Physician Profile
Mathew S. Isho, MD
Unclaimed ProfileAbout Dr. Isho
Based in San Diego, CA, Mathew S. Isho, MD is listed in the NPI registry under colon & rectal surgery. Medicare claims data shows Mathew provided 595 services to 555 patients. The services billed most often include new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more, diagnostic exam of anus using an endoscope, and established patient office or other outpatient visit with low level od decision making, if using time, 20 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
- (619) 686-4011
- Email not available
Practice Locations
550 WASHINGTON ST SUITE 821
San Diego, CA 92103
Procedures Most Often Billed to Medicare
595 services · 555 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
116 | More than most peers in Colon & Rectal Surgery |
| Removal of external hemorrhoids by rubber banding | Procedure | 46221 |
39 | More often than most peers in Colon & Rectal Surgery |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
28 | As often as other peers in Colon & Rectal Surgery |
| Diagnostic exam of lower portion of large bowel using a flexible endoscope | Procedure | 45330 |
17 | As often as other 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 |
130 | More 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 |
70 | More often than most peers in Colon & Rectal Surgery |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
48 | 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 |
47 | More often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
39 | More often than most peers in Colon & Rectal Surgery |
| Telephone medical discussion with physician, 5-10 minutes | Office visit | 99441 |
31 |
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.
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 San Diego 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1994 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of anus using an endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Isho's specialty?
Dr. Isho is a colorectal surgeon in San Diego, CA. 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. Isho?
Dr. Isho is listed at 550 Washington St Suite 821, San Diego, CA 92103. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Isho?
The number on file is (619) 686-4011. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Isho?
Dr. Isho's National Provider Identifier is 1841235645. 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. Isho's medical education?
Dr. Isho attended Other, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Isho have?
Dr. Isho has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Isho known for?
According to Medicare billing data, Dr. Isho performs procedures including diagnostic exam of anus using an endoscope, removal of external hemorrhoids by rubber banding 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
Is Dr. Isho's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Isho. 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.