Michael Ryan Flaherty, D.O.
Pediatrics Physician · Boston, MA
Michael Ryan Flaherty, D.O. is a pediatrics physician with a practice address in Boston, Massachusetts, and NPI 1679862338, issued on Apr 4, 2011. Check the license (Massachusetts 258846, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Ryan Flaherty
- Credential
- D.O.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 258846 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-2000
- Enumerated
- Apr 4, 2011
- Record last updated
- May 1, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Ryan Flaherty in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 258846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average pediatrics physician in 2024
13 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 85% of claims.
Most prescribed
- Albuterol Sulfate Hfa11 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.
Michael Ryan Flaherty among 2,628 pediatrics physician records in Massachusetts
Michael Ryan Flaherty, D.O. is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 70% of them.
- NPI issued2011 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2014 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
822 pediatrics physician records list a practice address in Boston
They are 822 of the 41,865 NPPES records with a practice address in Boston, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Boston → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Ronald Benz, MDBoston, MA 021141851381107
- Lawrence Cohan, MDBoston, MA 021141083604508
- Charles Cote, MDBoston, MA 021141134110265
- Mitchell Feldman, MDBoston, MA 021141598755688
- Alison Friedmann, MDBoston, MA 021141619967346
- Mark Goldstein, MDBoston, MA 021141588654602
- Marc Grella, MDBoston, MA 021141699765750
- Maryetta King, M.D.Boston, MA 021141962492603
Common questions
What is Michael Ryan Flaherty, D.O.'s NPI number?
Michael Ryan Flaherty, D.O.'s National Provider Identifier (NPI) is 1679862338, issued on Apr 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Michael Ryan Flaherty, D.O. located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-2000. Providers update this record themselves, so call before visiting.
How can I verify Michael Ryan Flaherty, D.O.'s license?
NPPES lists Massachusetts license number 258846, 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 Michael Ryan Flaherty, D.O. prescribe under Medicare Part D?
In 2024, Michael Ryan Flaherty, D.O. had 13 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.