Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Howard Lee Grattan, MD

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Gresham, OR · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1902973266

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Registry record

Entity type Individual (Type 1)

Name Dr. Howard Lee Grattan

Credential MD

Sex Male

Practice address Gresham, OR, 97030

Phone (801) 849-2622

Fax (801) 849-2622

Enumeration date Nov 29, 2006

Last updated in NPPES Feb 7, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License A87243 (CA) Secondary

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License MD152830 (OR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Howard Grattan?

Howard Grattan is registered in NPPES with the primary taxonomy of Pain Medicine (Physical Medicine & Rehabilitation) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Laarnie Chaco Physician Assistant · Gresham, OR NPI 1568760551 Adrian Anthony Pain Medicine (Anesthesiology) Physician · Gresham, OR NPI 1376084632 Ariel Reiter Physical Therapist · Gresham, OR NPI 1730679903 Eleonora Shukshina Family Nurse Practitioner · Gresham, OR NPI 1821812934

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-07.