Michael Millstone, M.D.
NPI 1891038733 · Psychiatry Physician · Austin, TX
Michael Millstone, M.D. is a Psychiatry Physician provider in Austin, TX (NPI 1891038733).
Provider details
- NPI number
- 1891038733
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
83% 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
Mailing address
Registry dates
- Enumerated
- 2013-03-28
- Last updated
- 2022-10-01
- Certified
- 2022-10-01
Frequently asked questions
- What is Michael Millstone's NPI number?
- Michael Millstone's National Provider Identifier (NPI) is 1891038733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Millstone's specialty?
- Michael Millstone is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Millstone located?
- Michael Millstone's practice location on file with NPPES is 4131 Spicewood Springs Rd Ste H2, Austin, TX 78759-8659.
- What is Michael Millstone's phone number?
- The practice phone number listed in the NPPES registry for Michael Millstone is (512) 861-8929.
- Is Michael Millstone's NPI active?
- Yes — Michael Millstone's NPI (1891038733) is active in the NPPES registry as of the last update on 2022-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.