NPPES file of Aug 9, 2026

Sebastian Flacke, M.D.

Diagnostic Radiology Physician · Burlington, MA

Sebastian Flacke, M.D. is a diagnostic radiology physician with a practice address in Burlington, Massachusetts, and NPI 1235326018, issued on Sep 26, 2007. Check the license (Massachusetts 230805, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1235326018
Name
Sebastian Flacke
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
230805 MA
Self-reported in NPPES; status is on the state search
Practice location
Lahey Clinic, Burlington, MA 01805
Phone
(781) 744-8170
Enumerated
Sep 26, 2007
Record last updated
Dec 7, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(781) 744-5215
Medicaid ID
110084778A MA
Medicare enrollment
Enrolled (PECOS I20100112000341); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at Lahey Clinic

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gyorgy Abel, M.D.Clinical Pathology/Laboratory Medicine Physician1831282383
  2. Ghazwan Acash, M.D.Pulmonary Disease Physician1710187331
  3. Christine Ackroyd, N.P.Family Nurse Practitioner1053693549
  4. Vincent Agnello, M.D.Specialist1053362129
  5. Eileen Allosso, MS APRN BCNurse Practitioner1437240926
  6. Carolyn Anderson, M.D.Ophthalmology Physician1376644773

Verify Sebastian Flacke in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 230805
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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59% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024

21 Medicare Part D claims for 13 beneficiaries, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Sebastian Flacke21
  2. Specialty average51

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 MIPS final score for 2023 (Medicare payment program): 91.4 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score76.9
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $133.09

1 payment: food and beverage; the largest payer was Philips North America LLC. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sebastian Flacke$133.09
  2. Specialty average$2,488.38

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

  1. Lahey Clinic IncBurlington, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sebastian Flacke among 1,658 diagnostic radiology physician records in Massachusetts

Sebastian Flacke, M.D. is one of 1,658 diagnostic radiology physician records with a practice address in Massachusetts. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.

  • NPI issued2007 · 43% of these records are older, 49% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1995 · median 2006 among the 1,125 with a school on file
  • Record last updated2010 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

63 diagnostic radiology physician records list a practice address in Burlington

They are 63 of the 2,620 NPPES records with a practice address in Burlington, and 1,658 diagnostic radiology physician records in Massachusetts.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Heideh Ahari, M.D.Burlington, MA 018051972600419
  2. Esfandiar Ansari, M.D.Burlington, MA 018051437256161
  3. Yevgeniy Arshanskiy, M.D.Burlington, MA 018051649225046
  4. Curtis Bakal, M.D.Burlington, MA 018051073621702
  5. Carl Beckmann, MDBurlington, MA 018051962505503
  6. Joe Hsu, M.D.Burlington, MA 018051780616508
  7. Cathleen Kim, M.D.Burlington, MA 018051699731059
  8. Peter Lee, M.D.Burlington, MA 018051205846151

Common questions

What is Sebastian Flacke, M.D.'s NPI number?

Sebastian Flacke, M.D.'s National Provider Identifier (NPI) is 1235326018, issued on Sep 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Sebastian Flacke, M.D. located?

The NPPES record lists a practice address at Lahey Clinic, Burlington, MA, 01805. Phone: (781) 744-8170. Providers update this record themselves, so call before visiting.

How can I verify Sebastian Flacke, M.D.'s license?

NPPES lists Massachusetts license number 230805, 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 Sebastian Flacke, M.D. prescribe under Medicare Part D?

In 2024, Sebastian Flacke, M.D. had 21 Medicare Part D claims for 13 beneficiaries; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.

What is Sebastian Flacke, M.D.'s MIPS final score?

The 2023 MIPS final score is 91.4 of 100. 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.