Steven Grenell, M.D.
NPI 1831115872 · Neurology Physician · New York, NY
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Grenell, M.D. is a Neurology Physician provider in New York, NY (NPI 1831115872).
Provider details
- NPI number
- 1831115872
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 152900 (NY)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
141 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 93 | $204 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 28 | $140 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 20 | $155 |
Typical Medicare-allowed amounts for these services range $140–$204 (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)
- 3975 Sedgwick AveSuite 1fBronx, NY 10463-3105Phone: (718) 796-6055Fax: (718) 796-1288
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2018-02-12
Frequently asked questions
- What is Steven Grenell's NPI number?
- Steven Grenell's National Provider Identifier (NPI) is 1831115872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Grenell's specialty?
- Steven Grenell is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Grenell located?
- Steven Grenell's practice location on file with NPPES is 622 W 168th St, New York, NY 10032-3720.
- What is Steven Grenell's phone number?
- The practice phone number listed in the NPPES registry for Steven Grenell is (646) 426-3876.
- Does Steven Grenell accept Medicare?
- Steven Grenell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Grenell's NPI active?
- Yes — Steven Grenell's NPI (1831115872) is active in the NPPES registry as of the last update on 2018-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.