IndividualActive
Jack Feldsher, M.D.
NPI 1215121785 · General Practice Physician · Irwindale, CA
Jack Feldsher, M.D. is a General Practice Physician provider in Irwindale, CA (NPI 1215121785).
Provider details
- NPI number
- 1215121785
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G058688 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
6000 N Irwindale Ave
Suite a
Irwindale, CA 91702-3200
Phone: (626) 969-9800
Fax: (626) 969-3061
Street-level locationGet directions
Mailing address
6000 N Irwindale Ave
Irwindale, CA 91702-3200
Registry dates
- Enumerated
- 2007-08-28
- Last updated
- 2007-08-28
Frequently asked questions
- What is Jack Feldsher's NPI number?
- Jack Feldsher's National Provider Identifier (NPI) is 1215121785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Feldsher's specialty?
- Jack Feldsher is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Feldsher located?
- Jack Feldsher's practice location on file with NPPES is 6000 N Irwindale Ave, Irwindale, CA 91702-3200.
- What is Jack Feldsher's phone number?
- The practice phone number listed in the NPPES registry for Jack Feldsher is (626) 969-9800.
- Is Jack Feldsher's NPI active?
- Yes — Jack Feldsher's NPI (1215121785) is active in the NPPES registry as of the last update on 2007-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.