Napa Valley Nephrology & Internal Medicine Medical Group, Inc.
NPI 1073572582 · Geriatric Medicine (Internal Medicine) Physician · Napa, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Napa Valley Nephrology & Internal Medicine Medical Group, Inc. is a Geriatric Medicine (Internal Medicine) Physician organization in Napa, CA (NPI 1073572582).
Provider details
- NPI number
- 1073572582
- Entity type
- Organization
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Tammy Hill, Business Manager(707) 252-8407
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Internal Medicine Physician207R00000X
Allopathic & Osteopathic Physicians
- Nephrology Physician207RN0300X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2006-03-22
- Last updated
- 2025-09-11
Frequently asked questions
- What is Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s NPI number?
- Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s National Provider Identifier (NPI) is 1073572582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Napa Valley Nephrology & Internal Medicine Medical Group, Inc.?
- Napa Valley Nephrology & Internal Medicine Medical Group, Inc. is classified in the NPPES registry as Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Napa Valley Nephrology & Internal Medicine Medical Group, Inc. located?
- Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s practice location on file with NPPES is 3443 Villa Ln, Napa, CA 94558-6417.
- What is Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Napa Valley Nephrology & Internal Medicine Medical Group, Inc. is (707) 252-8407.
- Does Napa Valley Nephrology & Internal Medicine Medical Group, Inc. accept Medicare?
- Napa Valley Nephrology & Internal Medicine Medical Group, Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Napa Valley Nephrology & Internal Medicine Medical Group, Inc.?
- The authorized official listed on Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s NPPES record is Tammy Hill, Business Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s NPI active?
- Yes — Napa Valley Nephrology & Internal Medicine Medical Group, Inc.'s NPI (1073572582) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.