Laurence M. Brostoff, M.D.
Internal Medicine Physician · Silverdale, WA
Laurence M. Brostoff, M.D. is an internal medicine physician with a practice address in Silverdale, Washington, and NPI 1255498507, issued on Jan 3, 2007. Check the license (Washington MD00029903, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Laurence M. Brostoff
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD00029903 WA
G61694 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10452 Silverdale Way NW, Silverdale, WA 98383
- Phone
- (360) 307-7300
- Enumerated
- Jan 3, 2007
- Record last updated
- May 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 8143935 WA
- Medicare enrollment
- Enrolled (PECOS I20090218000171); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 10452 Silverdale Way NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Carrielyn Bays, P.A.Physician Assistant1699828376
- Joe Bennett, MDEmergency Medicine Physician1053769893
- Anne Blankenheim, PA-CMedical Physician Assistant1699087866
- Janet Boltwood, LICSWClinical Social Worker1306238431
Verify Laurence M. Brostoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00029903Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
51 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF WashingtonSilverdale, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Laurence M. Brostoff among 3,079 internal medicine physician records in Washington
Laurence M. Brostoff, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1987 · median 2006 among the 1,852 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 internal medicine physician records list a practice address in Silverdale
They are 16 of the 1,305 NPPES records with a practice address in Silverdale, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Silverdale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marissa Anderson-Chernishof, M.D., M.S.Silverdale, WA 983831235549957
- Peter Barkett, M.D.Silverdale, WA 983831891086252
- Ana Marie Digao, MDSilverdale, WA 983831871783860
- Sara GirSilverdale, WA 983831184251050
- William Hall, M.D.Silverdale, WA 983831134199961
- Amado Katigbak, M.D.Silverdale, WA 983831538227939
- Cassedy Mahrer Owen, D.O.Silverdale, WA 983831053775742
- Joel Martin, M.D.Silverdale, WA 983831629093521
Common questions
What is Laurence M. Brostoff, M.D.'s NPI number?
Laurence M. Brostoff, M.D.'s National Provider Identifier (NPI) is 1255498507, issued on Jan 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Laurence M. Brostoff, M.D. located?
The NPPES record lists a practice address at 10452 Silverdale Way NW, Silverdale, WA, 98383. Phone: (360) 307-7300. Providers update this record themselves, so call before visiting.
How can I verify Laurence M. Brostoff, M.D.'s license?
NPPES lists Washington license number MD00029903, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Laurence M. Brostoff, M.D. prescribe under Medicare Part D?
In 2024, Laurence M. Brostoff, M.D. had 51 Medicare Part D claims for 22 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.