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John Hammerstad, MD
NPI 1174692446 · Neurology Physician · Portland, OR
John Hammerstad, MD is a Neurology Physician provider in Portland, OR (NPI 1174692446).
Provider details
- NPI number
- 1174692446
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD08310 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
3181 Sw Sam Jackson Park Rd
Portland, OR 97239-3011
Phone: (503) 494-7772
Street-level locationGet directions
Mailing address
17330 Grandview Ct
Lake Oswego, OR 97034-6362
Registry dates
- Enumerated
- 2006-11-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Hammerstad's NPI number?
- John Hammerstad's National Provider Identifier (NPI) is 1174692446, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hammerstad's specialty?
- John Hammerstad is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hammerstad located?
- John Hammerstad's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011.
- What is John Hammerstad's phone number?
- The practice phone number listed in the NPPES registry for John Hammerstad is (503) 494-7772.
- Is John Hammerstad's NPI active?
- Yes — John Hammerstad's NPI (1174692446) 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.