Diana Feldstein, MD
NPI 1023336526 · Internal Medicine Physician · Portland, OR
Diana Feldstein, MD is a Internal Medicine Physician provider in Portland, OR (NPI 1023336526).
Provider details
- NPI number
- 1023336526
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2013-01312 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2010-05-07
- Last updated
- 2017-07-05
Frequently asked questions
- What is Diana Feldstein's NPI number?
- Diana Feldstein's National Provider Identifier (NPI) is 1023336526, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Feldstein's specialty?
- Diana Feldstein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Feldstein located?
- Diana Feldstein's practice location on file with NPPES is 4900 Ne Glisan St, Portland, OR 97213-2936.
- What is Diana Feldstein's phone number?
- The practice phone number listed in the NPPES registry for Diana Feldstein is (503) 215-0750.
- Is Diana Feldstein's NPI active?
- Yes — Diana Feldstein's NPI (1023336526) is active in the NPPES registry as of the last update on 2017-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.