Robert Mason, M.D.
NPI 1639195795 · Neurological Surgery Physician · Washington, DC
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Mason, M.D. is a Neurological Surgery Physician provider in Washington, DC (NPI 1639195795).
Provider details
- NPI number
- 1639195795
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D42402 (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
257 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 59 | $181 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 58 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 53 | $139 |
| Fusion of Additional Segment of Spine22614 | 40 | $407 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 18 | $199 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2012-03-09
Frequently asked questions
- What is Robert Mason's NPI number?
- Robert Mason's National Provider Identifier (NPI) is 1639195795, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Mason's specialty?
- Robert Mason is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Mason located?
- Robert Mason's practice location on file with NPPES is 3800 Reservoir Rd, Washington, DC 20007.
- What is Robert Mason's phone number?
- The practice phone number listed in the NPPES registry for Robert Mason is (202) 444-4972.
- Does Robert Mason accept Medicare?
- Robert Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Mason's NPI active?
- Yes — Robert Mason's NPI (1639195795) is active in the NPPES registry as of the last update on 2012-03-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.