Joseph Zachariah, MD
NPI 1548585722 · Neurocritical Care Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Zachariah, MD is a Neurocritical Care Physician provider in Grand Rapids, MI (NPI 1548585722).
Provider details
- NPI number
- 1548585722
- Entity type
- Individual
- Primary specialty
- Neurocritical Care PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 5101022391 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 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
86 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 62 | $214 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 24 | $112 |
Typical Medicare-allowed amounts for these services range $112–$214 (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
Registry dates
- Enumerated
- 2010-03-31
- Last updated
- 2025-07-29
- Certified
- 2025-07-29
Frequently asked questions
- What is Joseph Zachariah's NPI number?
- Joseph Zachariah's National Provider Identifier (NPI) is 1548585722, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Zachariah's specialty?
- Joseph Zachariah is listed in the NPPES registry with a primary specialty of Neurocritical Care Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Zachariah located?
- Joseph Zachariah's practice location on file with NPPES is 100 Michigan St Ne, Grand Rapids, MI 49503-2560.
- What is Joseph Zachariah's phone number?
- The practice phone number listed in the NPPES registry for Joseph Zachariah is (616) 391-1969.
- Does Joseph Zachariah accept Medicare?
- Joseph Zachariah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Zachariah's NPI active?
- Yes — Joseph Zachariah's NPI (1548585722) is active in the NPPES registry as of the last update on 2025-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.