Roy David Hammer, M.D.
Psychiatry Physician · Austin, TX
Roy David Hammer, M.D. is a psychiatry physician with a practice address in Austin, Texas, and NPI 1659556629, issued on Jan 8, 2008. Check the license (Texas E8534, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Roy David Hammer
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- E8534 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1315 W 6TH St, Austin, TX 78703
- Phone
- (512) 415-8848
- Enumerated
- Jan 8, 2008
- Record last updated
- Jan 8, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 3,318 in Texas → Look up another NPI →
Verify Roy David Hammer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license E8534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Roy David Hammer among 3,318 psychiatry physician records in Texas
Roy David Hammer, M.D. is one of 3,318 psychiatry physician records with a practice address in Texas. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 49% of them.
- NPI issued2008 · 49% of these records are older, 46% newer
- In a Medicare fileNo · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2008 · 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 2084P0800X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
343 psychiatry physician records list a practice address in Austin
They are 343 of the 26,585 NPPES records with a practice address in Austin, and 3,318 psychiatry physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,318 in Texas → Every provider in Austin → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Robert Cantu, MDAustin, TX 787031891771499
- Virginia Eubanks, M.D.Austin, TX 787031134499106
- Josephine Howard, M.D.Austin, TX 787031538371182
- Stacy Leon, M.D.Austin, TX 787031215213442
- Octavio Martinez, M.D., M.P.H., M.B.A.Austin, TX 787031376520080
- Ghadeer Okayli, MD PSYCHIATRISTAustin, TX 787031194831032
- James Shultz, MDAustin, TX 787031508925504
- Samantha Symons, MDAustin, TX 787031669505566
Common questions
What is Roy David Hammer, M.D.'s NPI number?
Roy David Hammer, M.D.'s National Provider Identifier (NPI) is 1659556629, issued on Jan 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Roy David Hammer, M.D. located?
The NPPES record lists a practice address at 1315 W 6TH St, Austin, TX, 78703. Phone: (512) 415-8848. Providers update this record themselves, so call before visiting.
How can I verify Roy David Hammer, M.D.'s license?
NPPES lists Texas license number E8534, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.