Mark Girgis, D.O.
NPI 1679921316 · Neurology Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Girgis, D.O. is a Neurology Physician provider in Riverside, CA (NPI 1679921316).
Provider details
- NPI number
- 1679921316
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5101022184 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
613 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 261 | $173 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 174 | $118 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 82 | $79 |
| Measurement of Brain Wave Activity With Video (veeg), 2-12 Hours With Review and Report By Health Care Professional95718 | 62 | $134 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 19 | $173 |
| Measurement of Brain Wave Activity (eeg), 2-12 Hours With Health Care Professional Review and Report95717 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-02
- Last updated
- 2023-10-30
- Certified
- 2023-10-30
Frequently asked questions
- What is Mark Girgis's NPI number?
- Mark Girgis's National Provider Identifier (NPI) is 1679921316, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Girgis's specialty?
- Mark Girgis is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Girgis located?
- Mark Girgis's practice location on file with NPPES is 4445 Magnolia Ave, Riverside, CA 92501-4135.
- What is Mark Girgis's phone number?
- The practice phone number listed in the NPPES registry for Mark Girgis is (951) 338-4910.
- Does Mark Girgis accept Medicare?
- Mark Girgis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Girgis's NPI active?
- Yes — Mark Girgis's NPI (1679921316) is active in the NPPES registry as of the last update on 2023-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.