What is Dennis Ruff's NPI number?

Dennis Ruff's National Provider Identifier (NPI) is 1003035718, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Dennis Ruff's specialty?

Dennis Ruff is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Dennis Ruff located?

Dennis Ruff's practice location on file with NPPES is 8307 Gault Ln, San Antonio, TX 78209-1028.

What is Dennis Ruff's phone number?

The practice phone number listed in the NPPES registry for Dennis Ruff is (210) 798-5112.

Is Dennis Ruff's NPI active?

Yes — Dennis Ruff's NPI (1003035718) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Dennis Ruff, M.D.

NPI 1003035718 · Internal Medicine Physician · San Antonio, TX

Dennis Ruff, M.D. is a Internal Medicine Physician provider in San Antonio, TX (NPI 1003035718).

Provider details

NPI number: 1003035718
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: G9525 (TX)

Practice location

8307 Gault Ln

San Antonio, TX 78209-1028

Phone: (210) 798-5112

Street-level locationGet directions

More TX providers

Mailing address

8307 Gault Ln

San Antonio, TX 78209-1028

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense G9525 (TX)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

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.

Enumerated: 2007-04-24
Last updated: 2007-07-08

Frequently asked questions

What is Dennis Ruff's NPI number?: Dennis Ruff's National Provider Identifier (NPI) is 1003035718, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Dennis Ruff's specialty?: Dennis Ruff is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Dennis Ruff located?: Dennis Ruff's practice location on file with NPPES is 8307 Gault Ln, San Antonio, TX 78209-1028.
What is Dennis Ruff's phone number?: The practice phone number listed in the NPPES registry for Dennis Ruff is (210) 798-5112.
Is Dennis Ruff's NPI active?: Yes — Dennis Ruff's NPI (1003035718) 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.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions