Oak Tree Surgical Center LLC
NPI 1831428861 · Ambulatory Surgical Clinic/Center · Thousand Oaks, CA
Enrolled with Medicare as Part B Supplier - Ambulatory Surgical Center · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oak Tree Surgical Center LLC is a Ambulatory Surgical Clinic/Center organization in Thousand Oaks, CA (NPI 1831428861).
Provider details
- NPI number
- 1831428861
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Shahram Daneshgar, Owner(805) 371-8404
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
643 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 232 | $505 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 188 | $539 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 129 | $692 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 79 | $541 |
| Dilation of Esophagus43450 | 15 | $534 |
Typical Medicare-allowed amounts for these services range $505–$692 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-12-22
- Last updated
- 2012-05-18
Frequently asked questions
- What is Oak Tree Surgical Center LLC's NPI number?
- Oak Tree Surgical Center LLC's National Provider Identifier (NPI) is 1831428861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Oak Tree Surgical Center LLC?
- Oak Tree Surgical Center LLC is classified in the NPPES registry as Ambulatory Surgical Clinic/Center (Ambulatory Health Care Facilities).
- Where is Oak Tree Surgical Center LLC located?
- Oak Tree Surgical Center LLC's practice location on file with NPPES is 2230 Lynn Rd, Thousand Oaks, CA 91360-1901.
- What is Oak Tree Surgical Center LLC's phone number?
- The practice phone number listed in the NPPES registry for Oak Tree Surgical Center LLC is (805) 371-8400.
- Does Oak Tree Surgical Center LLC accept Medicare?
- Oak Tree Surgical Center LLC 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 Oak Tree Surgical Center LLC?
- The authorized official listed on Oak Tree Surgical Center LLC's NPPES record is Shahram Daneshgar, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Oak Tree Surgical Center LLC's NPI active?
- Yes — Oak Tree Surgical Center LLC's NPI (1831428861) is active in the NPPES registry as of the last update on 2012-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.