Provider Profile
Gretchen B. Mason, PA-C
Unclaimed ProfileAbout Gretchen Mason
Gretchen B. Mason, PA-C is a physician assistant practicing in Herrin, IL. Medicare claims data shows Gretchen provided 1,108 services to 683 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 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
- (618) 997-6800
- Email not available
Practice Locations
510 LINCOLN DR
Herrin, IL 62948
Procedures Most Often Billed to Medicare
1,108 services · 683 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of tunneled central venous tube | Procedure | 36589 |
11 | Less often than most peers in Physician Assistant |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | Treatment | 93005 |
11 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
578 | More than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
339 | More than most peers in Physician Assistant |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
89 | More often than most peers in Physician Assistant |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
38 | More often than most peers in Physician Assistant |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
17 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
14 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
11 | Less often than most peers in Physician Assistant |
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 physician assistants at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 physician assistants in Herrin 2
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of tunneled central venous tube 8
Providers in IL who bill this service to Medicare most often.
Common questions
What does Gretchen B. Mason specialize in?
Gretchen B. Mason is a physician assistant in Herrin, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Gretchen B. Mason located?
Gretchen B. Mason is listed at 510 Lincoln Dr, Herrin, IL 62948. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gretchen B. Mason's phone number?
The number on file is (618) 997-6800. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Gretchen B. Mason?
Gretchen B. Mason's National Provider Identifier is 1245229111. 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 Gretchen B. Mason train?
Gretchen B. Mason attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Gretchen B. Mason have?
Gretchen B. Mason has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Gretchen B. Mason do most often?
According to Medicare billing data, Gretchen B. Mason performs procedures including removal of tunneled central venous tube; provides treatments such as routine electrocardiogram using at least 12 leads with tracing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Gretchen B. Mason's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gretchen B. Mason. 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.