Keshav Parthasarathy, M.D.
Critical Care Medicine (Internal Medicine) Physician · Concord, MA
Keshav Parthasarathy, M.D. is a critical care medicine (internal medicine) physician with a practice address in Concord, Massachusetts, and NPI 1447401419, issued on Oct 8, 2008. Check the license (Massachusetts 254154, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Keshav Parthasarathy
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 254154 MA
25154 MA
Self-reported in NPPES; status is on the state search - Practice location
- 133 Old Road TO 9 Acre Cor, Concord, MA 01742
- Phone
- (978) 466-4396
- Enumerated
- Oct 8, 2008
- Record last updated
- Aug 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (978) 466-4029
- Medicare enrollment
- Enrolled (PECOS I20131008001413); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 157 in Massachusetts → Look up another NPI →
Also registered at 133 Old Road TO 9 Acre Cor
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marie Aguirre, PA-CPhysician Assistant1467281691
- Michelle Allanbrook, RNRegistered Nurse1053833905
- David Barash, M.D.Emergency Medicine Physician1699756296
- Joseph Bergen, D.O.Emergency Medicine Physician1518921972
- Seamus Bergen, RNPsychiatric/Mental Health Registered Nurse1528638467
- Tanya Bergen, LICSWMental Health Counselor1861742140
Verify Keshav Parthasarathy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 254154Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
42 Medicare Part D claims for 14 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D.
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: $13.17
1 payment: food and beverage; the largest payer was Pfizer Inc. The 2,708 providers of this specialty with any payment received $2,958.68 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 2 group practices
- Athol Memorial Hospital IncorporatedAthol, MA
- Henry Heywood Memorial HospitalGardner, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Keshav Parthasarathy among 157 critical care medicine (internal medicine) physician records in Massachusetts
Keshav Parthasarathy, M.D. is one of 157 critical care medicine (internal medicine) physician records with a practice address in Massachusetts. 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 2008, is newer than 52% of them.
- NPI issued2008 · 52% of these records are older, 40% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2005 · median 2005 among the 116 with a school on file
- Record last updated2014 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Massachusetts
There are 157 critical care medicine (internal medicine) physician records in Massachusetts.
All 157 in Massachusetts → Every provider in Concord → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Rupenkumar Amin, M.D.Concord, MA 017421568625820
- Neha Mehta, DOConcord, MA 017421134513179
- Salvador Albanese, M.D.Woburn, MA 018011437130630
- Sarah Petteys, M.D.Woburn, MA 018011003046194
- William Bohnert, MDBurlington, MA 018051942264809
- Michael Colancecco, DOBurlington, MA 018051841481330
- Khaled Eissa, MDBurlington, MA 018051124257928
- Daniel Fitelson, MDBurlington, MA 018051053545459
Common questions
What is Keshav Parthasarathy, M.D.'s NPI number?
Keshav Parthasarathy, M.D.'s National Provider Identifier (NPI) is 1447401419, issued on Oct 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Keshav Parthasarathy, M.D. located?
The NPPES record lists a practice address at 133 Old Road TO 9 Acre Cor, Concord, MA, 01742. Phone: (978) 466-4396. Providers update this record themselves, so call before visiting.
How can I verify Keshav Parthasarathy, M.D.'s license?
NPPES lists Massachusetts license number 254154, 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 Keshav Parthasarathy, M.D. prescribe under Medicare Part D?
In 2024, Keshav Parthasarathy, M.D. had 42 Medicare Part D claims for 14 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.