Katherine J. Ludington, M.D.
Cardiovascular Disease Physician · Encinitas, CA
Katherine J. Ludington, M.D. is a cardiovascular disease physician with a practice address in Encinitas, California, and NPI 1164420469, issued on Jul 11, 2005. Check the license (California A66026, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine J. Ludington
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A66026 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4401 Manchester Ave, Encinitas, CA 92024
- Phone
- (760) 753-0220
- Enumerated
- Jul 11, 2005
- Record last updated
- Feb 22, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070515000610); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 4401 Manchester Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine J. Ludington in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66026Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average cardiovascular disease physician in 2024
3,772 Medicare Part D claims for 586 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium535 claims
- Metoprolol Succinate361 claims
- Eliquis245 claims
- Amlodipine Besylate221 claims
- Valsartan-Hydrochlorothiazide122 claims
- Valsartan110 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 MIPS final score for 2023 (Medicare payment program): 77.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,533.32
42 payments; by number, the most common kind was food and beverage; the largest payer was Impulse Dynamics (USA) Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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.
Bills Medicare through one group practice
- North Coast Cardiology IncOceanside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine J. Ludington among 2,574 cardiovascular disease physician records in California
Katherine J. Ludington, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1997 · median 1999 among the 1,742 with a school on file
- Record last updated2008 · 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).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Encinitas → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Riaz Ahmed, M.D.Encinitas, CA 920241376593871
- Roy Avalos, M.D.Encinitas, CA 920241154399632
- Maurice Buchbinder, M.D.Encinitas, CA 920241851369813
- Brian Carlos, MDEncinitas, CA 920241730127515
- Martin Charlat, M.D.Encinitas, CA 920241790753770
- Pingfeng Du, M.D.Encinitas, CA 920241285694349
- Marc Effron, M.D.Encinitas, CA 920241346218278
- David Hill, M.D.Encinitas, CA 920241215905872
Common questions
What is Katherine J. Ludington, M.D.'s NPI number?
Katherine J. Ludington, M.D.'s National Provider Identifier (NPI) is 1164420469, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Katherine J. Ludington, M.D. located?
The NPPES record lists a practice address at 4401 Manchester Ave, Encinitas, CA, 92024. Phone: (760) 753-0220. Providers update this record themselves, so call before visiting.
How can I verify Katherine J. Ludington, M.D.'s license?
NPPES lists California license number A66026, 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 Katherine J. Ludington, M.D. prescribe under Medicare Part D?
In 2024, Katherine J. Ludington, M.D. had 3,772 Medicare Part D claims for 586 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Katherine J. Ludington, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.7 of 100. 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.