Physician Profile
Unclaimed ProfileAbout MATHIS
Based in Anacortes, WA, John R Mathis, M.D. is listed in the NPI registry under internal medicine. John graduated from University of Utah School of Medicine in 1991.
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 is Dr. Mathis's specialty?
Dr. Mathis is an internal medicine in Anacortes, WA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Mathis?
Dr. Mathis is listed at 1213 24TH ST #100, Anacortes, WA 98221. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Mathis?
The number on file is (360) 293-1115. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Mathis?
Dr. Mathis's National Provider Identifier is 1780754739. 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. Mathis's medical education?
Dr. Mathis attended University of Utah School of Medicine, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mathis have?
Dr. Mathis has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Mathis known for?
According to Medicare billing data, Dr. Mathis provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only and test to examine how well the lungs exchange gases, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mathis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mathis. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (360) 293-1115
- Email not available
Practice Locations
1213 24TH ST #100
Anacortes, WA 98221
Procedures Most Often Billed to Medicare
2,003 services · 1,644 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
1,166 |
| Test to examine how well the lungs exchange gases | Treatment | 94729 |
257 |
| Test to measure expiratory airflow and volume changes before and after medication administration | Treatment | 94060 |
241 |
| Test to determine lung volumes using sensors | Treatment | 94726 |
240 |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
23 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
29 |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
24 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
23 |
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 internal medicines at this location 1
Same specialty, same street address — most likely the same department or group.
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.
More connections — 31 related providers in 4 groups
Other internal medicines in Anacortes 7
Same specialty, same city.
Trained at University of Utah School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at University of Utah School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 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.