Photios Michael Frank Vassilyadi, MD
NPI 1821519257 · Internal Medicine Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Photios Michael Frank Vassilyadi, MD is a Internal Medicine Physician provider in Nashville, TN (NPI 1821519257).
Provider details
- NPI number
- 1821519257
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 60958 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 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
1,920 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 396 | $76 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 332 | $115 |
| Hemoglobin A1c Level83036 | 175 | $9 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 152 | $167 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $85 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 122 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 243 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 801 | 225 |
| Levothyroxine Sodium | 659 | 166 |
| Amlodipine Besylate | 529 | 146 |
| Lisinopril | 491 | 136 |
| Gabapentin | 485 | 109 |
| Furosemide | 454 | 150 |
| Omeprazole | 435 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$635 across 23 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
- 2017-07-06
- Last updated
- 2026-06-03
- Certified
- 2026-06-03
Frequently asked questions
- What is Photios Michael Frank Vassilyadi's NPI number?
- Photios Michael Frank Vassilyadi's National Provider Identifier (NPI) is 1821519257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Photios Michael Frank Vassilyadi's specialty?
- Photios Michael Frank Vassilyadi is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Photios Michael Frank Vassilyadi located?
- Photios Michael Frank Vassilyadi's practice location on file with NPPES is 315 Deaderick St Ste 1550, Nashville, TN 37238-3003.
- What is Photios Michael Frank Vassilyadi's phone number?
- The practice phone number listed in the NPPES registry for Photios Michael Frank Vassilyadi is (888) 803-3370.
- Does Photios Michael Frank Vassilyadi accept Medicare?
- Photios Michael Frank Vassilyadi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Photios Michael Frank Vassilyadi's NPI active?
- Yes — Photios Michael Frank Vassilyadi's NPI (1821519257) is active in the NPPES registry as of the last update on 2026-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.