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Larry Heinonen, MD
NPI 1669478343 · Gastroenterology Physician · Portland, OR
Larry Heinonen, MD is a Gastroenterology Physician provider in Portland, OR (NPI 1669478343).
Provider details
- NPI number
- 1669478343
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD09495 (OR)
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
9701 Sw Barnes Rd
Ste 300
Portland, OR 97225-6689
Phone: (503) 297-8081
Fax: (503) 292-6601
Street-level locationGet directions
Mailing address
975 Se Sandy Blvd
Portland, OR 97214-1308
Registry dates
- Enumerated
- 2005-06-27
- Last updated
- 2008-08-19
Frequently asked questions
- What is Larry Heinonen's NPI number?
- Larry Heinonen's National Provider Identifier (NPI) is 1669478343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larry Heinonen's specialty?
- Larry Heinonen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Larry Heinonen located?
- Larry Heinonen's practice location on file with NPPES is 9701 Sw Barnes Rd, Portland, OR 97225-6689.
- What is Larry Heinonen's phone number?
- The practice phone number listed in the NPPES registry for Larry Heinonen is (503) 297-8081.
- Is Larry Heinonen's NPI active?
- Yes — Larry Heinonen's NPI (1669478343) is active in the NPPES registry as of the last update on 2008-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.