Physician Profile
Nazia Hasan, M.D., MPH
Unclaimed ProfileAbout Dr. Hasan
Based in Fairfield, CA, Nazia Hasan, M.D., MPH is listed in the NPI registry under gastroenterology. Nazia graduated from George Washington University School of Medicine in 2007. Medicare claims data shows Nazia provided 667 services to 552 patients. The services billed most often include ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope, review by radiologist of image from tube placement into bile duct using an endoscope, and ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. NPI 1831394667 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
- (707) 646-3555
- Email not available
Practice Locations
4520 BUSINESS CENTER DR. SUITE 180
Fairfield, CA 94534
4150 Clement St
San Francisco, CA 94121
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
667 services · 552 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43259 |
129 | More than most peers in Gastroenterology |
| Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43242 |
71 | More than most peers in Gastroenterology |
| Insertion of stent into pancreatic or bile duct using a flexible endoscope | Procedure | 43274 |
68 | More than most peers in Gastroenterology |
| Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | Procedure | 43264 |
60 | More than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
48 | As often as other peers in Gastroenterology |
| Replacement of stent in pancreatic or bile duct using a flexible endoscope | Procedure | 43276 |
34 | More often than most peers in Gastroenterology |
| Placement of stent in esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43266 |
30 | More often than most peers in Gastroenterology |
| Biopsy of gallbladder, pancreatic, liver, and bile ducts using a flexible endoscope | Procedure | 43261 |
22 | More often than most peers in Gastroenterology |
| Removal of foreign bodies of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43247 |
21 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
20 | Less often 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.
Related specialists at this location 5
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 gastroenterologists in Fairfield 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at George Washington University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound exam 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 is Nazia Hasan, M.D.'s specialty?
Nazia Hasan, M.D. is a gastroenterologist in Fairfield, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Nazia Hasan, M.D.?
Nazia Hasan, M.D. is listed at 4520 Business Center Dr. Suite 180, Fairfield, CA 94534. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Nazia Hasan, M.D.?
The number on file is (707) 646-3555. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Nazia Hasan, M.D.?
Nazia Hasan, M.D.'s National Provider Identifier is 1831394667. 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
What is Nazia Hasan, M.D.'s education?
Nazia Hasan, M.D. attended George Washington University School of Medicine, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Nazia Hasan, M.D. have?
Nazia Hasan, M.D. has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What is Nazia Hasan, M.D. known for?
According to Medicare billing data, Nazia Hasan, M.D. performs procedures including ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope, ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and insertion of stent into pancreatic or bile duct using a flexible endoscope; reads or performs imaging such as review by radiologist of image from tube placement into bile duct using an endoscope. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Nazia Hasan, M.D.'s profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Nazia Hasan, M.D.. If this is you, claiming it is free.
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