Nagasamudra Shamarao Ashok, M.D.
Internal Medicine Physician · San Jacinto, CA
Nagasamudra Shamarao Ashok, M.D. is an internal medicine physician with a practice address in San Jacinto, California, and NPI 1821036229, issued on Jun 4, 2006. Check the license (California A41589, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nagasamudra Shamarao Ashok
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A41589 CA
Self-reported in NPPES; status is on the state search - Practice location
- 229 W 7TH St, San Jacinto, CA 92583
- Phone
- (951) 487-2550
- Enumerated
- Jun 4, 2006
- Record last updated
- Mar 13, 2025
- Medicaid ID
- 00A415890 CA
- Medicare enrollment
- Enrolled (PECOS I20040917001124); accepts 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 →
Also registered at 229 W 7TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara Barnes, M.S, P.A.-C.Physician Assistant1518180702
- Neil Katchman, D.O.Internal Medicine Physician1053366047
- Emmanuel Ogbodo, MBA,, PA-CMedical Physician Assistant1326276353
- Adaeze OkohFamily Nurse Practitioner1902676125
Verify Nagasamudra Shamarao Ashok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A41589Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.8 times the Medicare Part D claims of the average internal medicine physician in 2024
24,636 Medicare Part D claims for 761 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 645 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,245 claims
- Amlodipine Besylate885 claims
- Gabapentin710 claims
- Metformin Hcl626 claims
- Pantoprazole Sodium615 claims
- Levothyroxine Sodium607 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: $154.41
6 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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 4 group practices
- Doctors Managed Emergency Medical Group IncGlendale, CA
- Nagasamudra S Ashok MD IncSan Jacinto, CA
- New Ananda Medical And Urgent Care, Inc.El Monte, CA
- Upland-Ontario Medical Clinic IncOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nagasamudra Shamarao Ashok among 17,696 internal medicine physician records in California
Nagasamudra Shamarao Ashok, 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
- Graduated1969 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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 San Jacinto → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vidyamohan BaluSan Jacinto, CA 925831265815880
- Lwin Htun, M.D.San Jacinto, CA 925831881884609
- Neil Katchman, D.O.San Jacinto, CA 925831053366047
- Alma Bathan-Gerona, MDRomoland, CA 925851649434101
- Sasank Nakka, MDMenifee, CA 925851902334295
- Duane Darnell, DOSun City, CA 925861831199728
- Edivina Gonzales, M.D.Sun City, CA 925861386670479
- Patrick Gonzales, M.D.Sun City, CA 925861194751289
Common questions
What is Nagasamudra Shamarao Ashok, M.D.'s NPI number?
Nagasamudra Shamarao Ashok, M.D.'s National Provider Identifier (NPI) is 1821036229, issued on Jun 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nagasamudra Shamarao Ashok, M.D. located?
The NPPES record lists a practice address at 229 W 7TH St, San Jacinto, CA, 92583. Phone: (951) 487-2550. Providers update this record themselves, so call before visiting.
How can I verify Nagasamudra Shamarao Ashok, M.D.'s license?
NPPES lists California license number A41589, 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 Nagasamudra Shamarao Ashok, M.D. prescribe under Medicare Part D?
In 2024, Nagasamudra Shamarao Ashok, M.D. had 24,636 Medicare Part D claims for 761 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.