Ann Messer, MD
NPI 1154452050 · Family Medicine Physician · Austin, TX
Ann Messer, MD is a Family Medicine Physician provider in Austin, TX (NPI 1154452050).
Provider details
- NPI number
- 1154452050
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- J7584 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Varicella-Zoster Ge/As01b/Pfbrand: Shingrix | 13 | — |
| Rsv Vacc, Pref a and Pref B/Pfbrand: Abrysvo | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ann Messer's NPI number?
- Ann Messer's National Provider Identifier (NPI) is 1154452050, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Messer's specialty?
- Ann Messer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Messer located?
- Ann Messer's practice location on file with NPPES is 408 W 45th St, Austin, TX 78751-3014.
- What is Ann Messer's phone number?
- The practice phone number listed in the NPPES registry for Ann Messer is (512) 451-5800.
- Is Ann Messer's NPI active?
- Yes — Ann Messer's NPI (1154452050) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.