NPPES file of Aug 9, 2026

Laurence A. Sibrack, M.D.

Dermatology Physician · Newtown, CT

Laurence A. Sibrack, M.D. is a dermatology physician with a practice address in Newtown, Connecticut, and NPI 1396740643, issued on Jun 14, 2005. Check the license (Connecticut 017539, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1396740643
Name
Laurence A. Sibrack
Credential
M.D.
Primary taxonomy
Dermatology Physician 207N00000X
License number
017539 CT
Self-reported in NPPES; status is on the state search
Practice location
170 Mount Pleasant RD Ste 201, Newtown, CT 06470
Phone
(203) 792-4151
Enumerated
Jun 14, 2005
Record last updated
May 23, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(203) 792-4155
Medicaid ID
001175397 CT
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 170 Mount Pleasant RD Ste 201

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

  1. Beth Buscher, M.D.Dermatology Physician1427053776
  2. Kimberly Eickhorst, MDDermatology Physician1225258643
  3. Natalia GorodetskiyPhysician Assistant1811636293
  4. Jeffrey Knispel, M.D.Dermatology Physician1710983036
  5. Sree Kolli, MDDermatology Physician1649809427
  6. Caroline Larosa, M.D.Dermatology Physician1831519289

Verify Laurence A. Sibrack in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 017539
    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 Connecticut 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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98% fewer Medicare Part D claims than the average dermatology physician in 2024

19 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Laurence Sibrack19
  2. Specialty average797

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.

Laurence A. Sibrack among 253 dermatology physician records in Connecticut

Laurence A. Sibrack, M.D. is one of 253 dermatology physician records with a practice address in Connecticut. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 81% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2019 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 dermatology physician records list a practice address in Newtown

They are 7 of the 283 NPPES records with a practice address in Newtown, and 253 dermatology physician records in Connecticut.

The 8 dermatology physician records with the nearest ZIP codes

  1. Joel Brook, M.D.Newtown, CT 064701427306141
  2. Beth Buscher, M.D.Newtown, CT 064701427053776
  3. Kimberly Eickhorst, MDNewtown, CT 064701225258643
  4. Jeffrey Knispel, M.D.Newtown, CT 064701710983036
  5. Sree Kolli, MDNewtown, CT 064701649809427
  6. Caroline Larosa, M.D.Newtown, CT 064701831519289
  7. Jennifer Gray, MDOld Saybrook, CT 064751285644039
  8. Marcus McFerren, MD, PHDOrange, CT 064771891971651

Common questions

What is Laurence A. Sibrack, M.D.'s NPI number?

Laurence A. Sibrack, M.D.'s National Provider Identifier (NPI) is 1396740643, issued on Jun 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Laurence A. Sibrack, M.D. located?

The NPPES record lists a practice address at 170 Mount Pleasant RD Ste 201, Newtown, CT, 06470. Phone: (203) 792-4151. Providers update this record themselves, so call before visiting.

How can I verify Laurence A. Sibrack, M.D.'s license?

NPPES lists Connecticut license number 017539, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Laurence A. Sibrack, M.D. prescribe under Medicare Part D?

In 2024, Laurence A. Sibrack, M.D. had 19 Medicare Part D claims; the average among dermatology physician prescribers was 797. 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.