NPPES file of Aug 9, 2026

Modern Weng, D.O.

Internal Medicine Physician · Mountain View, CA

Modern Weng, D.O. is an internal medicine physician with a practice address in Mountain View, California, and NPI 1407888944, issued on Jul 7, 2006. Check the license (California 20A10477, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1407888944
Name
Modern Weng
Credential
D.O.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
20A10477 CA
226739 MA
Self-reported in NPPES; status is on the state search
Practice location
1600 Amphitheatre Pkwy, Mountain View, CA 94043
Phone
(650) 227-1102
Enumerated
Jul 7, 2006
Record last updated
Jan 2, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(650) 227-1107
Medicare enrollment
Enrolled (PECOS I20081128000037); accepts Medicare assignment
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 1600 Amphitheatre Pkwy

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

  1. Jocelynn BonillaBehavior Technician1104794312
  2. Jason Hipp, MDAnatomic Pathology Physician1518270958
  3. Donna MarchettiMedical Physician Assistant1235445495
  4. Debra Sun, FNPFamily Nurse Practitioner1568727808
  5. Kelly Traver-Selling, MDGeneral Practice Physician1497974125

Verify Modern Weng in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A10477
    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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88% fewer Medicare Part D claims than the average internal medicine physician in 2024

390 Medicare Part D claims for 193 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Modern Weng390
  2. Specialty average3,176

Most prescribed

  1. Albuterol Sulfate Hfa40 claims
  2. Cephalexin18 claims
  3. Prednisone17 claims
  4. Hydrocortisone16 claims
  5. Arnuity Ellipta13 claims
  6. Fluticasone Propionate Hfa13 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): 80.6 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 score67.4
  2. Costout of 100 · 30%46.5
  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).

Industry payments in 2024: $48.69

1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Modern Weng$48.69
  2. Specialty average$1,303.06

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. County OF Santa ClaraSan Jose, CA

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

119 internal medicine physician records list a practice address in Mountain View

They are 119 of the 2,467 NPPES records with a practice address in Mountain View, and 17,696 internal medicine physician records in California.

Other internal medicine physician records in California

  1. Jacob Aaron, MDSan Francisco, CA1407202518
  2. Alistair Aaronson, MDStanford, CA1457628760
  3. Jose Abad., MDSacramento, CA1144607219
  4. Donna Abare, MDOakland, CA1386722155
  5. Marce AbareScotts Valley, CA1457744708
  6. Samuel Abarte, M.D.Chula Vista, CA1578535498
  7. Alexander Abary, MDLong Beach, CA1104995919
  8. Luba Abascal, MDSan Francisco, CA1023180874
  9. Michael Abate, MDSacramento, CA1548248131
  10. Wali Abawi, D.O.Joshua Tree, CA1104362268

Common questions

What is Modern Weng, D.O.'s NPI number?

Modern Weng, D.O.'s National Provider Identifier (NPI) is 1407888944, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Modern Weng, D.O. located?

The NPPES record lists a practice address at 1600 Amphitheatre Pkwy, Mountain View, CA, 94043. Phone: (650) 227-1102. Providers update this record themselves, so call before visiting.

How can I verify Modern Weng, D.O.'s license?

NPPES lists California license number 20A10477, 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 Modern Weng, D.O. prescribe under Medicare Part D?

In 2024, Modern Weng, D.O. had 390 Medicare Part D claims for 193 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Modern Weng, D.O.'s MIPS final score?

The 2023 MIPS final score is 80.6 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.