Gregory Vassilev, MD
NPI 1073539748 · Pain Medicine (Anesthesiology) Physician · Van Nuys, CA
Enrolled with Medicare as Practitioner - Pain Management · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Vassilev, MD is a Pain Medicine (Anesthesiology) Physician provider in Van Nuys, CA (NPI 1073539748).
Provider details
- NPI number
- 1073539748
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A63560 (CA)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,281 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,574 | $132 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 188 | $179 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 146 | $154 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Each Additional Level64484 | 103 | $66 |
| Injection of Lower Or Sacral Spine Facet Joint Using Imaging Guidance, Single Level64493 | 61 | $141 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 499 | 95 |
| Tramadol Hcl | 440 | 161 |
| Pregabalin | 324 | 93 |
| Gabapentin | 304 | 85 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 285 | 67 |
| Meloxicam | 281 | 86 |
| Celecoxib |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,426 across 51 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 (1)
- 4929 Van Nuys BlvdSherman Oaks, CA 91403-1702Phone: (818) 981-7111
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2022-06-06
- Certified
- 2022-06-06
Frequently asked questions
- What is Gregory Vassilev's NPI number?
- Gregory Vassilev's National Provider Identifier (NPI) is 1073539748, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Vassilev's specialty?
- Gregory Vassilev is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Vassilev located?
- Gregory Vassilev's practice location on file with NPPES is 6815 Noble Ave, Van Nuys, CA 91405-3796.
- What is Gregory Vassilev's phone number?
- The practice phone number listed in the NPPES registry for Gregory Vassilev is (818) 901-6600.
- Does Gregory Vassilev accept Medicare?
- Gregory Vassilev is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Vassilev's NPI active?
- Yes — Gregory Vassilev's NPI (1073539748) is active in the NPPES registry as of the last update on 2022-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.