James Mast, PA-C
NPI 1093482085 · Physician Assistant · Baltimore, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Mast, PA-C is a Physician Assistant provider in Baltimore, MD (NPI 1093482085).
Provider details
- NPI number
- 1093482085
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- C0008150 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
90 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 68 | $184 |
| Critical Care, Each Additional 30 Minutes99292 | 22 | $93 |
Typical Medicare-allowed amounts for these services range $93–$184 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 9000 Franklin Square DrBaltimore, MD 21237-3901Phone: (443) 777-7000
Registry dates
- Enumerated
- 2021-08-26
- Last updated
- 2021-10-06
- Certified
- 2021-10-06
Frequently asked questions
- What is James Mast's NPI number?
- James Mast's National Provider Identifier (NPI) is 1093482085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Mast's specialty?
- James Mast is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is James Mast located?
- James Mast's practice location on file with NPPES is 3001 S Hanover St, Baltimore, MD 21225-1233.
- What is James Mast's phone number?
- The practice phone number listed in the NPPES registry for James Mast is (410) 350-3200.
- Does James Mast accept Medicare?
- James Mast is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Mast's NPI active?
- Yes — James Mast's NPI (1093482085) is active in the NPPES registry as of the last update on 2021-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.