Gregory Senofsky, MD
NPI 1982792891 · Surgical Oncology Physician · Santa Clarita, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Senofsky, MD is a Surgical Oncology Physician provider in Santa Clarita, CA (NPI 1982792891).
Provider details
- NPI number
- 1982792891
- Entity type
- Individual
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A42817 (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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
507 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 | 257 | $142 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 55 | $179 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $98 |
| Repair of Wound of Trunk By Transferring Skin, 10.1-30.0 Sq Cm14001 | 34 | $581 |
| Partial Removal of Breast19301 | 28 | $467 |
| Imaging of Lymph Nodes During Surgery38900 |
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 |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 42 | 42 |
| Cephalexin | 33 | 30 |
| Tramadol Hcl | 30 | 29 |
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$338 across 3 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 (2)
- 15503 Ventura Blvd Ste 150Encino, CA 91436-3115Phone: (818) 995-8044Fax: (818) 995-8007
- 19950 Rinaldi St Ste 310Porter Ranch, CA 91326-4141Phone: (818) 271-2500Fax: (818) 271-2501
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2019-12-27
- Certified
- 2019-12-27
Frequently asked questions
- What is Gregory Senofsky's NPI number?
- Gregory Senofsky's National Provider Identifier (NPI) is 1982792891, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Senofsky's specialty?
- Gregory Senofsky is listed in the NPPES registry with a primary specialty of Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Senofsky located?
- Gregory Senofsky's practice location on file with NPPES is 27235 Tourney Rd Ste 2400, Santa Clarita, CA 91355-5905.
- What is Gregory Senofsky's phone number?
- The practice phone number listed in the NPPES registry for Gregory Senofsky is (661) 255-9287.
- Does Gregory Senofsky accept Medicare?
- Gregory Senofsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Senofsky's NPI active?
- Yes — Gregory Senofsky's NPI (1982792891) is active in the NPPES registry as of the last update on 2019-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.