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Paul Chasin, MD
NPI 1649261959 · Emergency Medicine Physician · Pleasanton, CA
Paul Chasin, MD is a Emergency Medicine Physician provider in Pleasanton, CA (NPI 1649261959).
Provider details
- NPI number
- 1649261959
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- A26339 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
5555 W Las Positas Blvd
Pleasanton, CA 94588-4000
Phone: (209) 342-2300
Fax: (209) 524-4240
Street-level locationGet directions
Mailing address
4301 Northstar Way
Modesto, CA 95356-9262
Registry dates
- Enumerated
- 2005-11-04
- Last updated
- 2007-07-08
Frequently asked questions
- What is Paul Chasin's NPI number?
- Paul Chasin's National Provider Identifier (NPI) is 1649261959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paul Chasin's specialty?
- Paul Chasin is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Paul Chasin located?
- Paul Chasin's practice location on file with NPPES is 5555 W Las Positas Blvd, Pleasanton, CA 94588-4000.
- What is Paul Chasin's phone number?
- The practice phone number listed in the NPPES registry for Paul Chasin is (209) 342-2300.
- Is Paul Chasin's NPI active?
- Yes — Paul Chasin's NPI (1649261959) 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.