Darin Chambers, M.D.
NPI 1316108053 · Family Medicine Physician · Oxnard, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Darin Chambers, M.D. is a Family Medicine Physician provider in Oxnard, CA (NPI 1316108053).
Provider details
- NPI number
- 1316108053
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A107109 (CA)
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
18 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
123 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 55 | $2 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 32 | $68 |
| X-Ray of Chest, 2 Views71046 | 19 | $28 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 17 | $60 |
Typical Medicare-allowed amounts for these services range $2–$68 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 93 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 233 | 66 |
| Atorvastatin Calcium | 158 | 46 |
| Losartan Potassium | 151 | 46 |
| Omeprazole | 143 | 37 |
| Amlodipine Besylate | 109 | 34 |
| Lisinopril | 103 | 32 |
| Ketoconazole | 92 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$96 across 5 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)
- 325 W. ChannelOxnard, CA 93033Phone: (805) 204-9500
- 300 Hillmont Ave Ste 302Ventura, CA 93003-1651Phone: (805) 652-6000
Registry dates
- Enumerated
- 2008-06-24
- Last updated
- 2023-07-10
- Certified
- 2023-07-10
Frequently asked questions
- What is Darin Chambers's NPI number?
- Darin Chambers's National Provider Identifier (NPI) is 1316108053, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darin Chambers's specialty?
- Darin Chambers is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Darin Chambers located?
- Darin Chambers's practice location on file with NPPES is 2400 S C St, Oxnard, CA 93033.
- What is Darin Chambers's phone number?
- The practice phone number listed in the NPPES registry for Darin Chambers is (805) 240-7000.
- Does Darin Chambers accept Medicare?
- Darin Chambers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Darin Chambers's NPI active?
- Yes — Darin Chambers's NPI (1316108053) is active in the NPPES registry as of the last update on 2023-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.