Frederick Grois, M.D.
NPI 1528137841 · Anesthesiology Physician · Manassas, VA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Grois, M.D. is a Anesthesiology Physician provider in Manassas, VA (NPI 1528137841).
Provider details
- NPI number
- 1528137841
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101240534 (VA)
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
293 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 75 | $99 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 51 | $282 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 44 | $66 |
| Ultrasonic Guidance for Needle Placement76942 | 44 | $32 |
| Other Procedure on Nervous System64999 | 38 | $24 |
| Anesthesia for Total Hip Replacement01214 | 18 | $326 |
| Anesthesia for Other Procedure on Forearm, Wrist, Or Hand Bones |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-08
- Last updated
- 2017-04-07
Frequently asked questions
- What is Frederick Grois's NPI number?
- Frederick Grois's National Provider Identifier (NPI) is 1528137841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Grois's specialty?
- Frederick Grois is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Grois located?
- Frederick Grois's practice location on file with NPPES is 8700 Sudley Rd, Manassas, VA 20110-4418.
- What is Frederick Grois's phone number?
- The practice phone number listed in the NPPES registry for Frederick Grois is (703) 369-8000.
- Does Frederick Grois accept Medicare?
- Frederick Grois is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Grois's NPI active?
- Yes — Frederick Grois's NPI (1528137841) is active in the NPPES registry as of the last update on 2017-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.