austin, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Austin → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Erin Amjadi, MDAustin, TX 787311871529115
- Amy Arrant, MDAustin, TX 787311750326419
- Farhana Bashar, MDAustin, TX 787311326090119
- Matthew Benevich, MDAustin, TX 787311710922331
- Lu Ann Bundrant, MDAustin, TX 787311700812989
- Mini Gopalan, M.D.Austin, TX 787311720060932
- Grace Grant-Jennings, M.D.Austin, TX 787311003816422
- Ross Hemphill, M.D.Austin, TX 787311568490308
Common questions
What is Howard R. Marcus, MD's NPI number?
Howard R. Marcus, MD's National Provider Identifier (NPI) is 1255347514, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Howard R. Marcus, MD located?
The NPPES record lists a practice address at 6835 Austin Center Blvd, Austin, TX, 78731. Phone: (512) 346-6611. Providers update this record themselves, so call before visiting.
How can I verify Howard R. Marcus, MD's license?
NPPES lists Texas license number G1709, 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 Howard R. Marcus, MD prescribe under Medicare Part D?
In 2024, Howard R. Marcus, MD had 144 Medicare Part D claims for 116 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.