Nikolaos Vassiliou, MD
NPI 1851554349 · Family Medicine Physician · Cromwell, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nikolaos Vassiliou, MD is a Family Medicine Physician provider in Cromwell, CT (NPI 1851554349).
Provider details
- NPI number
- 1851554349
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 050996 (CT)
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
17 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
276 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 91 | $137 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 50 | $142 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 35 | $21 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 28 | $195 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 26 | $95 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians and |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 209 | 50 |
| Atorvastatin Calcium | 207 | 52 |
| Levothyroxine Sodium | 200 | 44 |
| Lisinopril | 138 | 32 |
| Metformin Hcl | 117 | 27 |
| Tamsulosin Hcl | 105 | 23 |
| Escitalopram Oxalate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-07
- Last updated
- 2025-11-05
- Certified
- 2025-11-05
Frequently asked questions
- What is Nikolaos Vassiliou's NPI number?
- Nikolaos Vassiliou's National Provider Identifier (NPI) is 1851554349, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nikolaos Vassiliou's specialty?
- Nikolaos Vassiliou is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nikolaos Vassiliou located?
- Nikolaos Vassiliou's practice location on file with NPPES is 70 Shunpike Rd, Cromwell, CT 06416.
- What is Nikolaos Vassiliou's phone number?
- The practice phone number listed in the NPPES registry for Nikolaos Vassiliou is (860) 358-5280.
- Does Nikolaos Vassiliou accept Medicare?
- Nikolaos Vassiliou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nikolaos Vassiliou's NPI active?
- Yes — Nikolaos Vassiliou's NPI (1851554349) is active in the NPPES registry as of the last update on 2025-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.