October 25, 2019

Andrew Jackson
Chief Financial Officer
Ra Medical Systems, Inc.
2070 Las Palmas Drive
Carlsbad, CA 92011

       Re: Ra Medical Systems, Inc.
           Form 10-K For the Fiscal Year Ended December 31, 2018
           Filed March 15, 2019
           Form 8-K filed August 12, 2019
           File No. 001-38677

Dear Mr. Jackson:

        We have reviewed your October 8, 2019 response to our comment letter
and have the
following comment. In our comment, we may ask you to provide us with
information so we may
better understand your disclosure.

       Please respond to this comment within ten business days by providing the
requested
information or advise us as soon as possible when you will respond. If you do
not believe our
comment applies to your facts and circumstances, please tell us why in your
response.

      After reviewing your response to this comment, we may have additional
comments. Unless we note otherwise, our references to prior comments are to
comments in our
September 24, 2019 letter.

Form 8-K filed August 12, 2019

Exhibit 99.1
Manufacturing Update

1.    We note your response to prior comment 3. Please confirm you will revise
future filings to
      expand your disclosure and provide a robust and comprehensive discussion
of the issues
      you encountered in the catheter manufacturing process and your policies
for testing and
      impairing catheters during the production process consistent with your
response to our
      comment.
 Andrew Jackson
Ra Medical Systems, Inc.
October 25, 2019
Page 2

        Please contact Eric Atallah at (202) 551-3663 or Kevin Kuhar,
Accounting Branch Chief,
at (202) 551-3662 with any questions.



FirstName LastNameAndrew Jackson                          Sincerely,
Comapany NameRa Medical Systems, Inc.
                                                          Division of
Corporation Finance
October 25, 2019 Page 2                                   Office of Life
Sciences
FirstName LastName