Timothy C. O'Brien, M.D.
Surgery Physician · Rockport, ME
Timothy C. O'Brien, M.D. is a surgery physician with a practice address in Rockport, Maine, and NPI 1962441055, issued on Jun 5, 2006. Check the license (Maine MD18627, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Timothy C. O'Brien
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- MD18627 ME
Self-reported in NPPES; status is on the state search - Practice location
- 4 Glen Cove Dr, Rockport, ME 04856
- Phone
- (207) 593-5737
- Enumerated
- Jun 5, 2006
- Record last updated
- Feb 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (207) 593-5333
- Medicare enrollment
- Enrolled (PECOS I20101104001438); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 229 in Maine → Look up another NPI →
Also registered at 4 Glen Cove Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Denise Anderson, D.O.Internal Medicine Physician1740486034
- Alice Androkites, MDDermatology Physician1053406827
- Richard Beauchesne, M.D.Orthopaedic Surgery Physician1245274604
- Susan Bell, NPFamily Nurse Practitioner1639570310
- David Bradeen, MDHospitalist Physician1417998063
- G. Chamberlin, MDOtolaryngology Physician1811932726
Verify Timothy C. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD18627Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average surgery physician in 2024
53 Medicare Part D claims for 44 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 37 claims were for opioids.
Most prescribed
- Oxycodone Hcl35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- MainehealthBiddeford, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy C. O'Brien among 229 surgery physician records in Maine
Timothy C. O'Brien, M.D. is one of 229 surgery physician records with a practice address in Maine. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1992 · median 2005 among the 121 with a school on file
- Record last updated2014 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 surgery physician records list a practice address in Rockport
They are 7 of the 387 NPPES records with a practice address in Rockport, and 229 surgery physician records in Maine.
All 229 in Maine → Every provider in Rockport → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Jordan Caffe, MDRockport, ME 048561720616659
- Douglas Cole, MDRockport, ME 048561285621359
- Thomas Crosslin, M.D.Rockport, ME 048561376779934
- Nathan Elwood, MDRockport, ME 048561942628409
- Joel Lafleur, MDRockport, ME 048561922072545
- Gordon Paine, MDRockport, ME 048561730153958
- Michael Durr, M.D.Waterville, ME 049011235286287
- George Elias, D.O.Waterville, ME 049011578809794
Common questions
What is Timothy C. O'Brien, M.D.'s NPI number?
Timothy C. O'Brien, M.D.'s National Provider Identifier (NPI) is 1962441055, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy C. O'Brien, M.D. located?
The NPPES record lists a practice address at 4 Glen Cove Dr, Rockport, ME, 04856. Phone: (207) 593-5737. Providers update this record themselves, so call before visiting.
How can I verify Timothy C. O'Brien, M.D.'s license?
NPPES lists Maine license number MD18627, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Timothy C. O'Brien, M.D. prescribe under Medicare Part D?
In 2024, Timothy C. O'Brien, M.D. had 53 Medicare Part D claims for 44 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Timothy C. O'Brien, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.