What is Mark Oldham's NPI number?

Mark Oldham's National Provider Identifier (NPI) is 1023195823, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Oldham's specialty?

Mark Oldham is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Mark Oldham located?

Mark Oldham's practice location on file with NPPES is 200 Silver Ln, Eugene, OR 97404-2216.

What is Mark Oldham's phone number?

The practice phone number listed in the NPPES registry for Mark Oldham is (541) 687-4041.

Is Mark Oldham's NPI active?

Yes — Mark Oldham's NPI (1023195823) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Mark Oldham, MSSW

NPI 1023195823 · Clinical Social Worker · Eugene, OR

Mark Oldham, MSSW is a Clinical Social Worker provider in Eugene, OR (NPI 1023195823).

Provider details

NPI number: 1023195823
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: MSSW
Sex: Male
Sole proprietor: No
License: 0448 (OR)

Practice location

200 Silver Ln

Eugene, OR 97404-2216

Phone: (541) 687-4041

Fax: (541) 687-3896

Street-level locationGet directions

More OR providers

Mailing address

88293 Lake Side Dr

Veneta, OR 97487-9603

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense 0448 (OR)
Behavioral Health & Social Service Providers

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.

Enumerated: 2006-11-01
Last updated: 2007-07-08

Frequently asked questions

What is Mark Oldham's NPI number?: Mark Oldham's National Provider Identifier (NPI) is 1023195823, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Oldham's specialty?: Mark Oldham is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
Where is Mark Oldham located?: Mark Oldham's practice location on file with NPPES is 200 Silver Ln, Eugene, OR 97404-2216.
What is Mark Oldham's phone number?: The practice phone number listed in the NPPES registry for Mark Oldham is (541) 687-4041.
Is Mark Oldham's NPI active?: Yes — Mark Oldham's NPI (1023195823) 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.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions