Mark Thomas Brown, M.D.
Otolaryngology Physician · Concord, MA
Mark Thomas Brown, M.D. is an otolaryngology physician with a practice address in Concord, Massachusetts, and NPI 1023024395, issued on Jul 31, 2006. Check the license (Massachusetts 79299, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Thomas Brown
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 79299 MA
Self-reported in NPPES; status is on the state search - Practice location
- 54 Baker Avenue Ext Ste 303, Concord, MA 01742
- Phone
- (978) 369-8780
- Enumerated
- Jul 31, 2006
- Record last updated
- Nov 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20221215000068); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 364 in Massachusetts → Look up another NPI →
Also registered at 54 Baker Avenue Ext Ste 303
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Monica Lee, M.D.Otolaryngology Physician1356516819
- Jamie Wilkins, M.ED., CCC-AAudiologist1447317284
Verify Mark Thomas Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average otolaryngology physician in 2024
471 Medicare Part D claims for 236 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Fluticasone Propionate143 claims
- Azelastine Hcl48 claims
- Ipratropium Bromide40 claims
- Methylprednisolone34 claims
- Neomycin-Polymyxin-Hydrocort33 claims
- Omeprazole22 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
- Massachusetts Eye And Ear Associates, IncConcord, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Thomas Brown among 364 otolaryngology physician records in Massachusetts
Mark Thomas Brown, M.D. is one of 364 otolaryngology physician records with a practice address in Massachusetts. 77% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 54% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1989 · median 2004 among the 239 with a school on file
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Massachusetts
There are 364 otolaryngology physician records in Massachusetts.
All 364 in Massachusetts → Every provider in Concord → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- George Kazda, M.D.Concord, MA 017421659362754
- Ayesha Khalid, M.D.Concord, MA 017421528285921
- Monica Lee, M.D.Concord, MA 017421356516819
- Daniel Vogel, M.D.Concord, MA 017421023004330
- Michael Schlewet, M.DBolton, MA 017401164803847
- Aragam Subramanya, M.D.Marlborough, MA 017521205984614
- David Wexler, MDMarlborough, MA 017521386628022
- Aditi Mohankumar, M.D.Milford, MA 017571629365440
Common questions
What is Mark Thomas Brown, M.D.'s NPI number?
Mark Thomas Brown, M.D.'s National Provider Identifier (NPI) is 1023024395, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Thomas Brown, M.D. located?
The NPPES record lists a practice address at 54 Baker Avenue Ext Ste 303, Concord, MA, 01742. Phone: (978) 369-8780. Providers update this record themselves, so call before visiting.
How can I verify Mark Thomas Brown, M.D.'s license?
NPPES lists Massachusetts license number 79299, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Thomas Brown, M.D. prescribe under Medicare Part D?
In 2024, Mark Thomas Brown, M.D. had 471 Medicare Part D claims for 236 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.