Gregory Zaharchuck, MD
NPI 1376653675 · Diagnostic Neuroimaging (Radiology) Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Zaharchuck, MD is a Diagnostic Neuroimaging (Radiology) Physician provider in Stanford, CA (NPI 1376653675).
Provider details
- NPI number
- 1376653675
- Entity type
- Individual
- Primary specialty
- Diagnostic Neuroimaging (Radiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A77063 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,317 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 433 | $44 |
| Ct Scan of Upper Spine Without Contrast72125 | 140 | $52 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 117 | $88 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 106 | $92 |
| Mri Scan of Brain Before and After Contrast70553 | 90 | $119 |
| Mri Scan of Blood Vessels of Head Without Contrast70544 | 82 | $63 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$141 across 2 records (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
- 2006-08-30
- Last updated
- 2024-04-05
- Certified
- 2024-04-05
Frequently asked questions
- What is Gregory Zaharchuck's NPI number?
- Gregory Zaharchuck's National Provider Identifier (NPI) is 1376653675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Zaharchuck's specialty?
- Gregory Zaharchuck is listed in the NPPES registry with a primary specialty of Diagnostic Neuroimaging (Radiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Zaharchuck located?
- Gregory Zaharchuck's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Gregory Zaharchuck's phone number?
- The practice phone number listed in the NPPES registry for Gregory Zaharchuck is (650) 723-4000.
- Does Gregory Zaharchuck accept Medicare?
- Gregory Zaharchuck is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Zaharchuck's NPI active?
- Yes — Gregory Zaharchuck's NPI (1376653675) is active in the NPPES registry as of the last update on 2024-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.