Physician Profile
Unclaimed ProfileAbout CHI
Based in Thousand Oaks, CA, David D. Chi, M.D. is listed in the NPI registry under general surgery. David graduated from University of California, Geffen School of Medicine in 1990. David is also listed as specialising in surgery and surgery of the hand.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Chi specialise in?
Dr. Chi is a general surgeon in Thousand Oaks, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GENERAL SURGERY”.
NPI registry
Where is Dr. Chi located?
Dr. Chi is listed at 555 MARIN STREET SUITE 210, Thousand Oaks, CA 91360. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chi's phone number?
The number on file is (805) 497-7785. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chi's NPI number?
Dr. Chi's National Provider Identifier is 1881746428. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Chi go to medical school?
Dr. Chi attended University of California, Geffen School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chi been practising?
Dr. Chi has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Chi do most often?
According to Medicare billing data, Dr. Chi performs procedures including repair of groin hernia and initial repair of sliding hernia of abdomen, less than 3 cm in length, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chi confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chi. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (805) 497-7785
- Email not available
Practice Locations
555 MARIN STREET SUITE 210
Thousand Oaks, CA 91360
Procedures Most Often Billed to Medicare
631 services · 512 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Repair of groin hernia (5 years or older) | Procedure | 49505 |
31 |
| Initial repair of sliding hernia of abdomen, less than 3 cm in length | Procedure | 49591 |
15 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
330 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
124 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
78 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
30 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
12 |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other general surgeons in Thousand Oaks 8
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1990 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Repair of groin hernia (5 years or older) 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.