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Edit this profileDavid K. Trefflich, MD is a healthcare provider in Santa Maria, CA specializing in internal medicine. David trained at University of California, Irvine, California College of Medicine, graduating in 2013. According to Medicare claims data, David cared for 124 Medicare patients across 187 services. The services billed most often include hemoglobin a1c level, x-ray of chest, 2 views, and routine electrocardiogram (ecg) using at least 12 leads with tracing. This provider record is associated with NPI 1861836942.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
430 S BLOSSER RD
Santa Maria, CA 93458
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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187 services · 124 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 2 views | Imaging | 71046 |
31 | As often as other peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | Treatment | 93005 |
11 | Less often than most peers in Internal Medicine |
| Hemoglobin a1c level | Lab test | 83036 |
145 | More often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Trefflich is an internist in Santa Maria, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Trefflich is listed at 430 S Blosser Rd, Santa Maria, CA 93458. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (805) 361-8900. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Trefflich's National Provider Identifier is 1861836942. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Trefflich attended University of California, Irvine, California College of Medicine, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
Dr. Trefflich has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Trefflich performs imaging including x-ray of chest, 2 views; provides treatments such as routine electrocardiogram using at least 12 leads with tracing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Trefflich. If this is you, claiming it is free.
Guide.md
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