Christopher Foss, MD
NPI 1629431044 · Hematology & Oncology Physician · Santa Clarita, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Foss, MD is a Hematology & Oncology Physician provider in Santa Clarita, CA (NPI 1629431044).
Provider details
- NPI number
- 1629431044
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A155463 (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
10 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
801 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 199 | $96 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 167 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 134 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 93 | $134 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 71 | $190 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 140 | 37 |
| Prednisone | 73 | 18 |
| Apixabanbrand: Eliquis | 53 | 12 |
| Loperamide Hclbrand: Loperamide | 39 | 21 |
| Abiraterone Acetate | 32 | — |
| Lidocaine/Prilocainebrand: Lidocaine-Prilocaine | 31 | 17 |
| Acyclovir | 30 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,354 across 56 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
- 2016-04-02
- Last updated
- 2025-03-13
- Certified
- 2025-03-13
Frequently asked questions
- What is Christopher Foss's NPI number?
- Christopher Foss's National Provider Identifier (NPI) is 1629431044, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Foss's specialty?
- Christopher Foss is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Foss located?
- Christopher Foss's practice location on file with NPPES is 25751 Mcbean Pkwy, Santa Clarita, CA 91355-3701.
- What is Christopher Foss's phone number?
- The practice phone number listed in the NPPES registry for Christopher Foss is (661) 839-1801.
- Does Christopher Foss accept Medicare?
- Christopher Foss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Foss's NPI active?
- Yes — Christopher Foss's NPI (1629431044) is active in the NPPES registry as of the last update on 2025-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.