Giorgos Hadjivassiliou, MBBS
NPI 1215342621 · Internal Medicine Physician · Alexandria, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Giorgos Hadjivassiliou, MBBS is a Internal Medicine Physician provider in Alexandria, VA (NPI 1215342621).
Provider details
- NPI number
- 1215342621
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MBBS
- Sex
- Male
- Sole proprietor
- No
- License
- 0101267728 (VA)
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 tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 37 | 13 |
| Atorvastatin Calcium | 21 | 13 |
| Pantoprazole Sodium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 801 N 29th StBillings, MT 59101-0905Phone: (406) 238-5310
Registry dates
- Enumerated
- 2014-06-24
- Last updated
- 2019-09-13
Frequently asked questions
- What is Giorgos Hadjivassiliou's NPI number?
- Giorgos Hadjivassiliou's National Provider Identifier (NPI) is 1215342621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Giorgos Hadjivassiliou's specialty?
- Giorgos Hadjivassiliou is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Giorgos Hadjivassiliou located?
- Giorgos Hadjivassiliou's practice location on file with NPPES is 6677 Richmond Hwy, Alexandria, VA 22306-6647.
- What is Giorgos Hadjivassiliou's phone number?
- The practice phone number listed in the NPPES registry for Giorgos Hadjivassiliou is (703) 535-5568.
- Does Giorgos Hadjivassiliou accept Medicare?
- Giorgos Hadjivassiliou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Giorgos Hadjivassiliou's NPI active?
- Yes — Giorgos Hadjivassiliou's NPI (1215342621) is active in the NPPES registry as of the last update on 2019-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.