Mark Joshua Gatmaitan Bernardo, DO
Psychiatry Physician · Portland, ME
Mark Joshua Gatmaitan Bernardo, DO is a psychiatry physician with a practice address in Portland, Maine, and NPI 1245816602, issued on Mar 24, 2021. Check the license (Maine DO4070, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Joshua Gatmaitan Bernardo
- Credential
- DO
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- DO4070 ME
Self-reported in NPPES; status is on the state search - Practice location
- 22 Bramhall St, Portland, ME 04102
- Phone
- (207) 662-0111
- Enumerated
- Mar 24, 2021
- Record last updated
- May 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20251121001229); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2021
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 326 in Maine → Look up another NPI →
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 Mark Joshua Gatmaitan Bernardo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license DO4070Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average psychiatry physician in 2024
510 Medicare Part D claims for 51 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Bupropion Xl49 claims
- Clonazepam40 claims
- Sertraline Hcl36 claims
- Trazodone Hcl36 claims
- Gabapentin33 claims
- Lorazepam24 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.
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).
Mark Joshua Gatmaitan Bernardo among 326 psychiatry physician records in Maine
Mark Joshua Gatmaitan Bernardo, DO 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. Its NPI, issued in 2021, is newer than 95% of them.
- NPI issued2021 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated2021 · median 2003 among the 142 with a school on file
- Record last updated2025 · 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.
All 326 in Maine → Every provider in Portland → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Cindy Boyack, MDPortland, ME 041021558470781
- Benjamin Crocker, MDPortland, ME 041021841297009
- Glenn Currier, MDPortland, ME 041021194753012
- Linda Durst, MDPortland, ME 041021396718540
- Gerald FlorezaPortland, ME 041021740399641
- Michael Garnett, MDPortland, ME 041021528172699
- Rosalind Gold, MDPortland, ME 041021902816291
- George McNeil, MDPortland, ME 041021376553552
Common questions
What is Mark Joshua Gatmaitan Bernardo, DO's NPI number?
Mark Joshua Gatmaitan Bernardo, DO's National Provider Identifier (NPI) is 1245816602, issued on Mar 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mark Joshua Gatmaitan Bernardo, 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 Mark Joshua Gatmaitan Bernardo, DO's license?
NPPES lists Maine license number DO4070, 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 Mark Joshua Gatmaitan Bernardo, DO prescribe under Medicare Part D?
In 2024, Mark Joshua Gatmaitan Bernardo, DO had 510 Medicare Part D claims for 51 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
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.