Gregory Vassilev, MD
Pain Medicine (Anesthesiology) Physician · Van Nuys, CA
Gregory Vassilev, MD is a pain medicine (anesthesiology) physician with a practice address in Van Nuys, California, and NPI 1073539748, issued on Jul 14, 2006. Check the license (California A63560, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Vassilev
- Credential
- MD
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License number
- A63560 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6815 Noble Ave, Van Nuys, CA 91405
- Phone
- (818) 901-6600
- Enumerated
- Jul 14, 2006
- Record last updated
- Jun 6, 2022
- Medicaid ID
- 00A635600 CA
- Medicare enrollment
- Enrolled (PECOS I20040312000343); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 536 in California → Look up another NPI →
Also registered at 6815 Noble Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jan Matthew Angeles, NPNurse Practitioner1942989801
- David Auerbach, M.D.Orthopaedic Hand Surgery Physician1851320352
- Michael Bahk, M.D.Orthopaedic Surgery Physician1518012335
Verify Gregory Vassilev in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63560Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average pain medicine (anesthesiology) physician in 2024
3,887 Medicare Part D claims for 420 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 1,650 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen499 claims
- Tramadol Hcl440 claims
- Pregabalin324 claims
- Gabapentin304 claims
- Oxycodone-Acetaminophen285 claims
- Meloxicam281 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,425.82
51 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 2,789 providers of this specialty with any payment received $3,225.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Vassilev among 536 pain medicine (anesthesiology) physician records in California
Gregory Vassilev, MD is one of 536 pain medicine (anesthesiology) physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 57% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1995 · median 2004 among the 367 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in California
There are 536 pain medicine (anesthesiology) physician records in California.
All 536 in California → Every provider in Van Nuys → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- Wanda Zee Cheng, D.O.Van Nuys, CA 914051851367676
- Daniel Orlovich, M.D., PHARM. D.Van Nuys, CA 914051891072070
- Kenneth Thomas, M.D.Van Nuys, CA 914051689626566
- Craig Chang, M.D.Panorama City, CA 914021437181807
- Gary Pastushenko, M.D.Panorama City, CA 914021760680417
- Daryl Wong, D.O.Panorama City, CA 914021679563498
- Jeffrey Glaser, MDEncino, CA 914361154357010
- Sanjiv Jain, M.D.Encino, CA 914361477594067
Common questions
What is Gregory Vassilev, MD's NPI number?
Gregory Vassilev, MD's National Provider Identifier (NPI) is 1073539748, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Vassilev, MD located?
The NPPES record lists a practice address at 6815 Noble Ave, Van Nuys, CA, 91405. Phone: (818) 901-6600. Providers update this record themselves, so call before visiting.
How can I verify Gregory Vassilev, MD's license?
NPPES lists California license number A63560, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Vassilev, MD prescribe under Medicare Part D?
In 2024, Gregory Vassilev, MD had 3,887 Medicare Part D claims for 420 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. Part D covers Medicare prescriptions only.
What is Gregory Vassilev, MD's MIPS final score?
The 2023 MIPS final score is 77.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.