Provider Profile
William J Mast, FNP-C
Unclaimed ProfileAbout William Mast
William J Mast, FNP-C is a nurse practitioner based in Greenville, TX. William is also listed as specializing in nurse practitioner — family. Medicare claims data shows William provided 7,685 services to 4,209 patients.
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
- (903) 455-1100
- Email not available
Practice Locations
3900 JOE RAMSEY BLVD E STE 6
Greenville, TX 75401
Procedures Most Often Billed to Medicare
7,685 services · 4,209 patients · 21 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
2,557 |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
1,013 |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
735 |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
681 |
| Biopsy of related skin growth, each additional growth | Procedure | 11103 |
231 |
| Destruction of precancer skin growth, 15 or more growths | Procedure | 17004 |
63 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | Procedure | 12032 |
46 |
| Destruction of skin growth, 15 or more growths | Procedure | 17111 |
43 |
| Simple or single drainage of skin abscess | Procedure | 10060 |
43 |
| Biopsy of ear | Procedure | 69100 |
37 |
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 nurse practitioners at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
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 — 32 related providers in 4 groups
Other nurse practitioners in Greenville 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2022 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Destruction of precancer skin growth, 2-14 growths 8
Providers in TX who bill this service to Medicare most often.
Common questions
What is Dr. Mast's specialty?
Dr. Mast is a nurse practitioner in Greenville, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NURSE PRACTITIONER”.
NPI registry
Where can I find Dr. Mast?
Dr. Mast is listed at 3900 JOE RAMSEY BLVD E STE 6, Greenville, TX 75401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Mast?
The number on file is (903) 455-1100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Mast?
Dr. Mast's National Provider Identifier is 1659089811. 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. Mast's medical education?
Dr. Mast attended Other, graduating in 2022. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mast have?
Dr. Mast has 4 years experience. Calculated from a graduation year of 2022, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Mast known for?
According to Medicare billing data, Dr. Mast performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and destruction of skin growth, 1-14 growths, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mast's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mast. 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.