Ram Kumar Subramanyan, MD, PHD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Los Angeles, CA
Ram Kumar Subramanyan, MD, PHD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Los Angeles, California, and NPI 1164624615, issued on Jun 5, 2007. Check the license (California A81911, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ram Kumar Subramanyan
- Credential
- MD, PHD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- A81911 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4650 W Sunset Blvd # MS 66, Los Angeles, CA 90027
- Phone
- (323) 361-5595
- Enumerated
- Jun 5, 2007
- Record last updated
- Nov 27, 2023
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 634 in California → Look up another NPI →
Also registered at 4650 W Sunset Blvd # MS 66
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Cleveland, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1952725764
- Luke Wiggins, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1124443122
Verify Ram Kumar Subramanyan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $884.00
4 payments; by number, the most common kind was food and beverage; the largest payer was Endo USA, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 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.
Ram Kumar Subramanyan among 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California
Ram Kumar Subramanyan, MD, PHD is one of 634 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in California
There are 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California.
All 634 in California → Every provider in Los Angeles → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Michael Chang, MD, MPHLos Angeles, CA 900271881681914
- Raymond Chen, MDLos Angeles, CA 900271750458634
- Cynthia Herrington, M.D.Los Angeles, CA 900271770517245
- Manly Hyde, MDLos Angeles, CA 900271841359437
- Kristopher Kallin, MDLos Angeles, CA 900271609943539
- Gary Kochamba, MDLos Angeles, CA 900271326163833
- Thomas Pfeffer, MDLos Angeles, CA 900271073684049
- Srinivas Sarma, MDLos Angeles, CA 900271801967880
Common questions
What is Ram Kumar Subramanyan, MD, PHD's NPI number?
Ram Kumar Subramanyan, MD, PHD's National Provider Identifier (NPI) is 1164624615, issued on Jun 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ram Kumar Subramanyan, MD, PHD located?
The NPPES record lists a practice address at 4650 W Sunset Blvd # MS 66, Los Angeles, CA, 90027. Phone: (323) 361-5595. Providers update this record themselves, so call before visiting.
How can I verify Ram Kumar Subramanyan, MD, PHD's license?
NPPES lists California license number A81911, 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.
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.