Guy Philip Guenthner, MD
Orthopaedic Surgery Physician · Boston, MA
Guy Philip Guenthner, MD is an orthopaedic surgery physician with a practice address in Boston, Massachusetts, and NPI 1699418855, issued on Apr 15, 2022. Check the license (Massachusetts 293179, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Guy Philip Guenthner
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 293179 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington Street, Boston, MA 02111
- Phone
- (617) 636-5172
- Enumerated
- Apr 15, 2022
- Record last updated
- Jun 21, 2022
- Fax
- (617) 636-5178
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 692 in Massachusetts → Look up another NPI →
Also registered at 800 Washington Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Guy Philip Guenthner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 293179Check 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 orthopaedic surgery physician in 2024
61 Medicare Part D claims for 45 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 41 claims were for opioids.
Most prescribed
- Oxycodone Hcl30 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: $98.14
2 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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.
Guy Philip Guenthner among 692 orthopaedic surgery physician records in Massachusetts
Guy Philip Guenthner, MD is one of 692 orthopaedic surgery physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 96% of them.
- NPI issued2022 · 96% of these records are older, 3% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2022 · 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 207X00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Massachusetts
There are 692 orthopaedic surgery physician records in Massachusetts.
All 692 in Massachusetts → Every provider in Boston → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Asad AshrafBoston, MA 021111720549397
- Michael Baratz, MDBoston, MA 021111013177534
- William Donaldson, M.D.Boston, MA 021111043235187
- Matthew Gordon, M.D.Boston, MA 021111417215401
- John Mazzocco, MDBoston, MA 021111386266831
- Suzanne Naughton, MDBoston, MA 021111770110819
- Nicholas Pagani, MDBoston, MA 021111104318872
- Vito Pugliano, M.D.Boston, MA 021111245524974
Common questions
What is Guy Philip Guenthner, MD's NPI number?
Guy Philip Guenthner, MD's National Provider Identifier (NPI) is 1699418855, issued on Apr 15, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Guy Philip Guenthner, MD located?
The NPPES record lists a practice address at 800 Washington Street, Boston, MA, 02111. Phone: (617) 636-5172. Providers update this record themselves, so call before visiting.
How can I verify Guy Philip Guenthner, MD's license?
NPPES lists Massachusetts license number 293179, 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 Guy Philip Guenthner, MD prescribe under Medicare Part D?
In 2024, Guy Philip Guenthner, MD had 61 Medicare Part D claims for 45 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.