Ellen Kathleen McDonald, M.D.
Internal Medicine Physician · Pasadena, CA
Ellen Kathleen McDonald, M.D. is an internal medicine physician with a practice address in Pasadena, California, and NPI 1679751408, issued on Feb 4, 2008. Check the license (California A102543, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ellen Kathleen McDonald
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A102543 CA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Fairmount Ave, Pasadena, CA 91105
- Phone
- (626) 872-4195
- Enumerated
- Feb 4, 2008
- Record last updated
- Nov 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (626) 628-1836
- Medicare enrollment
- Enrolled (PECOS I20090611000574); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 800 Fairmount Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Magdalena Arenas, MDPulmonary Disease Physician1093761249
- Ruby Batin, M.D.Pediatrics Physician1023186418
- Jennifer Cohen, M.D.Pediatrics Physician1730247172
- Anthony Culotta, MDRetina Specialist (Ophthalmology) Physician1497790018
- Janice Davolio, M.D.Dermatology Physician1972527521
- William Dietrick, MDSpecialist1881712248
Verify Ellen Kathleen McDonald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A102543Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,272 Medicare Part D claims for 172 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium193 claims
- Levothyroxine Sodium106 claims
- Escitalopram Oxalate99 claims
- Rosuvastatin Calcium90 claims
- Zolpidem Tartrate85 claims
- Amlodipine Besylate70 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: $24.75
1 payment: food and beverage; the largest payer was Pfizer Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ellen Kathleen McDonald among 17,696 internal medicine physician records in California
Ellen Kathleen McDonald, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 11,065 with a school on file
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
137 internal medicine physician records list a practice address in Pasadena
They are 137 of the 10,525 NPPES records with a practice address in Pasadena, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Pasadena → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dolores Barba, MDPasadena, CA 911051992700603
- Barry Blum, MDPasadena, CA 911051639141716
- Betsy Felser, MDPasadena, CA 911051144292897
- Todd Hee, M.D.Pasadena, CA 911051689648693
- Wei Huang-Lee, MDPasadena, CA 911051972576841
- George Jung, MDPasadena, CA 911051720051881
- Kristin Karlyn, MDPasadena, CA 911051033182530
- Malathi Narayan, MDPasadena, CA 911051588637466
Common questions
What is Ellen Kathleen McDonald, M.D.'s NPI number?
Ellen Kathleen McDonald, M.D.'s National Provider Identifier (NPI) is 1679751408, issued on Feb 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Kathleen McDonald, M.D. located?
The NPPES record lists a practice address at 800 Fairmount Ave, Pasadena, CA, 91105. Phone: (626) 872-4195. Providers update this record themselves, so call before visiting.
How can I verify Ellen Kathleen McDonald, M.D.'s license?
NPPES lists California license number A102543, 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 Ellen Kathleen McDonald, M.D. prescribe under Medicare Part D?
In 2024, Ellen Kathleen McDonald, M.D. had 2,272 Medicare Part D claims for 172 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.