Patrick Michael Yaffee, M.D.
Internal Medicine Physician · Calabasas, CA
Patrick Michael Yaffee, M.D. is an internal medicine physician with a practice address in Calabasas, California, and NPI 1144587676, issued on Apr 22, 2012. Check the license (California A130871, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Patrick Michael Yaffee
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A130871 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26585 Agoura RD Ste 330, Calabasas, CA 91302
- Phone
- (818) 876-1050
- Enumerated
- Apr 22, 2012
- Record last updated
- Dec 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (818) 876-1026
- Medicare enrollment
- Enrolled (PECOS I20150917002096); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2012
- 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 26585 Agoura RD Ste 330
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Luz Delportillo, M.D.Internal Medicine Physician1760554026
- Keith Garb, M.D.Internal Medicine Physician1740381177
- Maribel GonzalezMarriage & Family Therapist1790160042
- Dana HongSports Medicine (Family Medicine) Physician1982276341
- Anthony Jang, MDPsychiatry Physician1114507787
Verify Patrick Michael Yaffee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A130871Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,266 Medicare Part D claims for 329 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 84 claims were for opioids.
Most prescribed
- Atorvastatin Calcium184 claims
- Rosuvastatin Calcium93 claims
- Amlodipine Besylate88 claims
- Levothyroxine Sodium87 claims
- Losartan Potassium77 claims
- Zolpidem Tartrate75 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.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Patrick Michael Yaffee among 17,696 internal medicine physician records in California
Patrick Michael Yaffee, 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 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).
15 internal medicine physician records list a practice address in Calabasas
They are 15 of the 786 NPPES records with a practice address in Calabasas, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Calabasas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Samuel BursteinCalabasas, CA 913021124037155
- Sagi Cohen, M.D.Calabasas, CA 913021679872311
- Luz Delportillo, M.D.Calabasas, CA 913021760554026
- Sayeh Eshraghi, MDCalabasas, CA 913021750533345
- Keith Garb, M.D.Calabasas, CA 913021740381177
- Wayne Imber, M.D.Calabasas, CA 913021003244518
- Richard Lander, M.D.Calabasas, CA 913021639242241
- Sean Leoni, M.D.Calabasas, CA 913021669544052
Common questions
What is Patrick Michael Yaffee, M.D.'s NPI number?
Patrick Michael Yaffee, M.D.'s National Provider Identifier (NPI) is 1144587676, issued on Apr 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Patrick Michael Yaffee, M.D. located?
The NPPES record lists a practice address at 26585 Agoura RD Ste 330, Calabasas, CA, 91302. Phone: (818) 876-1050. Providers update this record themselves, so call before visiting.
How can I verify Patrick Michael Yaffee, M.D.'s license?
NPPES lists California license number A130871, 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 Patrick Michael Yaffee, M.D. prescribe under Medicare Part D?
In 2024, Patrick Michael Yaffee, M.D. had 2,266 Medicare Part D claims for 329 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.