Colby W. Nixon, DO
Internal Medicine Physician · Portland, ME
Colby W. Nixon, DO is an internal medicine physician with a practice address in Portland, Maine, and NPI 1740740315, issued on Mar 21, 2019. Check the license (Maine DO3911, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Colby W. Nixon
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- DO3911 ME
292791 MA
Self-reported in NPPES; status is on the state search - Practice location
- 22 Bramhall St, Portland, ME 04102
- Phone
- (207) 662-0111
- Enumerated
- Mar 21, 2019
- Record last updated
- Sep 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20240930000429); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 22 Bramhall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Abbatiello, NP-CFamily Nurse Practitioner1871811737
- Ruslan Abdukalikov, DOAnesthesiology Physician1831694793
- Tod Abrahams, M.D.Diagnostic Radiology Physician1538231642
- Joshua Abrams, PA-CSurgical Physician Assistant1932832128
- Christopher Abruzzese, D.OAnesthesiology Physician1558789305
- Haley Acker, PA-CPhysician Assistant1972167377
Verify Colby W. Nixon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license DO3911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- MainehealthPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
145 internal medicine physician records list a practice address in Portland
They are 145 of the 6,022 NPPES records with a practice address in Portland, and 597 internal medicine physician records in Maine.
All 145 in Portland → All 597 in Maine → Every provider in Portland →
Other internal medicine physician records in Maine
- George Abboud, MDBiddeford, ME1376612945
- Karen Abernathy, M.D.Rockport, ME1124312335
- Hassan Abouleish, MDHoulton, ME1255300307
- Philip Abraham, M.D.Kittery, ME1497750764
- Elizabeth Ackerson, MDPortland, ME1912920117
- Lindsey Ackley-Pozzessere, DOBrunswick, ME1477991842
- Todd Adams, MDMoody, ME1427165778
- Muhammad Umer Ahmed, MDBangor, ME1134893183
- Samer Al-Ameri, MDBangor, ME1225514854
- Ali Al-OmariBangor, ME1447634431
Common questions
What is Colby W. Nixon, DO's NPI number?
Colby W. Nixon, DO's National Provider Identifier (NPI) is 1740740315, issued on Mar 21, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Colby W. Nixon, DO located?
The NPPES record lists a practice address at 22 Bramhall St, Portland, ME, 04102. Phone: (207) 662-0111. Providers update this record themselves, so call before visiting.
How can I verify Colby W. Nixon, DO's license?
NPPES lists Maine license number DO3911, 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.
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.