Suma Oommen, M.D.
Internal Medicine Physician · Lake Forest, CA
Suma Oommen, M.D. is an internal medicine physician with a practice address in Lake Forest, California, and NPI 1063431203, issued on Jul 19, 2006. Check the license (California A75861, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Suma Oommen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A75861 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24432 Muirlands Blvd Ste 219, Lake Forest, CA 92630
- Phone
- (949) 852-9038
- Enumerated
- Jul 19, 2006
- Record last updated
- Jan 13, 2023
- Medicaid ID
- 00A758610 CA
- Medicare enrollment
- Enrolled (PECOS I20080513000695); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Suma Oommen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A75861Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
224 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium18 claims
- Clonazepam14 claims
- Lisinopril14 claims
- Rosuvastatin Calcium14 claims
- Sumatriptan Succinate11 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.
Suma Oommen among 17,696 internal medicine physician records in California
Suma Oommen, 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
- Graduated1991 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Lake Forest → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sahar Lashin, M.D.Lake Forest, CA 926301598053894
- Madineth Muy, M.D.Lake Forest, CA 926301992807721
- Nicole Sandler, NPLake Forest, CA 926301346933165
- Usha Idnani, M.D.Dana Point, CA 926291861446056
- Rajiv Pathak, M.D.Dana Point, CA 926291265528111
- Laurence Wellikson, M.D.Dana Point, CA 926291770858649
- Adnan Akhtar, D.O.Costa Mesa, CA 926271215126396
- Matthew Boone, MDCosta Mesa, CA 926271487685095
Common questions
What is Suma Oommen, M.D.'s NPI number?
Suma Oommen, M.D.'s National Provider Identifier (NPI) is 1063431203, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Suma Oommen, M.D. located?
The NPPES record lists a practice address at 24432 Muirlands Blvd Ste 219, Lake Forest, CA, 92630. Phone: (949) 852-9038. Providers update this record themselves, so call before visiting.
How can I verify Suma Oommen, M.D.'s license?
NPPES lists California license number A75861, 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 Suma Oommen, M.D. prescribe under Medicare Part D?
In 2024, Suma Oommen, M.D. had 224 Medicare Part D claims for 22 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.