What is Lydia Hartwig's NPI number?

Lydia Hartwig's National Provider Identifier (NPI) is 1265312037, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lydia Hartwig's specialty?

Lydia Hartwig is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).

Where is Lydia Hartwig located?

Lydia Hartwig's practice location on file with NPPES is 3724 Jefferson St Ste 104, Austin, TX 78731-6204.

What is Lydia Hartwig's phone number?

The practice phone number listed in the NPPES registry for Lydia Hartwig is (512) 399-9039.

Is Lydia Hartwig's NPI active?

Yes — Lydia Hartwig's NPI (1265312037) is active in the NPPES registry as of the last update on 2025-09-03.

IndividualActive

Lydia Hartwig, MS RD LD

NPI 1265312037 · Registered Dietitian · Austin, TX

Lydia Hartwig, MS RD LD is a Registered Dietitian provider in Austin, TX (NPI 1265312037).

Provider details

NPI number: 1265312037
Entity type: Individual
Primary specialty: Registered DietitianDietary & Nutritional Service Providers
Credential: MS RD LD
Sex: Female
Sole proprietor: No
License: 86167714 (TX)

Specialties & taxonomies

Registered DietitianPrimary133V00000XLicense 86167714 (TX)
Dietary & Nutritional Service Providers

Profile Score

Established profile(54/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

3724 Jefferson St Ste 104

Austin, TX 78731-6204

Phone: (512) 399-9039

Street-level locationGet directions

More TX providers

Mailing address