Mark Glass-Royal, M.D.
NPI 1255361887 · Diagnostic Radiology Physician · Frederick, MD
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Glass-Royal, M.D. is a Diagnostic Radiology Physician provider in Frederick, MD (NPI 1255361887).
Provider details
- NPI number
- 1255361887
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D39842 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,153 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) |
|---|---|---|
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 485 | $38 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 206 | $114 |
| Ultrasound Scan of Uterus, Ovaries, Tubes, Cervix and Pelvic Area Through Vagina76830 | 155 | $125 |
| Complete Ultrasound Scan of Abdomen76700 | 153 | $114 |
| Complete Ultrasound Scan of Pelvis76856 | 149 | $105 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 136 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2009-05-27
Frequently asked questions
- What is Mark Glass-Royal's NPI number?
- Mark Glass-Royal's National Provider Identifier (NPI) is 1255361887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Glass-Royal's specialty?
- Mark Glass-Royal is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Glass-Royal located?
- Mark Glass-Royal's practice location on file with NPPES is 400 W 7th St, Frederick, MD 21701-4506.
- What is Mark Glass-Royal's phone number?
- The practice phone number listed in the NPPES registry for Mark Glass-Royal is (240) 566-1720.
- Does Mark Glass-Royal accept Medicare?
- Mark Glass-Royal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Glass-Royal's NPI active?
- Yes — Mark Glass-Royal's NPI (1255361887) is active in the NPPES registry as of the last update on 2009-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.