David Longstroth, M.D.
NPI 1033497367 · Family Medicine Physician · Martinez, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Longstroth, M.D. is a Family Medicine Physician provider in Martinez, CA (NPI 1033497367).
Provider details
- NPI number
- 1033497367
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A117824 (CA)
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
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1450 Treat Blvd # 160Walnut Creek, CA 94597-2168Phone: (925) 296-9000
Registry dates
- Enumerated
- 2011-08-03
- Last updated
- 2018-11-06
Frequently asked questions
- What is David Longstroth's NPI number?
- David Longstroth's National Provider Identifier (NPI) is 1033497367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Longstroth's specialty?
- David Longstroth is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Longstroth located?
- David Longstroth's practice location on file with NPPES is 2500 Alhambra Ave, Martinez, CA 94553-3156.
- What is David Longstroth's phone number?
- The practice phone number listed in the NPPES registry for David Longstroth is (925) 370-5200.
- Does David Longstroth accept Medicare?
- David Longstroth is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Longstroth's NPI active?
- Yes — David Longstroth's NPI (1033497367) is active in the NPPES registry as of the last update on 2018-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.