David R. Ziehr, MD
Critical Care Medicine (Internal Medicine) Physician · Boston, MA
David R. Ziehr, MD is a critical care medicine (internal medicine) physician with a practice address in Boston, Massachusetts, and NPI 1447631874, issued on Jun 11, 2015. Check the license (Massachusetts 273801, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- David R. Ziehr
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 273801 MA
L-263982 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-2674
- Enumerated
- Jun 11, 2015
- Record last updated
- Oct 31, 2025
- Medicare enrollment
- Enrolled (PECOS I20190815000965); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2015
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 157 in Massachusetts → Look up another NPI →
Also registered at Massachusetts General Hospital
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Verify David R. Ziehr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 273801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David R. Ziehr among 157 critical care medicine (internal medicine) physician records in Massachusetts
David R. Ziehr, MD 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 2015, is newer than 77% of them.
- NPI issued2015 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2015 · median 2005 among the 116 with a school on file
- Record last updated2025 · 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 Boston → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Edward Bittner, MD PHDBoston, MA 021141215912456
- Richard Channick, M.D.Boston, MA 021141144255886
- Alexandra Cist, MDBoston, MA 021141659344091
- Ashwin Dharmadhikari, MDBoston, MA 021141710968664
- Katherine Dudley, M.D.Boston, MA 021141245497619
- Jean Elrick, MDBoston, MA 021141275524993
- Ming-Hui Fan, MDBoston, MA 021141063561694
- Fiona Gibbons, MDBoston, MA 021141720079288
Common questions
What is David R. Ziehr, MD's NPI number?
David R. Ziehr, MD's National Provider Identifier (NPI) is 1447631874, issued on Jun 11, 2015. An NPI identifies a provider in billing; it is not a license.
Where is David R. Ziehr, MD located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-2674. Providers update this record themselves, so call before visiting.
How can I verify David R. Ziehr, MD's license?
NPPES lists Massachusetts license number 273801, 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.
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.