Daniel Mast, D.O.
NPI 1104910140 · Internal Medicine Physician · Lancaster, PA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Mast, D.O. is a Internal Medicine Physician provider in Lancaster, PA (NPI 1104910140).
Provider details
- NPI number
- 1104910140
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- C2-0012667 (DE)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 125 | 42 |
| Gabapentin | 102 | 26 |
| Omeprazole | 78 | 22 |
| Dulaglutidebrand: Trulicity | 72 | 15 |
| Lisinopril | 71 | 27 |
| Amlodipine Besylate | 63 | 21 |
| Albuterol Sulfate |
Practice location
Mailing address
Additional practice locations (1)
- 700 W Lea BlvdSuite 300Wilmington, DE 19802-2546Phone: (302) 320-4050Fax: (302) 762-3705
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2021-06-04
- Certified
- 2021-06-04
Frequently asked questions
- What is Daniel Mast's NPI number?
- Daniel Mast's National Provider Identifier (NPI) is 1104910140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Mast's specialty?
- Daniel Mast is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Mast located?
- Daniel Mast's practice location on file with NPPES is 802 New Holland Ave Ste 200, Lancaster, PA 17602-2288.
- What is Daniel Mast's phone number?
- The practice phone number listed in the NPPES registry for Daniel Mast is (717) 299-6371.
- Does Daniel Mast accept Medicare?
- Daniel Mast is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Mast's NPI active?
- Yes — Daniel Mast's NPI (1104910140) is active in the NPPES registry as of the last update on 2021-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.