NPPES file of Aug 9, 2026

Chad Share Weldy, MD

Cardiovascular Disease Physician · Stanford, CA

Chad Share Weldy, MD is a cardiovascular disease physician with a practice address in Stanford, California, and NPI 1477084309, issued on Mar 22, 2017. Check the license (California A157175, 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
1477084309
Name
Chad Share Weldy
Credential
MD
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
A157175 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(650) 723-4000
Enumerated
Mar 22, 2017
Record last updated
Apr 26, 2024
Fax
(650) 498-6205
Medicare enrollment
Enrolled (PECOS I20230712001713); accepts Medicare assignment
Medical or professional school
Duke University School Of Medicine, 2017
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 300 Pasteur Dr

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

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Chad Share Weldy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A157175
    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

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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91% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024

278 Medicare Part D claims for 46 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.

  1. Chad Weldy278
  2. Specialty average3,078

Most prescribed

  1. Atorvastatin Calcium23 claims
  2. Metoprolol Succinate22 claims
  3. Eliquis20 claims
  4. Jardiance17 claims
  5. Camzyos16 claims
  6. Spironolactone16 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.

One hospital affiliation

  1. Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Chad Share Weldy among 2,574 cardiovascular disease physician records in California

Chad Share Weldy, MD is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 91% of them.

  • NPI issued2017 · 91% of these records are older, 7% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2017 · median 1999 among the 1,742 with a school on file
  • Record last updated2024 · 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 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

86 cardiovascular disease physician records list a practice address in Stanford

They are 86 of the 5,606 NPPES records with a practice address in Stanford, and 2,574 cardiovascular disease physician records in California.

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Euan Ashley, MDStanford, CA 943051497792204
  2. Timothy Devine, MDStanford, CA 943051316918634
  3. Karen Friday, MDStanford, CA 943051326067448
  4. Paul Heidenreich, MDStanford, CA 943051578573416
  5. Bob Hu, MDStanford, CA 943051376553891
  6. Lynette Lissin, MDStanford, CA 943051982615837
  7. Kenneth Mahaffey, MDStanford, CA 943051659455707
  8. David Maron, MDStanford, CA 943051538251962

Common questions

What is Chad Share Weldy, MD's NPI number?

Chad Share Weldy, MD's National Provider Identifier (NPI) is 1477084309, issued on Mar 22, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Chad Share Weldy, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Chad Share Weldy, MD's license?

NPPES lists California license number A157175, 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 Chad Share Weldy, MD prescribe under Medicare Part D?

In 2024, Chad Share Weldy, MD had 278 Medicare Part D claims for 46 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.