Brett C. Hynninen, M.D.
Physical Medicine & Rehabilitation Physician · Northampton, MA
Brett C. Hynninen, M.D. is a physical medicine & rehabilitation physician with a practice address in Northampton, Massachusetts, and NPI 1629010947, issued on Jun 12, 2006. Check the license (Massachusetts 161095, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Brett C. Hynninen
- Credential
- M.D.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- 161095 MA
Self-reported in NPPES; status is on the state search - Practice location
- 766 N King St Ste 2, Northampton, MA 01060
- Phone
- (413) 586-0230
- Enumerated
- Jun 12, 2006
- Record last updated
- Jun 25, 2025
- Fax
- (413) 586-1068
- Medicaid ID
- 3199975 MA
- Medicare enrollment
- Enrolled (PECOS I20040817001060); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 353 in Massachusetts → Look up another NPI →
Also registered at 766 N King St Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Derek Davidson, D.O., MSPTPhysical Medicine & Rehabilitation Physician1326238718
Verify Brett C. Hynninen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 161095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
414 Medicare Part D claims for 192 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. 58 claims were for opioids.
Most prescribed
- Alprazolam136 claims
- Cephalexin66 claims
- Gabapentin58 claims
- Prednisone25 claims
- Meloxicam20 claims
- Ciprofloxacin Hcl13 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: $555.55
16 payments; by number, the most common kind was food and beverage; the largest payer was Merz Pharmaceuticals, LLC. The 3,895 providers of this specialty with any payment received $1,237.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Pioneer Spine And Sports Physicians PCWest Springfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brett C. Hynninen among 353 physical medicine & rehabilitation physician records in Massachusetts
Brett C. Hynninen, M.D. is one of 353 physical medicine & rehabilitation physician records with a practice address in Massachusetts. 66% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 59% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1988 · median 2006 among the 209 with a school on file
- Record last updated2025 · 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 208100000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in Massachusetts
There are 353 physical medicine & rehabilitation physician records in Massachusetts.
All 353 in Massachusetts → Every provider in Northampton → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Raymond Auletta, M.D.Northampton, MA 010601073557302
- Derek Davidson, D.O., MSPTNorthampton, MA 010601326238718
- Richard Norris, MDNorthampton, MA 010601487617734
- Ann Maria Elder, MDLudlow, MA 010561720064983
- Ahmad Karagah, M.D.Leeds, MA 010531003849969
- Que Huong Nguyen, D.O.Leeds, MA 010531194975573
- Susan AsheHolyoke, MA 010401821960766
- Claude Borowsky, M.D.West Springfield, MA 010891972535409
Common questions
What is Brett C. Hynninen, M.D.'s NPI number?
Brett C. Hynninen, M.D.'s National Provider Identifier (NPI) is 1629010947, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brett C. Hynninen, M.D. located?
The NPPES record lists a practice address at 766 N King St Ste 2, Northampton, MA, 01060. Phone: (413) 586-0230. Providers update this record themselves, so call before visiting.
How can I verify Brett C. Hynninen, M.D.'s license?
NPPES lists Massachusetts license number 161095, 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 Brett C. Hynninen, M.D. prescribe under Medicare Part D?
In 2024, Brett C. Hynninen, M.D. had 414 Medicare Part D claims for 192 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. 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.