John B. McCahan, M.D.
Pediatrics Physician · Westborough, MA
John B. McCahan, M.D. is a pediatrics physician with a practice address in Westborough, Massachusetts, and NPI 1225012354, issued on Dec 1, 2005. Check the license (Massachusetts 151640, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John B. McCahan
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 151640 MA
Self-reported in NPPES; status is on the state search - Practice location
- 33 E Main St, Westborough, MA 01581
- Phone
- (508) 836-4884
- Enumerated
- Dec 1, 2005
- Record last updated
- Mar 12, 2025
- Fax
- (508) 836-3351
- Medicare enrollment
- Enrolled (PECOS I20070508000601); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 33 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Fine, MDInternal Medicine Physician1639396955
- David Remis, M.D.Pediatrics Physician1851373278
- Suzanne Sprague, M.D.Internal Medicine Physician1679834980
- Bennett Vogt, MDStudent in an Organized Health Care Education/Training Program1225731581
Verify John B. McCahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 151640Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.6 times the Medicare Part D claims of the average pediatrics physician in 2024
2,096 Medicare Part D claims for 204 beneficiaries, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 69 claims were for opioids.
Most prescribed
- Atorvastatin Calcium332 claims
- Amlodipine Besylate131 claims
- Lisinopril109 claims
- Levothyroxine Sodium95 claims
- Rosuvastatin Calcium57 claims
- Hydrochlorothiazide52 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
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John B. McCahan among 2,628 pediatrics physician records in Massachusetts
John B. McCahan, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1993 · median 2010 among the 319 with a school on file
- Record last updated2025 · 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).
13 pediatrics physician records list a practice address in Westborough
They are 13 of the 565 NPPES records with a practice address in Westborough, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Westborough → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Michael Daley, MDWestborough, MA 015811861469751
- Ann Marie Deangelis, M.D.Westborough, MA 015811477500106
- Louann Maffei-Iwuc, M.D.Westborough, MA 015811952335416
- Joan McDonagh, MDWestborough, MA 015811609843598
- Ramesh Mundra, MDWestborough, MA 015811992771075
- Kimberly Parente, M.D.Westborough, MA 015811457385387
- David Remis, M.D.Westborough, MA 015811851373278
- Swati Sane, M.D.Westborough, MA 015811104850866
Common questions
What is John B. McCahan, M.D.'s NPI number?
John B. McCahan, M.D.'s National Provider Identifier (NPI) is 1225012354, issued on Dec 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John B. McCahan, M.D. located?
The NPPES record lists a practice address at 33 E Main St, Westborough, MA, 01581. Phone: (508) 836-4884. Providers update this record themselves, so call before visiting.
How can I verify John B. McCahan, M.D.'s license?
NPPES lists Massachusetts license number 151640, 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 John B. McCahan, M.D. prescribe under Medicare Part D?
In 2024, John B. McCahan, M.D. had 2,096 Medicare Part D claims for 204 beneficiaries; 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.