NPPES file of Aug 9, 2026

Alan Chausow, MD

Pulmonary Disease Physician · Mountain View, CA

Alan Chausow, MD is a pulmonary disease physician with a practice address in Mountain View, California, and NPI 1801983457, issued on Oct 6, 2006. Check the license (California G52077, as entered in NPPES) on the Medical Board of California; 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
1801983457
Name
Alan Chausow
Credential
MD
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
G52077 CA
Self-reported in NPPES; status is on the state search
Practice location
701 E EL Camino Real, Mountain View, CA 94040
Phone
(650) 934-7144
Enumerated
Oct 6, 2006
Record last updated
Nov 30, 2011 (not updated in 15 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20080804000374); accepts Medicare assignment
Medical or professional school
Washington University School Of Medicine, 1976
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 701 E EL Camino Real

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

  1. Aya Abou-Nasr, MDAnesthesiology Physician1982191672
  2. Jaimie Abraham, AGPCNP-BCFamily Nurse Practitioner1245757699
  3. Brooke Abrantes, PA-CSurgical Physician Assistant1316771298
  4. Faud Abuabara, M.D.MOHS-Micrographic Surgery Physician1164472890
  5. Felix Adler, M.D.Diagnostic Radiology Physician1801069729
  6. Olga Afanasiev, MD, PHDDermatology Physician1669869384

Verify Alan Chausow in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G52077
    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 California license search

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87% fewer Medicare Part D claims than the average pulmonary disease physician in 2024

187 Medicare Part D claims for 56 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 72% of claims.

  1. Alan Chausow187
  2. Specialty average1,425

Most prescribed

  1. Breo Ellipta36 claims
  2. Trelegy Ellipta22 claims
  3. Azelastine Hcl15 claims
  4. Anoro Ellipta14 claims
  5. Stiolto Respimat13 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.

Industry payments in 2024: $124.73

1 payment: food and beverage; the largest payer was Mylan Specialty L.P. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alan Chausow$124.73
  2. Specialty average$5,159.88

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. Sutter Bay Medical FoundationLos Altos, CA

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

Alan Chausow among 1,443 pulmonary disease physician records in California

Alan Chausow, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 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 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 51% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1976 · median 2002 among the 1,061 with a school on file
  • Record last updated2011 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pulmonary Disease Physician providers in California

There are 1,443 pulmonary disease physician records in California.

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Estela Ayala Meyer, M.D.Mountain View, CA 940401063608719
  2. Bruce Beck, M.D.Mountain View, CA 940401316099732
  3. Ganesh Krishna, M.DMountain View, CA 940401407890742
  4. Gary LinMountain View, CA 940401811315534
  5. Apurva Marfatia, MDMountain View, CA 940401033290812
  6. Dakota McNierney, DOMountain View, CA 940401710506175
  7. Anne Pickersgill, M.D.Mountain View, CA 940401598802613
  8. David Sachs, MDMountain View, CA 940401992831168

Common questions

What is Alan Chausow, MD's NPI number?

Alan Chausow, MD's National Provider Identifier (NPI) is 1801983457, issued on Oct 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alan Chausow, MD located?

The NPPES record lists a practice address at 701 E EL Camino Real, Mountain View, CA, 94040. Phone: (650) 934-7144. Providers update this record themselves, so call before visiting.

How can I verify Alan Chausow, MD's license?

NPPES lists California license number G52077, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Alan Chausow, MD prescribe under Medicare Part D?

In 2024, Alan Chausow, MD had 187 Medicare Part D claims for 56 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.