Brett Hynninen, M.D.
NPI 1629010947 · Physical Medicine & Rehabilitation Physician · Northampton, MA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brett Hynninen, M.D. is a Physical Medicine & Rehabilitation Physician provider in Northampton, MA (NPI 1629010947).
Provider details
- NPI number
- 1629010947
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 161095 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,918 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 725 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 333 | $92 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 229 | $168 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 112 | $280 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 100 | $66 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 136 | 91 |
| Cephalexin | 66 | 40 |
| Gabapentin | 58 | 26 |
| Prednisone | 25 | 24 |
| Meloxicam | 20 | — |
| Ciprofloxacin Hcl | 13 | — |
| Tramadol Hcl | 13 | — |
| Hydrocodone/Acetaminophen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$556 across 16 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-12
- Last updated
- 2025-06-25
- Certified
- 2025-06-25
Frequently asked questions
- What is Brett Hynninen's NPI number?
- Brett Hynninen's National Provider Identifier (NPI) is 1629010947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brett Hynninen's specialty?
- Brett Hynninen is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Brett Hynninen located?
- Brett Hynninen's practice location on file with NPPES is 766 N King St Ste 2, Northampton, MA 01060-1143.
- What is Brett Hynninen's phone number?
- The practice phone number listed in the NPPES registry for Brett Hynninen is (413) 586-0230.
- Does Brett Hynninen accept Medicare?
- Brett Hynninen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brett Hynninen's NPI active?
- Yes — Brett Hynninen's NPI (1629010947) is active in the NPPES registry as of the last update on 2025-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.