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Edit this profileAt a glance
- 300 Pasteur Dr, Palo Alto, CA 94304
About Dr. 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 specializing in surgery. Medicare claims data shows Frederick provided 47 services to 43 patients. The services billed most often include partial removal of breast and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. NPI 1154457091 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Palo Alto, CA 94304
Conditions Commonly Evaluated or Treated
Within General Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anorectal
Appendix, bowel, and emergency
Gallbladder and biliary
Hernia and abdominal wall
Skin and soft tissue
Abdominal
Abdominal wall
Breast
Colorectal
Digestive
- Acid reflux
- Acute pancreatitis
- Bleeding Stomach Ulcer
- Bowel Fistula
- Gastroparesis
- Swallowing difficulties
Emergency surgery
Endocrine
Gastrointestinal
Hernia
Infections
Lymphatic
Oncology
Procedures & services
Most searched procedures
Bowel and emergency abdominal
- Colon resection
- Exploratory laparoscopy
- Exploratory laparotomy
- Repair of perforated peptic ulcer
- Small-bowel resection
- Surgery for bowel obstruction
- Surgical drainage of abdominal abscess
- Surgical lysis of adhesions
Gallbladder and appendix
Hernia repair
Skin and soft tissue
Abdominal surgery
Abdominal wall
Access and nutrition
Anorectal
- Anal fistula surgery
- Drainage of anal abscess
- Hemorrhoid removal
- Rubber-band ligation of hemorrhoids
- Surgery for chronic anal fissure
Biopsy
Breast surgery
- Axillary lymph-node dissection
- Excisional biopsy of a breast mass
- Mastectomy
- Sentinel lymph-node biopsy
Breast Surgery
Colorectal
Colorectal surgery
Digestive procedures
Endocrine surgery
Gastrointestinal
Hernia surgery
Skin & Soft Tissue
Surgical Oncology
Surgical procedures
Vascular Access
Wound care
Procedures Most Often Billed to Medicare
47 services · 43 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Partial removal of breast | Procedure | 19301 |
36 | More often than most peers in General Surgery |
| 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 | Less often than most peers in General Surgery |
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.
Common questions
What does Dr. Dirbas specialize in?
Dr. Dirbas is a general surgeon in Palo Alto, CA. That is the designation recorded for this NPI in the federal registry, where it is listed 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. Contact the office directly to confirm availability and scheduling.
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
Guide.md listings do not constitute medical advice or an endorsement.