John Hamilton, M.D., PHD
NPI 1235191248 · Neurological Surgery Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hamilton, M.D., PHD is a Neurological Surgery Physician provider in Fairfax, VA (NPI 1235191248).
Provider details
- NPI number
- 1235191248
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 237651 (NY)
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 tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
959 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 245 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 151 | $105 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 111 | $144 |
| Fusion of Additional Segment of Spine22614 | 65 | $400 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 62 | $183 |
| Insertion of Cage Or Mesh Device to Spine Bone and Disc Space During Spine Fusion22853 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$767 across 8 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
Additional practice locations (2)
- 8503 Arlington BlvdSuite 200Fairfax, VA 22031-4628Phone: (703) 970-2670Fax: (703) 970-0204
- 44055 Riverside Pkwy Ste 220Leesburg, VA 20176-5177Phone: (571) 472-4100Fax: (571) 471-4101
Registry dates
- Enumerated
- 2006-04-05
- Last updated
- 2022-12-19
- Certified
- 2022-12-19
Frequently asked questions
- What is John Hamilton's NPI number?
- John Hamilton's National Provider Identifier (NPI) is 1235191248, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hamilton's specialty?
- John Hamilton is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Hamilton located?
- John Hamilton's practice location on file with NPPES is 8081 Innovation Park Dr Ste 900, Fairfax, VA 22031-4867.
- What is John Hamilton's phone number?
- The practice phone number listed in the NPPES registry for John Hamilton is (571) 472-4100.
- Does John Hamilton accept Medicare?
- John Hamilton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hamilton's NPI active?
- Yes — John Hamilton's NPI (1235191248) is active in the NPPES registry as of the last update on 2022-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.