Physician Profile
John A. Griffin, M.D.
Unclaimed ProfileAbout Dr. Griffin
John A. Griffin, M.D. practices colon & rectal surgery in Loma Linda, CA. Medicare claims data shows John provided 218 services to 181 patients. 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, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and diagnostic exam of anus using an endoscope.
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
Source: NPPES NPI Registry
Contact Information
- (909) 558-2822
- Email not available
Practice Locations
11370 ANDERSON ST STE 2100
Loma Linda, CA 92354
Procedures Most Often Billed to Medicare
218 services · 181 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
40 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
25 |
| Removal of external hemorrhoids by rubber banding | Procedure | 46221 |
19 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
49 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
47 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
14 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
12 |
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 7
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 Loma Linda 3
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 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 kind of doctor is John A. Griffin?
John A. Griffin is a colorectal surgeon in Loma Linda, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
What is John A. Griffin's address?
John A. Griffin is listed at 11370 Anderson St Ste 2100, Loma Linda, CA 92354. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with John A. Griffin?
The number on file is (909) 558-2822. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for John A. Griffin?
John A. Griffin's National Provider Identifier is 1821014903. 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 John A. Griffin train?
John A. Griffin attended Other, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John A. Griffin have?
John A. Griffin has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What procedures does John A. Griffin perform?
According to Medicare billing data, John A. Griffin performs procedures including diagnostic exam of anus using an endoscope, biopsy of large bowel using a flexible endoscope and removal of external hemorrhoids by rubber banding, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John A. Griffin's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John A. Griffin. 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.