On-Site Anesthesia Services Inc
NPI 1669417176 · Certified Registered Nurse Anesthetist · Lake Oswego, OR
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
On-Site Anesthesia Services Inc is a Certified Registered Nurse Anesthetist organization in Lake Oswego, OR (NPI 1669417176).
Provider details
- NPI number
- 1669417176
- Entity type
- Organization
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Organization subpart
- No
- Authorized official
- Grant Diggles, Ceo(503) 548-4770
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Anesthesiology Physician207L00000X
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Other names (DBA / former)
- Doing business as
- Outpatient Anesthesia Services of Oregon
Registry dates
- Enumerated
- 2006-06-18
- Last updated
- 2024-10-09
- Certified
- 2024-10-09
Frequently asked questions
- What is On-Site Anesthesia Services Inc's NPI number?
- On-Site Anesthesia Services Inc's National Provider Identifier (NPI) is 1669417176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is On-Site Anesthesia Services Inc?
- On-Site Anesthesia Services Inc is classified in the NPPES registry as Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is On-Site Anesthesia Services Inc located?
- On-Site Anesthesia Services Inc's practice location on file with NPPES is 333 S State St # V111, Lake Oswego, OR 97034-3932.
- What is On-Site Anesthesia Services Inc's phone number?
- The practice phone number listed in the NPPES registry for On-Site Anesthesia Services Inc is (503) 548-4770.
- Does On-Site Anesthesia Services Inc accept Medicare?
- On-Site Anesthesia Services Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for On-Site Anesthesia Services Inc?
- The authorized official listed on On-Site Anesthesia Services Inc's NPPES record is Grant Diggles, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is On-Site Anesthesia Services Inc's NPI active?
- Yes — On-Site Anesthesia Services Inc's NPI (1669417176) is active in the NPPES registry as of the last update on 2024-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.