Joanna Ellen Schwartz, M.D.
Internal Medicine Physician · Waltham, MA
Joanna Ellen Schwartz, M.D. is an internal medicine physician with a practice address in Waltham, Massachusetts, and NPI 1316112949, issued on Apr 24, 2008. Check the license (Massachusetts 250003, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joanna Ellen Schwartz
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 250003 MA
Self-reported in NPPES; status is on the state search - Practice location
- 52 Second Avenue Suite 2000, Waltham, MA 02451
- Phone
- (781) 487-4040
- Enumerated
- Apr 24, 2008
- Record last updated
- Jun 12, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (781) 487-2870
- Medicare enrollment
- Enrolled (PECOS I20120810000335); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Joanna Ellen Schwartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 250003Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,543 Medicare Part D claims for 212 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium188 claims
- Amlodipine Besylate91 claims
- Lisinopril75 claims
- Rosuvastatin Calcium63 claims
- Omeprazole62 claims
- Levothyroxine Sodium59 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
- Massachusetts General Physicians Organization IncBoston, MA
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joanna Ellen Schwartz among 6,825 internal medicine physician records in Massachusetts
Joanna Ellen Schwartz, 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 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2008 · median 2004 among the 4,103 with a school on file
- Record last updated2012 · 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).
32 internal medicine physician records list a practice address in Waltham
They are 32 of the 2,111 NPPES records with a practice address in Waltham, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Waltham → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Devasena Balasubramaniam, M.D.Waltham, MA 024511396936498
- Elenie Bartzokis, M.D.Waltham, MA 024511992827067
- Thomas Fry, MDWaltham, MA 024511588763908
- Bard Geesaman, M.D.Waltham, MA 024511790929123
- Christina Gelev, MDWaltham, MA 024511518958131
- Nathaniel Gunn, M.D.Waltham, MA 024511912041963
- Brittany Hansen, MDWaltham, MA 024511508515297
- Steven Kanner, MDWaltham, MA 024511740270289
Common questions
What is Joanna Ellen Schwartz, M.D.'s NPI number?
Joanna Ellen Schwartz, M.D.'s National Provider Identifier (NPI) is 1316112949, issued on Apr 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Ellen Schwartz, M.D. located?
The NPPES record lists a practice address at 52 Second Avenue Suite 2000, Waltham, MA, 02451. Phone: (781) 487-4040. Providers update this record themselves, so call before visiting.
How can I verify Joanna Ellen Schwartz, M.D.'s license?
NPPES lists Massachusetts license number 250003, 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 Joanna Ellen Schwartz, M.D. prescribe under Medicare Part D?
In 2024, Joanna Ellen Schwartz, M.D. had 1,543 Medicare Part D claims for 212 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.