Physician Profile
Unclaimed ProfileAbout DIRBAS
Based in Palo Alto, CA, Frederick M Dirbas, MD is listed in the NPI registry under general surgery. Frederick graduated from Columbia University College of Physicians and Surgeons in 1985. Frederick is also listed as specialising in surgery.
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. Dirbas specialise in?
Dr. Dirbas is a general surgeon in Palo Alto, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GENERAL SURGERY”.
NPI registry
Where is Dr. Dirbas located?
Dr. Dirbas is listed at 300 PASTEUR DR, Palo Alto, CA 94304. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Dirbas's phone number?
The number on file is (650) 723-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Dirbas?
Dr. Dirbas's National Provider Identifier is 1154457091. 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. Dirbas go to medical school?
Dr. Dirbas attended Columbia University College of Physicians and Surgeons, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Dirbas have?
Dr. Dirbas has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Dirbas do most often?
According to Medicare billing data, Dr. Dirbas performs procedures including partial removal of breast, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Dirbas's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Dirbas. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Palo Alto, CA 94304
Procedures Most Often Billed to Medicare
47 services · 43 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Partial removal of breast | Procedure | 19301 |
36 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other general surgeons at this location 1
Same specialty, same street address — most likely the same department or group.
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 Palo Alto 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Columbia University College of Physicians and Surgeons 7
Other providers in the same specialty who trained at the same institution.
Class of 1985 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Partial removal of breast 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.