John Spencer Herendeen, MD
Neurological Surgery Physician · Boston, MA
John Spencer Herendeen, MD is a neurological surgery physician with a practice address in Boston, Massachusetts, and NPI 1104406834, issued on Apr 8, 2021. Check the license (Massachusetts 289703, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Spencer Herendeen
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- 289703 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-5000
- Enumerated
- Apr 8, 2021
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 236 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify John Spencer Herendeen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 289703Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average neurological surgery physician in 2024
37 Medicare Part D claims for 19 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
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.
John Spencer Herendeen among 236 neurological surgery physician records in Massachusetts
John Spencer Herendeen, MD is one of 236 neurological surgery physician records with a practice address in Massachusetts. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 90% of them.
- NPI issued2021 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2021 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Massachusetts
There are 236 neurological surgery physician records in Massachusetts.
All 236 in Massachusetts → Every provider in Boston → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Abraham Boskovitz, MDBoston, MA 021111033301726
- Alper DincerBoston, MA 021111184243537
- Carl Heilman, M.D.Boston, MA 021111649229907
- Robert Heller, M.D.Boston, MA 021111932547395
- Jacob Kosarchuk, MDBoston, MA 021111932729597
- James Kryzanski, MDBoston, MA 021111730107467
- Adel Malek, MDBoston, MA 021111598872962
- Tara Nail, M.D.Boston, MA 021111386093763
Common questions
What is John Spencer Herendeen, MD's NPI number?
John Spencer Herendeen, MD's National Provider Identifier (NPI) is 1104406834, issued on Apr 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is John Spencer Herendeen, MD located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-5000. Providers update this record themselves, so call before visiting.
How can I verify John Spencer Herendeen, MD's license?
NPPES lists Massachusetts license number 289703, 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 Spencer Herendeen, MD prescribe under Medicare Part D?
In 2024, John Spencer Herendeen, MD had 37 Medicare Part D claims for 19 beneficiaries; the average among neurological surgery physician prescribers was 172. 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.