Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Prem Narayan Ramkumar, MD, MBA

Individual provider Orthopaedic Surgery Physician · NPI 1255794889

Dr. Prem Narayan Ramkumar, MD, MBA practises Orthopedic Surgery in Downey, California. Graduated from Baylor College of Medicine in 2016, 10 years ago. Practices with Commons Clinic Medical Group, PC, a 22-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
10
Trained at
Baylor College of Medicine
Licensed in
CA
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MBA — Master of Business Administration
A graduate business degree.

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Practice location Address checks out

5750 Downey Ave Ste 308
Downey, CA 90712-1482
Phone: (562) 633-3787
Fax: (562) 633-1977
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3828 Schaufele Ave Ste 320, Long Beach, CA 90808-1793 — (562) 348-4588

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence A180372 (CA)

Record details

NPI number1255794889
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MBA
Sole proprietorYes
NPI enumeratedMarch 31, 2016
Last updated in NPPESAugust 28, 2025
Certification dateAugust 28, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Commons Clinic Medical Group, Pc — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hip replacement 20 times · 66th percentile
Knee replacement 15 times · 45th percentile
Lower limb (leg) arthroscopy (minimally invasive joint repair) 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients169
Services billed 900 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $15,200 6 payments
Food and Beverage $2,073 38 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $1,883 9 payments · travel or lodging paid or reimbursed, such as to attend a conference
Entertainment $19 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Commons Clinic Medical Group, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 22 clinicians in the practice; 12 are shown here.

Other providers in Downey