Physician Profile
Marc J. Casasanta, MD
Unclaimed ProfileAbout Dr. Casasanta
Marc J. Casasanta, MD is a healthcare provider in Danbury, CT specializing in colon & rectal surgery. Marc trained at New York Medical College, graduating in 2008. According to Medicare claims data, Marc cared for 227 Medicare patients across 275 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, removal of external hemorrhoids by rubber banding, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (203) 739-7131
- Email not available
Practice Locations
111 OSBORNE ST STE 111
Danbury, CT 06810
170 Maple Ave Suite 502
White Plains, NY 10601
Procedures Most Often Billed to Medicare
275 services · 227 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of external hemorrhoids by rubber banding | Procedure | 46221 |
46 | More often than most peers in Colon & Rectal Surgery |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
28 | As often as other peers in Colon & Rectal Surgery |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
14 | Less often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
79 | More often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
39 | More often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
30 | As often as other peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
20 | Less often than most peers in Colon & Rectal Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
19 | As often as other peers in Colon & Rectal 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.
Related specialists at this location 8
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 colorectal surgeons in Danbury 2
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at New York Medical College 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at New York Medical College 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of external hemorrhoids by rubber banding 7
Providers in CT who bill this service to Medicare most often.
Common questions
What is Dr. Casasanta's specialty?
Dr. Casasanta is a colorectal surgeon in Danbury, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
Where can I find Dr. Casasanta?
Dr. Casasanta is listed at 111 Osborne St Ste 111, Danbury, CT 06810. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Casasanta?
The number on file is (203) 739-7131. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Casasanta's NPI number?
Dr. Casasanta's National Provider Identifier is 1124281530. 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 Dr. Casasanta's medical education?
Dr. Casasanta attended New York Medical College, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Casasanta been practicing?
Dr. Casasanta has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Casasanta known for?
According to Medicare billing data, Dr. Casasanta performs procedures including removal of external hemorrhoids by rubber banding, diagnostic exam of anus using an endoscope and biopsy of large 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 Dr. Casasanta confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Casasanta. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.