Physician Profile
Unclaimed ProfileAbout ONAITIS
Based in San Diego, CA, Mark William Onaitis, MD is listed in the NPI registry under thoracic surgery. Mark graduated from Duke University School of Medicine in 1997. Mark is also listed as specialising in thoracic surgery (cardiothoracic).
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 kind of doctor is Dr. Onaitis?
Dr. Onaitis is a thoracic surgeon in San Diego, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “THORACIC SURGERY”.
NPI registry
What is Dr. Onaitis's address?
Dr. Onaitis is listed at 200 W ARBOR DR, San Diego, CA 92103. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Onaitis?
The number on file is (858) 657-7777. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Onaitis's NPI number?
Dr. Onaitis's National Provider Identifier is 1841310638. 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. Onaitis train?
Dr. Onaitis attended Duke University School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Onaitis been practising?
Dr. Onaitis has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Onaitis perform?
According to Medicare billing data, Dr. Onaitis performs procedures including removal of lymph nodes of chest cavity using an endoscope, removal of segment of lung tissue using an endoscope and exam of lung with removal of lung lobe using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Onaitis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Onaitis. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (858) 657-7777
- Email not available
Practice Locations
200 W ARBOR DR
San Diego, CA 92103
Procedures Most Often Billed to Medicare
181 services · 170 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of lymph nodes of chest cavity using an endoscope | Procedure | 32674 |
34 |
| Removal of segment of lung tissue using an endoscope | Procedure | 32669 |
23 |
| Exam of lung with removal of lung lobe using an endoscope | Procedure | 32663 |
11 |
| 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 |
38 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
25 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
19 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
19 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
12 |
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.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 thoracic surgeons in San Diego 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Duke University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Duke University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of lymph nodes of chest cavity using an endoscope 7
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.