Sebastian Ko, M.D.
NPI 1902367642 · Orthopaedic Surgery Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sebastian Ko, M.D. is a Orthopaedic Surgery Physician provider in Mountain View, CA (NPI 1902367642).
Provider details
- NPI number
- 1902367642
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036.148139 (IL)
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 tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
34 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 21 | $100 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 13 | $139 |
Typical Medicare-allowed amounts for these services range $100–$139 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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
Additional practice locations (2)
- 4646 N Marine DrChicago, IL 60640-5759Phone: (773) 564-5219
- 259 E Erie13th FloorChicago, IL 60611Phone: (312) 472-6488
Registry dates
- Enumerated
- 2019-03-26
- Last updated
- 2024-12-03
- Certified
- 2024-12-03
Frequently asked questions
- What is Sebastian Ko's NPI number?
- Sebastian Ko's National Provider Identifier (NPI) is 1902367642, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sebastian Ko's specialty?
- Sebastian Ko is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Sebastian Ko located?
- Sebastian Ko's practice location on file with NPPES is 701 E El Camino Real, Mountain View, CA 94040-2833.
- What is Sebastian Ko's phone number?
- The practice phone number listed in the NPPES registry for Sebastian Ko is (650) 934-7111.
- Does Sebastian Ko accept Medicare?
- Sebastian Ko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sebastian Ko's NPI active?
- Yes — Sebastian Ko's NPI (1902367642) is active in the NPPES registry as of the last update on 2024-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.