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Roy Hammer, M.D.
NPI 1659556629 · Psychiatry Physician · Austin, TX
Roy Hammer, M.D. is a Psychiatry Physician provider in Austin, TX (NPI 1659556629).
Provider details
- NPI number
- 1659556629
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- E8534 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
1315 W 6th St
Austin, TX 78703-5210
Phone: (512) 415-8848
Street-level locationGet directions
Mailing address
4832 Twin Valley Dr
Austin, TX 78731-3548
Registry dates
- Enumerated
- 2008-01-08
- Last updated
- 2008-01-08
Frequently asked questions
- What is Roy Hammer's NPI number?
- Roy Hammer's National Provider Identifier (NPI) is 1659556629, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Hammer's specialty?
- Roy Hammer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Hammer located?
- Roy Hammer's practice location on file with NPPES is 1315 W 6th St, Austin, TX 78703-5210.
- What is Roy Hammer's phone number?
- The practice phone number listed in the NPPES registry for Roy Hammer is (512) 415-8848.
- Is Roy Hammer's NPI active?
- Yes — Roy Hammer's NPI (1659556629) is active in the NPPES registry as of the last update on 2008-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.