Richard Thomas Mahon, M.D.
Pulmonary Disease Physician · Gaithersburg, MD
Richard Thomas Mahon, M.D. is a pulmonary disease physician with a practice address in Gaithersburg, Maryland, and NPI 1538237730, issued on Dec 4, 2006. Check the license (Maryland D0063136, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Richard Thomas Mahon
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- D0063136 MD
Self-reported in NPPES; status is on the state search - Practice location
- 16220 Frederick RD Ste 213, Gaithersburg, MD 20877
- Phone
- (301) 963-2709
- Enumerated
- Dec 4, 2006
- Record last updated
- Dec 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20140507000130); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 342 in Maryland → Look up another NPI →
Also registered at 16220 Frederick RD Ste 213
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chelsea Shakes, PA-CPhysician Assistant1104653450
Verify Richard Thomas Mahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0063136Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% more Medicare Part D claims than the average pulmonary disease physician in 2024
1,840 Medicare Part D claims for 311 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Trelegy Ellipta290 claims
- Albuterol Sulfate Hfa155 claims
- Prednisone125 claims
- Anoro Ellipta123 claims
- Montelukast Sodium119 claims
- Breztri Aerosphere84 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.
Industry payments in 2024: $2,487.92
103 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Privia Medical Group, LLCKensington, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Richard Thomas Mahon among 342 pulmonary disease physician records in Maryland
Richard Thomas Mahon, M.D. is one of 342 pulmonary disease physician records with a practice address in Maryland. 78% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 42% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1992 · median 2000 among the 225 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Maryland
There are 342 pulmonary disease physician records in Maryland.
All 342 in Maryland → Every provider in Gaithersburg → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Joseph Ball, MDGaithersburg, MD 208771447254230
- Libuse Heinz-Momcilovic, MDGaithersburg, MD 208771952305740
- Frank Mayo, MDGaithersburg, MD 208771811991144
- Jay Weiner, MDGaithersburg, MD 208771346243920
- George Samuel, MDGaithersburg, MD 208781417026592
- Aaron Holley, M.D.Bethesda, MD 208891750485439
- William Kelly, M.D.Bethesda, MD 208891316915390
- Angeline Lazarus, MDBethesda, MD 208891871552158
Common questions
What is Richard Thomas Mahon, M.D.'s NPI number?
Richard Thomas Mahon, M.D.'s National Provider Identifier (NPI) is 1538237730, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard Thomas Mahon, M.D. located?
The NPPES record lists a practice address at 16220 Frederick RD Ste 213, Gaithersburg, MD, 20877. Phone: (301) 963-2709. Providers update this record themselves, so call before visiting.
How can I verify Richard Thomas Mahon, M.D.'s license?
NPPES lists Maryland license number D0063136, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard Thomas Mahon, M.D. prescribe under Medicare Part D?
In 2024, Richard Thomas Mahon, M.D. had 1,840 Medicare Part D claims for 311 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.