Doctor profile · Federal record

Dr. Sebastian Ko, M.D.

Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Sports Medicine (Orthopaedic Surgery) Physician · Mountain View, CA

  • NPI 1902367642
  • Accepts Medicare
  • 12 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
701 E El Camino Real
Mountain View, CA 940402833
(650) 934-7111
Additional location
259 E Erie, 13Th Floor
Chicago, IL 60611
(312) 472-6488
Additional location
4646 N Marine Dr
Chicago, IL 606405759
(773) 564-5219
Mailing address
Po Box 276950
Sacramento, CA 958276950

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
December 3, 2024
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
207X00000X — NUCC code
State licenses (2)
California #C199717 · Illinois #036.148139

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1902367642. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
136
Distinct HCPCS
3
Medicare allowed
$14,540
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 64 49 $102
99204 New patient office or other outpatient visit, 45-59 minutes 42 42 $141
99213 Established patient office or other outpatient visit, 20-29 minutes 30 27 $69

In context: peer comparison

Among 3 peers in this city , average services per provider: 62. This provider delivers 2.2× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Sebastian Ko's medical specialty?
Dr. Sebastian Ko practices Orthopaedic Surgery Physician in Mountain View, CA.
Where does Dr. Sebastian Ko practice?
Dr. Sebastian Ko practices at 701 E El Camino Real, Mountain View, CA 940402833. Office phone: 6509347111.
What is Dr. Sebastian Ko's NPI?
Dr. Sebastian Ko's National Provider Identifier (NPI) is 1902367642, issued by NPPES.
Does Dr. Sebastian Ko accept Medicare assignment?
Yes. Dr. Sebastian Ko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sebastian Ko commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.