Michael Dorsi, MD
NPI 1942355854 · Neurological Surgery Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Dorsi, MD is a Neurological Surgery Physician provider in Thousand Oaks, CA (NPI 1942355854).
Provider details
- NPI number
- 1942355854
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- P19058 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
455 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 232 | $97 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 110 | $232 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 58 | $177 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 41 | $137 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 14 | $97 |
Typical Medicare-allowed amounts for these services range $97–$232 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$98,830 across 260 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 26585 Agoura Rd Ste 330Calabasas, CA 91302-1958Phone: (310) 319-3475
- 6633 Telephone Rd Ste 212Ventura, CA 93003-5569Phone: (310) 319-3475
- 168 N Brent StSuite 408Ventura, CA 93003-2817Phone: (805) 643-2179
Registry dates
- Enumerated
- 2007-01-24
- Last updated
- 2020-09-24
- Certified
- 2020-09-24
Frequently asked questions
- What is Michael Dorsi's NPI number?
- Michael Dorsi's National Provider Identifier (NPI) is 1942355854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Dorsi's specialty?
- Michael Dorsi is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Dorsi located?
- Michael Dorsi's practice location on file with NPPES is 100 Moody Ct Ste 200, Thousand Oaks, CA 91360-6082.
- What is Michael Dorsi's phone number?
- The practice phone number listed in the NPPES registry for Michael Dorsi is (310) 319-3475.
- Does Michael Dorsi accept Medicare?
- Michael Dorsi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Dorsi's NPI active?
- Yes — Michael Dorsi's NPI (1942355854) is active in the NPPES registry as of the last update on 2020-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.