Richard Gregory Lyons, M.D.
Emergency Medicine Physician · Ayer, MA
Richard Gregory Lyons, M.D. is an emergency medicine physician with a practice address in Ayer, Massachusetts, and NPI 1154463867, issued on Feb 12, 2007. Check the license (Massachusetts 49327, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Richard Gregory Lyons
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 49327 MA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Groton RD, Ayer, MA 01432
- Phone
- (978) 784-9250
- Enumerated
- Feb 12, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 6194575 MA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 200 Groton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Richard Gregory Lyons in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 49327Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average emergency medicine physician in 2024
89 Medicare Part D claims for 70 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Prednisone15 claims
- Naproxen11 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.
Richard Gregory Lyons among 1,829 emergency medicine physician records in Massachusetts
Richard Gregory Lyons, M.D. is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 51% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2007 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 emergency medicine physician records list a practice address in Ayer
They are 2 of the 118 NPPES records with a practice address in Ayer, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Ayer → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jonathan Vacik, MDAyer, MA 014321528129640
- Sarah Gilbert, MDGardner, MA 014401205915212
- Allison Goulet-ScottGardner, MA 014401750917621
- Vernon Kellog, MDGardner, MA 014401144341470
- Ellen Ray, M.D.Gardner, MA 014401285624353
- Michael Shear, MDGardner, MA 014401407016520
- John Skrzypczak, M.D.Gardner, MA 014401194715268
- Kirana Weeratne, M.D.Gardner, MA 014401801069208
Common questions
What is Richard Gregory Lyons, M.D.'s NPI number?
Richard Gregory Lyons, M.D.'s National Provider Identifier (NPI) is 1154463867, issued on Feb 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Richard Gregory Lyons, M.D. located?
The NPPES record lists a practice address at 200 Groton RD, Ayer, MA, 01432. Phone: (978) 784-9250. Providers update this record themselves, so call before visiting.
How can I verify Richard Gregory Lyons, M.D.'s license?
NPPES lists Massachusetts license number 49327, 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 Richard Gregory Lyons, M.D. prescribe under Medicare Part D?
In 2024, Richard Gregory Lyons, M.D. had 89 Medicare Part D claims for 70 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.