Karen M. Hoyt, MD
Family Medicine Physician · Springfield, MA
Karen M. Hoyt, MD is a family medicine physician with a practice address in Springfield, Massachusetts, and NPI 1013978097, issued on Mar 30, 2006. Check the license (Massachusetts 78660, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Karen M. Hoyt
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 78660 MA
Self-reported in NPPES; status is on the state search - Practice location
- 354 Birnie Ave Ste 202, Springfield, MA 01107
- Phone
- (413) 733-3470
- Enumerated
- Mar 30, 2006
- Record last updated
- Jun 3, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (413) 732-4216
- Medicaid IDs
- 93096913 MA
003117513 CT - Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 354 Birnie Ave Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zulfiqar Chaudhry, M.D.Hospitalist Physician1548468705
- Helen Clark, NPFamily Nurse Practitioner1124098876
- Rebecca Delisa, NPFamily Nurse Practitioner1033196530
- Philip Gaziano, MDInternal Medicine Physician1043275001
Verify Karen M. Hoyt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 78660Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
103 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amlodipine Besylate52 claims
- Levothyroxine Sodium51 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.
Karen M. Hoyt among 2,265 family medicine physician records in Massachusetts
Karen M. Hoyt, MD is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 55% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2009 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Massachusetts
There are 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Springfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Omar Abduljabar, M.D.Springfield, MA 011071770978843
- Trevor Bell, M.D.Springfield, MA 011071598084741
- Elka Cloke, M.D.Springfield, MA 011071598959249
- Jaai Deshpande, MDSpringfield, MA 011071679095947
- Leila Elysee-MittonSpringfield, MA 011071508599044
- Katherine Gerstle, MDSpringfield, MA 011071700808839
- David Katz, MDSpringfield, MA 011071427069061
- Justin Quinlan, DOSpringfield, MA 011071124558481
Common questions
What is Karen M. Hoyt, MD's NPI number?
Karen M. Hoyt, MD's National Provider Identifier (NPI) is 1013978097, issued on Mar 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen M. Hoyt, MD located?
The NPPES record lists a practice address at 354 Birnie Ave Ste 202, Springfield, MA, 01107. Phone: (413) 733-3470. Providers update this record themselves, so call before visiting.
How can I verify Karen M. Hoyt, MD's license?
NPPES lists Massachusetts license number 78660, 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 Karen M. Hoyt, MD prescribe under Medicare Part D?
In 2024, Karen M. Hoyt, MD had 103 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.