What is Henry Grass's NPI number?

Henry Grass's National Provider Identifier (NPI) is 1255339404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Henry Grass's specialty?

Henry Grass is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Henry Grass located?

Henry Grass's practice location on file with NPPES is 9155 Sw Barnes Rd, Portland, OR 97225-6625.

What is Henry Grass's phone number?

The practice phone number listed in the NPPES registry for Henry Grass is (503) 297-2368.

Is Henry Grass's NPI active?

Yes — Henry Grass's NPI (1255339404) is active in the NPPES registry as of the last update on 2011-11-04.

IndividualActive

Henry Grass, MD

NPI 1255339404 · Psychiatry Physician · Portland, OR

Henry Grass, MD is a Psychiatry Physician provider in Portland, OR (NPI 1255339404).

Provider details

NPI number: 1255339404
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: MD08859 (OR)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense MD08859 (OR)
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
21 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

9155 Sw Barnes Rd

Ste 418

Portland, OR 97225-6625

Phone: (503) 297-2368

Fax: (503) 292-4570

Street-level locationGet directions

More OR providers

Mailing address

3439 Ne Sandy Blvd

Portland, OR 97232-1959

Enumerated: 2005-07-12
Last updated: 2011-11-04

Frequently asked questions

What is Henry Grass's NPI number?: Henry Grass's National Provider Identifier (NPI) is 1255339404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Henry Grass's specialty?: Henry Grass is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
Where is Henry Grass located?: Henry Grass's practice location on file with NPPES is 9155 Sw Barnes Rd, Portland, OR 97225-6625.
What is Henry Grass's phone number?: The practice phone number listed in the NPPES registry for Henry Grass is (503) 297-2368.
Is Henry Grass's NPI active?: Yes — Henry Grass's NPI (1255339404) is active in the NPPES registry as of the last update on 2011-11-04.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.