NPPES file of Aug 9, 2026

Christian Mewaldt

Internal Medicine Physician · Cambridge, MA

Christian Mewaldt is an internal medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1578952255, issued on Jan 17, 2015. Check the license (Massachusetts 2730404, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578952255
Name
Christian Mewaldt
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
2730404 MA
Self-reported in NPPES; status is on the state search
Practice location
90 Hancock St Apt 3, Cambridge, MA 02139
Phone
(304) 544-8747
Enumerated
Jan 17, 2015
Record last updated
Jul 12, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20180516001886); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2015
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Christian Mewaldt in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 2730404
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average internal medicine physician in 2024

92 Medicare Part D claims for 27 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Christian Mewaldt92
  2. Specialty average3,176

Most prescribed

  1. Repatha Sureclick31 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: $161.12

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. 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.

  1. Christian Mewaldt$161.12
  2. Specialty average$1,303.06

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

  1. Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Christian Mewaldt among 6,825 internal medicine physician records in Massachusetts

Christian Mewaldt 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 2015, is newer than 74% of them.

  • NPI issued2015 · 74% of these records are older, 23% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2015 · median 2004 among the 4,103 with a school on file
  • Record last updated2018 · 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).

300 internal medicine physician records list a practice address in Cambridge

They are 300 of the 5,145 NPPES records with a practice address in Cambridge, and 6,825 internal medicine physician records in Massachusetts.

The 8 internal medicine physician records with the nearest ZIP codes

  1. David Baron, MDCambridge, MA 021391376503318
  2. John Brusch, MDCambridge, MA 021391639138449
  3. David Diamond, MDCambridge, MA 021391265411664
  4. Leigh Firn, MDCambridge, MA 021391194706507
  5. Agnes Graves, M.D.Cambridge, MA 021391932160934
  6. Howard Heller, MDCambridge, MA 021391508856287
  7. Michael Kane, MDCambridge, MA 021391376524769
  8. William Kettyle, MDCambridge, MA 021391306823414

Common questions

What is Christian Mewaldt's NPI number?

Christian Mewaldt's National Provider Identifier (NPI) is 1578952255, issued on Jan 17, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Christian Mewaldt located?

The NPPES record lists a practice address at 90 Hancock St Apt 3, Cambridge, MA, 02139. Phone: (304) 544-8747. Providers update this record themselves, so call before visiting.

How can I verify Christian Mewaldt's license?

NPPES lists Massachusetts license number 2730404, 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 Christian Mewaldt prescribe under Medicare Part D?

In 2024, Christian Mewaldt had 92 Medicare Part D claims for 27 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.