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Edit this profileAt a glance
- 2001 Santa Monica Blvd, Suite 360W, Santa Monica, CA 90404
About Dr. Katkov
William N. Katkov, M.D. practices gastroenterology in Santa Monica, CA. William is a 1983 graduate of University of Southern California Keck School of Medicine. According to Medicare claims data, William cared for 1,176 Medicare patients across 1,271 services. The services billed most often include biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and biopsy of large bowel using a flexible endoscope. The provider's National Provider Identifier (NPI) is 1386693646.
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
- (310) 453-1871
- Email not available
Practice Locations
2001 SANTA MONICA BLVD SUITE 360W
Santa Monica, CA 90404
Conditions Commonly Evaluated or Treated
Within Gastroenterology 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
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
1,271 services · 1,176 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
161 | More than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
142 | More than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
38 | As often as other peers in Gastroenterology |
| Insertion of stomach tube using a flexible endoscope | Procedure | 43246 |
33 | More often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
25 | More often than most peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
20 | As often as other peers in Gastroenterology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
145 | More often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
137 | More often than most peers in Gastroenterology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
136 | More than most peers in Gastroenterology |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
135 | More than most peers in Gastroenterology |
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 gastroenterologists at this location 2
Same specialty, same street address — most likely the same department or group.
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.
More connections — 30 related providers in 4 groups
Other gastroenterologists in Santa Monica 6
Same specialty, same city.
Trained at University of Southern California Keck School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1983 at University of Southern California Keck School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does William N. Katkov specialize in?
William N. Katkov is a gastroenterologist in Santa Monica, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is William N. Katkov located?
William N. Katkov is listed at 2001 Santa Monica Blvd Suite 360W, Santa Monica, CA 90404. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William N. Katkov's phone number?
The number on file is (310) 453-1871. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William N. Katkov's NPI number?
William N. Katkov's National Provider Identifier is 1386693646. 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 William N. Katkov train?
William N. Katkov attended University of Southern California Keck School of Medicine, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How long has William N. Katkov been practicing?
William N. Katkov has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What does William N. Katkov do most often?
According to Medicare billing data, William N. Katkov performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, biopsy of large bowel using a flexible endoscope and removal of polyps or growths of large bowel using an endoscope with mechanical snare, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William N. Katkov confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William N. Katkov. If this is you, claiming it is free.
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