Are you Nancy J. Han, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 18035 Brookhurst St Ste 2100, Fountain Valley, CA 92708
About Dr. Han
Based in Fountain Valley, CA, Nancy J. Han, M.D. is listed in the NPI registry under gastroenterology. Nancy graduated from Ohio Medical University in 2005. According to Medicare claims data, Nancy cared for 234 Medicare patients across 256 services. The services billed most often include biopsy of large 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 removal of polyps or growths of large bowel using an endoscope with mechanical snare. NPI 1609055300 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
- (657) 241-9090
- Email not available
Practice Locations
18035 BROOKHURST ST STE 2100
Fountain Valley, CA 92708
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
256 services · 234 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
64 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
42 | As often as other peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
31 | Less often than most peers in Gastroenterology |
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
14 | Less often than most 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 |
53 | As often as other peers in Gastroenterology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
28 | As often as other peers in Gastroenterology |
| Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monit | Billing code | G0500 |
24 | 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.
Other gastroenterologists at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 — 16 related providers in 4 groups
Other gastroenterologists in Fountain Valley 4
Same specialty, same city.
Trained at Ohio Medical University 1
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Ohio Medical University 3
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Nancy J. Han?
Nancy J. Han is a gastroenterologist in Fountain Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
What is Nancy J. Han's address?
Nancy J. Han is listed at 18035 Brookhurst St Ste 2100, Fountain Valley, CA 92708. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Nancy J. Han?
The number on file is (657) 241-9090. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Nancy J. Han's NPI number?
Nancy J. Han's National Provider Identifier is 1609055300. 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 Nancy J. Han train?
Nancy J. Han attended Ohio Medical University, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Nancy J. Han been practicing?
Nancy J. Han has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What procedures does Nancy J. Han perform?
According to Medicare billing data, Nancy J. Han performs procedures including biopsy of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Nancy J. Han confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Nancy J. Han. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.