Physician Profile
Unclaimed ProfileAbout MASON
Ronald E Mason, MD is a healthcare provider in Kirkland, WA specialising in gastroenterology. Ronald trained at University of Alabama School of Medicine, graduating in 1986.
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
Areas of Expertise
Common questions
What does Dr. Mason specialise in?
Dr. Mason is a gastroenterology in Kirkland, WA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where is Dr. Mason located?
Dr. Mason is listed at 11800 NE 128TH ST SUITE 100, Kirkland, WA 98034. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mason's phone number?
The number on file is (425) 899-4500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mason's NPI number?
Dr. Mason's National Provider Identifier is 1124088430. 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 Dr. Mason go to medical school?
Dr. Mason attended University of Alabama School of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Mason been practising?
Dr. Mason has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Mason do most often?
According to Medicare billing data, Dr. Mason performs procedures including biopsy of large bowel using a flexible endoscope, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 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
Has Dr. Mason confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mason. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (425) 899-4500
- Email not available
Practice Locations
11800 NE 128TH ST SUITE 100
Kirkland, WA 98034
Procedures Most Often Billed to Medicare
356 services · 338 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
96 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
36 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
35 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
74 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
48 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
40 |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
16 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
11 |
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 gastroenterology specialists at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 26 related providers in 4 groups
Other gastroenterology specialists in Kirkland 2
Same specialty, same city.
Trained at University of Alabama School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at University of Alabama School of Medicine 8
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 WA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.