Ronald E. Bailyn, MD
Psychiatry Physician · Portland, ME
Ronald E. Bailyn, MD is a psychiatry physician with a practice address in Portland, Maine, and NPI 1699772772, issued on Jul 5, 2005. Check the license (Maine 011874, as entered in NPPES) on the Maine Board of Licensure in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ronald E. Bailyn
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 011874 ME
Self-reported in NPPES; status is on the state search - Practice location
- 121 Middle St, Portland, ME 04101
- Phone
- (207) 772-8634
- Enumerated
- Jul 5, 2005
- Record last updated
- Oct 3, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (207) 772-1629
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 326 in Maine → Look up another NPI →
Also registered at 121 Middle St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Valerie Hart, EDD APRNAdult Psychiatric/Mental Health Registered Nurse1356451611
- Carol Niziolek, RN,MSN,CSChild & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist1619006145
- Joseph Rubin, MDPsychiatry Physician1295747798
- Barbara Wood, M.D.Psychiatry Physician1003924440
Verify Ronald E. Bailyn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 011874Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ronald E. Bailyn among 326 psychiatry physician records in Maine
Ronald E. Bailyn, MD is one of 326 psychiatry physician records with a practice address in Maine. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileNo · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 44% of these records are
- Record last updated2008 · 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 2084P0800X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
93 psychiatry physician records list a practice address in Portland
They are 93 of the 6,022 NPPES records with a practice address in Portland, and 326 psychiatry physician records in Maine. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 326 in Maine → Every provider in Portland → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jeffrey Barkin, M.D.Portland, ME 041011457391989
- Linda Cunning, D.O., M.P.H.Portland, ME 041011558392142
- George Dreher, MDPortland, ME 041011396759080
- Daniel Filene, MDPortland, ME 041011124009527
- Bernard Gordon, MDPortland, ME 041011609980515
- Catherine Jakubowitch, M.D.Portland, ME 041011891804415
- Angela Liess, MDPortland, ME 041011366554339
- Charles Mitchell, MDPortland, ME 041011700800703
Common questions
What is Ronald E. Bailyn, MD's NPI number?
Ronald E. Bailyn, MD's National Provider Identifier (NPI) is 1699772772, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald E. Bailyn, MD located?
The NPPES record lists a practice address at 121 Middle St, Portland, ME, 04101. Phone: (207) 772-8634. Providers update this record themselves, so call before visiting.
How can I verify Ronald E. Bailyn, MD's license?
NPPES lists Maine license number 011874, 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. 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.