Subbuluxmi Natarajan, MD
Internal Medicine Physician · Watertown, MA
Subbuluxmi Natarajan, MD is an internal medicine physician with a practice address in Watertown, Massachusetts, and NPI 1063599686, issued on Nov 1, 2006. Check the license (Massachusetts 241782, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Subbuluxmi Natarajan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 241782 MA
2000148431 MO
Self-reported in NPPES; status is on the state search - Practice location
- 485 Arsenal St, Watertown, MA 02472
- Phone
- (617) 972-5100
- Enumerated
- Nov 1, 2006
- Record last updated
- Feb 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100315000357); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 485 Arsenal St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Allen, PHARMD, CDCES, BCACPAmbulatory Care Pharmacist1285890566
- Nicole Allie, PHARMD, CGPGeriatric Pharmacist1104933936
- Ehsan Azimi, M.D.Internal Medicine Physician1437475829
- Olivia Bass, NPFamily Nurse Practitioner1669209664
- Mark Bauer, M.D.Internal Medicine Physician1487625307
- Edward Bauman, PSYDPsychologist1174575674
Verify Subbuluxmi Natarajan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 241782Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average internal medicine physician in 2024
4,331 Medicare Part D claims for 471 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 68 claims were for opioids.
Most prescribed
- Atorvastatin Calcium332 claims
- Levothyroxine Sodium247 claims
- Lisinopril246 claims
- Simvastatin150 claims
- Omeprazole137 claims
- Lorazepam132 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 2 group practices
- Atrius Health IncDedham, MA
- Rehabilitation Medical Associates PCBraintree, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Subbuluxmi Natarajan among 6,825 internal medicine physician records in Massachusetts
Subbuluxmi Natarajan, MD 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1998 · median 2004 among the 4,103 with a school on file
- Record last updated2021 · 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).
28 internal medicine physician records list a practice address in Watertown
They are 28 of the 873 NPPES records with a practice address in Watertown, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Watertown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Bauer, M.D.Watertown, MA 024721487625307
- David Cancian, MDWatertown, MA 024721962496539
- Andrew Cutler, MDWatertown, MA 024721437159720
- Paul Fergus, MDWatertown, MA 024721356336200
- Richard Galgano, D.O.Watertown, MA 024721225003569
- Paul Kasuba, MDWatertown, MA 024721851389969
- Robert Kelleher, MDWatertown, MA 024721891761714
- Joo Kim, M.D.Watertown, MA 024721497724173
Common questions
What is Subbuluxmi Natarajan, MD's NPI number?
Subbuluxmi Natarajan, MD's National Provider Identifier (NPI) is 1063599686, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Subbuluxmi Natarajan, MD located?
The NPPES record lists a practice address at 485 Arsenal St, Watertown, MA, 02472. Phone: (617) 972-5100. Providers update this record themselves, so call before visiting.
How can I verify Subbuluxmi Natarajan, MD's license?
NPPES lists Massachusetts license number 241782, 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 Subbuluxmi Natarajan, MD prescribe under Medicare Part D?
In 2024, Subbuluxmi Natarajan, MD had 4,331 Medicare Part D claims for 471 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.