Ainsley McCowan, M.D.
Internal Medicine Physician · Newton, MA
Ainsley McCowan, M.D. is an internal medicine physician with a practice address in Newton, Massachusetts, and NPI 1730591504, issued on May 28, 2014. Check the license (Massachusetts 269823, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ainsley McCowan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 269823 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2000 Washington St Ste 546, Newton, MA 02462
- Phone
- (617) 964-5020
- Enumerated
- May 28, 2014
- Record last updated
- Jul 21, 2022
- Fax
- (617) 964-3033
- Medicare enrollment
- Enrolled (PECOS I20170915002683); may accept Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Ainsley McCowan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 269823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,020 Medicare Part D claims for 231 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 35 claims were for opioids.
Most prescribed
- Atorvastatin Calcium106 claims
- Amlodipine Besylate58 claims
- Levothyroxine Sodium45 claims
- Lisinopril45 claims
- Losartan Potassium43 claims
- Rosuvastatin Calcium35 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: $305.55
12 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Pjf Personalized Medical Care LLCChestnut Hill, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ainsley McCowan among 6,825 internal medicine physician records in Massachusetts
Ainsley McCowan, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 72% of them.
- NPI issued2014 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2014 · median 2004 among the 4,103 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 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
80 internal medicine physician records list a practice address in Newton
They are 80 of the 2,975 NPPES records with a practice address in Newton, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Newton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Cunningham, M.D.Newton Lower Falls, MA 024621326153503
- Allan Engel, M.D.Newton Lower Falls, MA 024621104813443
- Arthur Kennedy, M.D.Newton, MA 024621043223266
- Nicholas Michael Mascoli, M.D.Newton Lower Falls, MA 024621013964717
- John O Brien, MDNewton Lower Falls, MA 024621588678965
- Steven Pestka, M.D.Newton, MA 024621407807498
- Harry Schrager, M.D.Newton, MA 024621871540666
- David Wachs, M.D.Newton, MA 024621073571436
Common questions
What is Ainsley McCowan, M.D.'s NPI number?
Ainsley McCowan, M.D.'s National Provider Identifier (NPI) is 1730591504, issued on May 28, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ainsley McCowan, M.D. located?
The NPPES record lists a practice address at 2000 Washington St Ste 546, Newton, MA, 02462. Phone: (617) 964-5020. Providers update this record themselves, so call before visiting.
How can I verify Ainsley McCowan, M.D.'s license?
NPPES lists Massachusetts license number 269823, 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 Ainsley McCowan, M.D. prescribe under Medicare Part D?
In 2024, Ainsley McCowan, M.D. had 1,020 Medicare Part D claims for 231 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.