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Edit this profileDaniel O'Brien, M.D. practices anesthesiology in Fitchburg, MA. According to Medicare claims data, Daniel cared for 198 Medicare patients across 202 services. The services billed most often include anesthesia for lens surgery, anesthesia for exam of colon using an endoscope, and anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope. The provider's National Provider Identifier (NPI) is 1033144852.
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.
326 NICHOLS RD SUITE 16
Fitchburg, MA 01420
Within Anesthesiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Anesthesia complications
Back & spine
Chronic pain
Facial & jaw pain
General pain
Head & facial pain
Headaches
Joint pain
Mental health
Muscle pain
Musculoskeletal pain
Nerve pain
Pelvic pain
Post-surgery recovery
Sedation & anesthesia
Spine pain
Ablation
Head & facial procedures
Implants & devices
Infusion therapies
Infusion therapy
Joint injections
Muscle injections
Nerve blocks
Nerve injections
Nerve procedures
Pain relief procedures
Regional anesthesia
Sedation
Sedation & anesthesia
Spine injections
Spine procedures
202 services · 198 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Anesthesia for lens surgery | Anaesthesia | 00142 |
103 | More often than most peers in Anesthesiology |
| Anesthesia for exam of colon using an endoscope | Anaesthesia | 00812 |
36 | More often than most peers in Anesthesiology |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | Anaesthesia | 00731 |
27 | As often as other peers in Anesthesiology |
| Anesthesia for other procedure on large bowel using an endoscope | Anaesthesia | 00811 |
22 | As often as other peers in Anesthesiology |
| Anesthesia for procedure on small and large bowel using an endoscope | Anaesthesia | 00813 |
14 | Less often than most peers in Anesthesiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Daniel O'Brien is an anesthesiologist in Fitchburg, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Anesthesiology”.
NPI registry
Daniel O'Brien is listed at 326 Nichols Rd Suite 16, Fitchburg, MA 01420. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (978) 665-5800. Contact the office directly to confirm availability and scheduling.
NPI registry
Daniel O'Brien's National Provider Identifier is 1033144852. 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
Daniel O'Brien attended Other, graduating in 1975. This comes from the CMS National Downloadable File.
CMS public data
Daniel O'Brien has 51 years experience. Calculated from a graduation year of 1975, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Daniel O'Brien provides treatments such as anesthesia for lens surgery and anesthesia for exam of colon using an endoscope. 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 Daniel O'Brien. If this is you, claiming it is free.
Guide.md
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