NPPES file of Aug 9, 2026

David N. Lowther, MD

Radiation Oncology Physician · Modesto, CA

David N. Lowther, MD is a radiation oncology physician with a practice address in Modesto, California, and NPI 1902880818, issued on Dec 5, 2005. Check the license (California A79089, 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
1902880818
Name
David N. Lowther
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
A79089 CA
Self-reported in NPPES; status is on the state search
Practice location
1316 Nelson Ave, Modesto, CA 95350
Phone
(209) 575-5870
Enumerated
Dec 5, 2005
Record last updated
Jan 30, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(209) 575-5872
Medicaid IDs
1902880818 CA
00A790890 CA
Medicare enrollment
Enrolled (PECOS I20110609000038); accepts Medicare assignment
Medical or professional school
Georgetown University School Of Medicine, 1998
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 1316 Nelson Ave

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

  1. Heidi Yee, N.P.Family Nurse Practitioner1376586362
  2. Yu Zhang, PHDSpecialist1487795241

Verify David N. Lowther in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A79089
    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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54% fewer Medicare Part D claims than the average radiation oncology physician in 2024

62 Medicare Part D claims for 33 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. David Lowther62
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl24 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: $15.84

1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Lowther$15.84
  2. Specialty average$1,897.85

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. Inspira Health Network Medical Group PCPittsgrove, NJ

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

David N. Lowther among 735 radiation oncology physician records in California

David N. Lowther, MD is one of 735 radiation oncology 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 84% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1998 · median 2005 among the 545 with a school on file
  • Record last updated2017 · 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 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in California

There are 735 radiation oncology physician records in California.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Alireza Mahmoudieh, MDMerced, CA 953481720166309
  2. Jorge Garcia-Young, M.D.Modesto, CA 953551902860802
  3. Eric Ku, MDModesto, CA 953551013478999
  4. Quoc Luu, M.D.Modesto, CA 953551689692808
  5. Christopher Neville, M.D.Modesto, CA 953551790743136
  6. Pericles Ioannides, M.D.Sonora, CA 953701386007367
  7. Haocheng Cai, DO, PHDTurlock, CA 953821548882632
  8. Frederick David, M.D.Santa Rosa, CA 954031982793808

Common questions

What is David N. Lowther, MD's NPI number?

David N. Lowther, MD's National Provider Identifier (NPI) is 1902880818, issued on Dec 5, 2005. An NPI identifies a provider in billing; it is not a license.

Where is David N. Lowther, MD located?

The NPPES record lists a practice address at 1316 Nelson Ave, Modesto, CA, 95350. Phone: (209) 575-5870. Providers update this record themselves, so call before visiting.

How can I verify David N. Lowther, MD's license?

NPPES lists California license number A79089, 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 David N. Lowther, MD prescribe under Medicare Part D?

In 2024, David N. Lowther, MD had 62 Medicare Part D claims for 33 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.