John Weber Denninger, MD, PHD
Psychiatry Physician · Boston, MA
John Weber Denninger, MD, PHD is a psychiatry physician with a practice address in Boston, Massachusetts, and NPI 1871555888, issued on Apr 5, 2006. Check the license (Massachusetts 221542, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Weber Denninger
- Credential
- MD, PHD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 221542 MA
Self-reported in NPPES; status is on the state search - Practice location
- 50 Staniford St Ste 401, Boston, MA 02114
- Phone
- (617) 726-2985
- Enumerated
- Apr 5, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (617) 724-3028
- Medicare enrollment
- Enrolled (PECOS I20050330001028); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2000
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Verify John Weber Denninger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 221542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average psychiatry physician in 2024
181 Medicare Part D claims for 14 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Methylphenidate Er22 claims
- Duloxetine Hcl18 claims
- Lorazepam16 claims
- Buspirone Hcl15 claims
- Venlafaxine Hcl Er14 claims
- Aripiprazole13 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 one group practice
- Massachusetts General Physicians Organization IncCharlestown, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Weber Denninger among 2,736 psychiatry physician records in Massachusetts
John Weber Denninger, MD, PHD is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 51% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2000 · median 2005 among the 1,219 with a school on file
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
845 psychiatry physician records list a practice address in Boston
They are 845 of the 41,865 NPPES records with a practice address in Boston, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Boston → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Steven Ablon, MDBoston, MA 021141083604839
- Barbara Beck, MDBoston, MA 021141720078272
- Judith Edersheim, MDBoston, MA 021141154311835
- Karleyton Evans, MDBoston, MA 021141407846058
- James Groves, MDBoston, MA 021141013906015
- John Herman, MDBoston, MA 021141275523961
- Rakesh Karmacharya, MD PHDBoston, MA 021141720078389
- Vaughn Mankey, MDBoston, MA 021141225028954
Common questions
What is John Weber Denninger, MD, PHD's NPI number?
John Weber Denninger, MD, PHD's National Provider Identifier (NPI) is 1871555888, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Weber Denninger, MD, PHD located?
The NPPES record lists a practice address at 50 Staniford St Ste 401, Boston, MA, 02114. Phone: (617) 726-2985. Providers update this record themselves, so call before visiting.
How can I verify John Weber Denninger, MD, PHD's license?
NPPES lists Massachusetts license number 221542, 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 John Weber Denninger, MD, PHD prescribe under Medicare Part D?
In 2024, John Weber Denninger, MD, PHD had 181 Medicare Part D claims for 14 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.