Isaac J. Adatto, M.D.
Internal Medicine Physician · Encino, CA
Isaac J. Adatto, M.D. is an internal medicine physician with a practice address in Encino, California, and NPI 1437263845, issued on Aug 19, 2006. Check the license (California A60245, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Isaac J. Adatto
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A60245 CA
Self-reported in NPPES; status is on the state search - Practice location
- 16030 Ventura Blvd, Encino, CA 91436
- Phone
- (818) 990-1067
- Enumerated
- Aug 19, 2006
- Record last updated
- Apr 16, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (818) 981-1217
- Medicare enrollment
- Enrolled (PECOS I20100608000800); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1994
- 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 16030 Ventura Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Isaac J. Adatto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A60245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% more Medicare Part D claims than the average internal medicine physician in 2024
6,243 Medicare Part D claims for 475 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 49 claims were for opioids.
Most prescribed
- Atorvastatin Calcium560 claims
- Levothyroxine Sodium263 claims
- Amlodipine Besylate260 claims
- Rosuvastatin Calcium222 claims
- Trazodone Hcl220 claims
- Escitalopram Oxalate148 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): 85.7 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $25.81
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Bills Medicare through one group practice
- Cedars-Sinai Medical Care FoundationEncino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isaac J. Adatto among 17,696 internal medicine physician records in California
Isaac J. Adatto, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2018 · 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).
44 internal medicine physician records list a practice address in Encino
They are 44 of the 3,136 NPPES records with a practice address in Encino, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Encino → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Esfandiar Esfandiarifard, MDEncino, CA 914361063514479
- Darius Gharib, M.D.Encino, CA 914361013929918
- Jasmin Javaherian, D.OEncino, CA 914361447294715
- David Kayne, M.D.Encino, CA 914361144334533
- Melvin Khaw, M.D.Encino, CA 914361487624045
- Allan Klass, M DEncino, CA 914361346261039
- Ulf Lando, MDEncino, CA 914361487769063
- Melvin Monsher, M.D.Encino, CA 914361306860416
Common questions
What is Isaac J. Adatto, M.D.'s NPI number?
Isaac J. Adatto, M.D.'s National Provider Identifier (NPI) is 1437263845, issued on Aug 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Isaac J. Adatto, M.D. located?
The NPPES record lists a practice address at 16030 Ventura Blvd, Encino, CA, 91436. Phone: (818) 990-1067. Providers update this record themselves, so call before visiting.
How can I verify Isaac J. Adatto, M.D.'s license?
NPPES lists California license number A60245, 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 Isaac J. Adatto, M.D. prescribe under Medicare Part D?
In 2024, Isaac J. Adatto, M.D. had 6,243 Medicare Part D claims for 475 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Isaac J. Adatto, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 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.