Provider Profile
Dallas L. Mastin, FNP-BC FNP-C
Unclaimed ProfileAbout Dallas Mastin
Dallas L. Mastin, FNP-BC FNP-C is a nurse practitioner based in Milford, DE. Dallas is also listed as specializing in registered nurse and nurse practitioner — family. According to Medicare claims data, Dallas cared for 57 Medicare patients across 57 services. The services billed most often include initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes and subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes. The provider's National Provider Identifier (NPI) is 1255929022.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (302) 943-3637
- Email not available
Practice Locations
100 WELLNESS WAY
Milford, DE 19963
209 Beaufort Ln
Milford, DE 19963
Procedures Most Often Billed to Medicare
57 services · 57 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
41 | More often than most peers in Nurse Practitioner |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
16 | Less often than most peers in Nurse Practitioner |
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 7
Same specialty, same street address — most likely the same department or group.
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.
More connections — 23 related providers in 3 groups
Other nurse practitioners in Milford 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2020 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dallas L. Mastin specialize in?
Dallas L. Mastin is a nurse practitioner in Milford, DE. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dallas L. Mastin located?
Dallas L. Mastin is listed at 100 Wellness Way, Milford, DE 19963. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dallas L. Mastin's phone number?
The number on file is (302) 943-3637. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dallas L. Mastin's NPI number?
Dallas L. Mastin's National Provider Identifier is 1255929022. 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 Dallas L. Mastin train?
Dallas L. Mastin attended Other, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
How long has Dallas L. Mastin been practicing?
Dallas L. Mastin has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
What does Dallas L. Mastin do most often?
According to Medicare billing data, Dallas L. Mastin the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dallas L. Mastin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dallas L. Mastin. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.