John Grizzard, M.D.
NPI 1629172861 · Diagnostic Radiology Physician · Newport News, VA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Grizzard, M.D. is a Diagnostic Radiology Physician provider in Newport News, VA (NPI 1629172861).
Provider details
- NPI number
- 1629172861
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101035488 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,239 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 568 | $8 |
| X-Ray of Chest, 2 Views71046 | 127 | $10 |
| Ct Scan of Chest With Contrast71260 | 105 | $51 |
| Ct Scan of Chest Without Contrast71250 | 95 | $48 |
| Ct Scan of Chest With Contrast71260 | 90 | $51 |
| X-Ray of Chest, 2 Views71046 | 83 | $18 |
| Ct Scan of Chest Without Contrast71250 | 71 |
Practice location
Mailing address
Additional practice locations (1)
- 1250 E Marshall StreetRadiologyRichmond, VA 23298-0470Phone: (804) 828-8262Fax: (804) 828-6129
Registry dates
- Enumerated
- 2006-09-08
- Last updated
- 2021-03-04
- Certified
- 2021-03-04
Frequently asked questions
- What is John Grizzard's NPI number?
- John Grizzard's National Provider Identifier (NPI) is 1629172861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grizzard's specialty?
- John Grizzard is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Grizzard located?
- John Grizzard's practice location on file with NPPES is 500 J Clyde Morris Blvd, Newport News, VA 23601-1929.
- What is John Grizzard's phone number?
- The practice phone number listed in the NPPES registry for John Grizzard is (757) 594-2074.
- Does John Grizzard accept Medicare?
- John Grizzard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Grizzard's NPI active?
- Yes — John Grizzard's NPI (1629172861) is active in the NPPES registry as of the last update on 2021-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.