Are you Mark H. Flasar, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 820 Bestgate Rd, Suite 2A, Annapolis, MD 21401
About Dr. Flasar
Based in Annapolis, MD, Mark H. Flasar, M.D. is listed in the NPI registry under gastroenterology. According to Medicare claims data, Mark cared for 1,255 Medicare patients across 4,828 services. The services billed most often include injection, infliximab, excludes biosimilar, 10 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and biopsy of large bowel using a flexible endoscope. NPI 1326079278 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
- (410) 224-2116
- Email not available
Practice Locations
820 BESTGATE RD SUITE 2A
Annapolis, MD 21401
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
4,828 services · 1,255 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
202 | More than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
150 | More often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
116 | More often than most peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
28 | More often than most peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
27 | More often than most peers in Gastroenterology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
58 | More often than most peers in Gastroenterology |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
48 | More often than most peers in Gastroenterology |
| Study of esophagus to assess movement | Treatment | 91010 |
12 | Less often than most peers in Gastroenterology |
| Injection, infliximab, excludes biosimilar, 10 mg | Drug given | J1745 |
3,410 | More 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 |
362 | 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 8
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 — 27 related providers in 4 groups
Other gastroenterologists in Annapolis 5
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 6
Providers in MD who bill this service to Medicare most often.
Common questions
What is Mark H. Flasar's specialty?
Mark H. Flasar is a gastroenterologist in Annapolis, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Mark H. Flasar?
Mark H. Flasar is listed at 820 Bestgate Rd Suite 2A, Annapolis, MD 21401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Mark H. Flasar?
The number on file is (410) 224-2116. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark H. Flasar's NPI number?
Mark H. Flasar's National Provider Identifier is 1326079278. 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 Mark H. Flasar's education?
Mark H. Flasar attended Other, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark H. Flasar been practicing?
Mark H. Flasar has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What is Mark H. Flasar known for?
According to Medicare billing data, Mark H. Flasar 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; provides treatments such as administration of chemotherapy into vein, 1 hour or less and administration of chemotherapy into vein, each additional hour, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark H. Flasar confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark H. Flasar. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.