Katelyn Sullivan, D.O.
Emergency Medicine Physician · Springfield, MA
Katelyn Sullivan, D.O. is an emergency medicine physician with a practice address in Springfield, Massachusetts, and NPI 1205220720, issued on Mar 23, 2015. Check the license (Massachusetts 274956, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Katelyn Sullivan
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 274956 MA
Self-reported in NPPES; status is on the state search - Practice location
- Baystate Medical Ctr, Springfield, MA 01199
- Phone
- (413) 794-0000
- Enumerated
- Mar 23, 2015
- Record last updated
- Sep 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20180913001863); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at Baystate Medical Ctr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jonathan Cogley, MDDiagnostic Radiology Physician1366619637
- Gwendolyn DownsStudent in an Organized Health Care Education/Training Program1285051623
Verify Katelyn Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 274956Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average emergency medicine physician in 2024
104 Medicare Part D claims for 74 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 98 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- South Shore Health Express IncPembroke, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katelyn Sullivan among 1,829 emergency medicine physician records in Massachusetts
Katelyn Sullivan, D.O. is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 70% of them.
- NPI issued2015 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2011 among the 1,200 with a school on file
- Record last updated2025 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
123 emergency medicine physician records list a practice address in Springfield
They are 123 of the 8,553 NPPES records with a practice address in Springfield, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Springfield → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- John George, MDSpringfield, MA 011991467559468
- Aaron Hexdall, MDSpringfield, MA 011991407843378
- Kathleen Kerrigan, M.D.Springfield, MA 011991972570877
- Michael Lemanski, MDSpringfield, MA 011991902815012
- Lucienne Lutfy-Clayton, M.D.Springfield, MA 011991033157920
- Benjamin Osborne, MDSpringfield, MA 011991073594370
- James Pope, MDSpringfield, MA 011991164527198
- Niels Rathlev, MDSpringfield, MA 011991164494365
Common questions
What is Katelyn Sullivan, D.O.'s NPI number?
Katelyn Sullivan, D.O.'s National Provider Identifier (NPI) is 1205220720, issued on Mar 23, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Katelyn Sullivan, D.O. located?
The NPPES record lists a practice address at Baystate Medical Ctr, Springfield, MA, 01199. Phone: (413) 794-0000. Providers update this record themselves, so call before visiting.
How can I verify Katelyn Sullivan, D.O.'s license?
NPPES lists Massachusetts license number 274956, 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 Katelyn Sullivan, D.O. prescribe under Medicare Part D?
In 2024, Katelyn Sullivan, D.O. had 104 Medicare Part D claims for 74 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Katelyn Sullivan, D.O.'s MIPS final score?
The 2023 MIPS final score is 98 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.