NPPES file of Aug 9, 2026

Sasha Waldstein

Hematology (Internal Medicine) Physician · Vancouver, WA

Sasha Waldstein is a hematology (internal medicine) physician with a practice address in Vancouver, Washington, and NPI 1053773051, issued on Mar 28, 2016. Check the license (Washington MD61244279, as entered in NPPES) on the Washington Medical Commission; 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
1053773051
Name
Sasha Waldstein
Primary taxonomy
Hematology (Internal Medicine) Physician 207RH0000X
License number
MD61244279 WA
Self-reported in NPPES; status is on the state search
Practice location
700 NE 87TH Ave Ste 360, Vancouver, WA 98664
Phone
(360) 896-7070
Enumerated
Mar 28, 2016
Record last updated
Dec 18, 2023
Medicare enrollment
Enrolled (PECOS I20221016000003); accepts Medicare assignment
Medical or professional school
University Of Rochester School Of Medicine And Dentistry, 2016
Telehealth
Offers telehealth (CMS)
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 700 NE 87TH Ave Ste 360

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

  1. Yadav Pandey, MDHematology & Oncology Physician1750811139

Verify Sasha Waldstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD61244279
    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 Washington license search

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2.3 times the Medicare Part D claims of the average hematology (internal medicine) physician in 2024

1,130 Medicare Part D claims for 213 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. 49 claims were for opioids.

  1. Sasha Waldstein1,130
  2. Specialty average496

Most prescribed

  1. Anastrozole220 claims
  2. Tamoxifen Citrate143 claims
  3. Eliquis78 claims
  4. Dexamethasone63 claims
  5. Prochlorperazine Maleate58 claims
  6. Letrozole53 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): 88.7 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.

  1. Qualityout of 100 · 30% of the final score91.5
  2. Costout of 100 · 30%70.7
  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, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Legacy Salmon Creek HospitalVancouver, WA

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

Sasha Waldstein among 34 hematology (internal medicine) physician records in Washington

Sasha Waldstein is one of 34 hematology (internal medicine) physician records with a practice address in Washington. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 91% of them.

  • NPI issued2016 · 91% of these records are older, 6% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2016 · median 1997 among the 21 with a school on file
  • Record last updated2023 · 79% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology (Internal Medicine) Physician providers in Washington

There are 34 hematology (internal medicine) physician records in Washington.

The 8 hematology (internal medicine) physician records with the nearest ZIP codes

  1. Robert Bigler, M.DVancouver, WA 986641689777583
  2. Farhana Malik, MDVancouver, WA 986641770733073
  3. Alexander Shar, MDLongview, WA 986321033280920
  4. Scott Parsons, DOSilverdale, WA 983831245601079
  5. Robert Raish, M.D.Bellingham, WA 982251689757775
  6. Chanudi Weerasinghe, M.D.Bellingham, WA 982251124469093
  7. Gabriela Ballester, M.D.Spokane Valley, WA 992161598967374
  8. Victor RostapshovSpokane Valley, WA 992161548315435

Common questions

What is Sasha Waldstein's NPI number?

Sasha Waldstein's National Provider Identifier (NPI) is 1053773051, issued on Mar 28, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Sasha Waldstein located?

The NPPES record lists a practice address at 700 NE 87TH Ave Ste 360, Vancouver, WA, 98664. Phone: (360) 896-7070. Providers update this record themselves, so call before visiting.

How can I verify Sasha Waldstein's license?

NPPES lists Washington license number MD61244279, 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 Sasha Waldstein prescribe under Medicare Part D?

In 2024, Sasha Waldstein had 1,130 Medicare Part D claims for 213 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.

What is Sasha Waldstein's MIPS final score?

The 2023 MIPS final score is 88.7 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.